最新刊期
- 摘要：The Knoevenagel condensation of aldehydes or ketones with active methylene compounds represents a classic method for carbon-carbon double bond formation in organic synthesis and has wide applications in the synthesis of fine chemicals, natural products, dyes, and polymeric materials. Notably, this reaction proceeds efficiently not only in conventional organic solvents but also in aqueous media in the presence or absence of catalysts. Benefiting from the mild and efficient characteristics, this reaction has recently been explored as a powerful platform for constructing novel polymeric materials. Emerging evidence indicates that the resultant C＝C bonds exhibit significant dynamic behavior in both aqueous and organic phases, enabling their application in the fabrication of injectable and self-healing dynamic hydrogels as well as dynamic vitrimers. Consequently, the Knoevenagel condensation has emerged as a promising chemical tool in the field of dynamic polymer synthesis. In this review, we systematically summarized recent advances in the design and construction strategies of dynamic polymeric materials based on the Knoevenagel condensation, with a particular focus on their applications in biomedicine, recyclable materials, and biomass-derived green materials. Moreover, the current challenges and future application potential of this kind of materials were also discussed and prospected.关键词：Knoevenagel condensation;Dynamic covalent bonds;Dynamic polymeric materials;Hydrogels;Vitrimer15|0|0更新时间：2026-08-07
- 摘要：To improve silica dispersion in a non-polar SBR/BR matrix and enhance composite performance, a polysiloxane-polybutadiene copolymer (TESIPB) with triethoxysilane end groups was designed and synthesized as an interface modifier for silica-filled SBR/BR composites. The effects of the copolymer on vulcanization, filler dispersion, mechanical and dynamic properties were systematically investigated by adjusting its siloxane end groups, benzene ring content, and liquid butadiene molecular weight. Results showed that TESIPB effectively inhibited silica agglomeration, promoted uniform filler dispersion, and significantly improved tear strength and elongation at break. With 2.5 parts of TESIPB, the composite achieved a tensile strength of 22.73 MPa, elongation at break of 1444%, and tear strength of 75.5 N/mm. Dynamic mechanical analysis indicated that an appropriate amount of TESIPB reduced tanδ at 60 ℃ while increasing tanδ near 0 ℃, enabling a balance between low rolling resistance and good wet-skid resistance. This work offers a new strategy for high-performance green tire rubber composites.关键词：Silicone-terminated polybutadiene rubber;Silica;Styrene butadiene rubber;Liquid rubber;Polysiloxane5|0|0更新时间：2026-08-06
- 摘要：Owing to the tissue-like mechanical properties and environmental responsiveness, hydrogels exhibit great potential in diverse fields, including aerospace, biomedicine, and flexible electronics. Their surfaces are the regions interacted with other objects during utilizations, which are essential to the realization of functions. However, conventional homogeneous hydrogels are hard to meet precise requirements of surface characteristics in complex scenarios, limiting the expansion of their applications. To address this, recent studies have focused on patterning the surface properties of hydrogels, such as wettability, adhesion, and optical properties. Many strategies are developed enabled by different chemical or physical procedures, thus meeting the differential demands of scenarios. This review focuses on patterning of hydrogel surface properties, summarizing recent achievements in this field. Furthermore, it provides a perspective about the latest opportunities and challenges according to our research. Especially, we emphasize the approach and merits of patterning hydrogel surfaces via photochemistry to give valuable references for future works.关键词：Hydrogels;Surface properties;Patterning;Stimuli-response;Functionalities168|18|0更新时间：2026-08-04
- 摘要：This study focuses on the preparation and property investigation of thermoplastic polyurethane/multi-walled carbon nanotube/ferroferric oxide (TPU/MWCNT/Fe3O4) composites. Aiming at the problems of uneven dispersion and easy agglomeration of MWCNTs in the traditional twin-screw melt blending process, TPU/MWCNT was synthesized by solution-based in situ polymerization, and then TPU/MWCNT/Fe3O4 composites with different Fe3O4 loadings (10 wt%, 20 wt%, 30 wt% and 40 wt%) were prepared via twin-screw melt blending. The effects of the filler content on the aggregate structure, micromorphology, thermal properties, and electromagnetic wave absorption performance of the composites were systematically studied. The results showed that Fe3O4 and MWCNTs were well dispersed in the TPU matrix without obvious agglomeration. The glass transition temperature (Tg) of the composites increased slightly with increasing Fe3O4 content. Specifically, the Tg of TPU-M6F40 reached -29.61 ℃, which is 4.66 ℃ higher than that of TPU/M6. In addition, the introduction of Fe3O4 effectively regulates the complex permittivity and complex permeability of the composites, thereby optimizing their impedance-matching characteristics and introducing a magnetic loss mechanism. The composites achieved full absorption in the X band, with a minimum reflection loss of -34.49 dB. This work provides a new design concept for flexible absorbing materials and has broad application prospects in fields such as wearable electromagnetic protection, shielding of flexible electronic devices, and stealth coatings.关键词：Thermoplastic polyurethane;Multi-walled carbon nanotubes;Trioxide iron;Electromagnetic absorbing material149|23|0更新时间：2026-08-04
- 摘要：The interfacial instability of high-voltage layered lithium nickel-cobalt-manganese oxide cathode materials, characterized by excessive electrolyte decomposition, transition metal dissolution, and cation mixing, severely limits their cycle life. In this work, an acrylate copolymer (PMHC) containing both hydroxyl and cyano groups was designed and synthesized. This copolymer coated the surface of LiNi0.6Co0.2Mn0.2O2 (NCM622) particles during the cathode slurry preparation process and undergoes in situ cross-linking via the Ritter reaction, forming a stable polymer interface layer to enhance cathode performance. Density functional theory (DFT) calculations revealed that the binding energy between the cyano group and the NCM622 (-1 0 0) crystal plane (-24.35 eV) was much higher than that of the fluorine-containing group in PVDF (-14.62 eV), facilitating preferential adsorption and coating of the polymer. Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS) studies indicated that PMHC polymer undergoes cross-linking in the presence of Lewis acid. Transmission electron microscopy (TEM) confirmed the successful coating of the cross-linked PMHC polymer on the NCM622 surface. Cyclic voltammetry (CV) tests demonstrated that the coating layer significantly reduced polarization and increased the apparent diffusion coefficient of Li+. Battery test results showed that the coating layer contributed to the structure stability of the cathode material. The PMHC@NCM cell exhibited a very high specific discharge capacity (146.7 mAh·g-1) and Coulombic efficiency (99.78%) after 400 cycles at 0.5 C. XPS analysis further revealed that the cross-linked polymer coating participates in the formation of the cathode electrolyte interface (CEI) layer, and this polymer-derived CEI effectively suppressed cation mixing, transition metal dissolution, and electrolyte decomposition. This work presents a new strategy for stabilizing high-voltage cathode material interfaces through polymer coating followed by in situ cross-linking, offering a novel approach to improve the cycle life of high energy-density lithium-ion batteries.关键词：Cathode coating;In situ cross-linking;Ritter reaction;NCM622;Lithium-ion battery222|21|0更新时间：2026-08-04
- 摘要：The effects of alkali metal ions (Li+, Na+, K+), initiator concentration and ionic comonomers on particle coalescence and surface charge construction were investigated in soap-free emulsion polymerization using acrylonitrile (AN) and methyl acrylate (MA) as monomers and ammonium persulfate as the initiator. The morphology, particle size distribution, zeta potential, and crystallinity of the resulting P(AN-co-MA) particles were characterized by scanning electron microscopy, dynamic light scattering, and X-ray diffraction. The experimental results demonstrated that alkali metal ions reduced the stability of the P(AN-co-MA) particles. By virtue of their hydration properties, these ions compressed the electric double layer and weakened the electrostatic repulsion between particles, thereby inducing particle coalescence. Increasing the initiator concentration effectively raised the surface charge density of the particles, thus suppressing coalescence. The mechanism of surface charge formation on P(AN-co-MA) particles was modulated by ionic comonomers, which in turn affected particle stability. This study elucidates the regulatory role of alkali metal ions in the preparation of monodisperse P(AN-co-MA) particles via soap-free emulsion polymerization.关键词：Soap-free emulsion polymerization;Alkali metal ions;Acrylonitrile;Methyl acrylate50|6|0更新时间：2026-08-04
- 摘要：In response to increasingly stringent regulations on per- and polyfluoroalkyl substances (PFAS) and the demand for halogen-free thin-wall flame-retardant polycarbonate (PC) with low heat and smoke release, a naphthalimide-functionalized polysiloxane (PSNI) was designed and synthesized. PSNI was synergistically combined with kaolin to prepare a series of PC/PSNI/kaolin composites, and the effects of the compounding ratios on thermal stability, flame retardancy, and mechanical properties were systematically investigated. The results demonstrated that PSNI and kaolin exhibited a pronounced synergistic flame retardant effect. At a total loading of 10 wt% with a mass ratio of 1:1, the limiting oxygen index (LOI) of PC/5%PSNI/5%kaolin increased to 43.7%, and the 1.6 mm thick specimen achieved a UL-94 V-0 rating. Compared with neat PC, the peak heat release rate (pHRR), peak smoke production rate (pSPR), total heat release (THR), and total smoke production (TSP) were reduced by 56%, 42%, 25%, and 57%, respectively. Through a synergistic mechanism involving chemical crosslinking/charring and physical barrier effects, PSNI and kaolin promoted the formation of a high-quality char layer, effectively suppressing the transfer of heat and smoke.关键词：Polycarbonate;Polysiloxane;Kaolin;Low heat and low smoke187|22|0更新时间：2026-08-04
- 摘要：The composition and distribution of monomers have an important influence on the performance and application of the copolymers. In this study, the copolymerization of propylene and 4-methyl-1-pentene was catalyzed by non-metallocene pyridylamido hafnium catalyst with high stereoselectivity, and the effect of 4-methyl-1-pentene/propylene feed ratio on copolymerization was studied in detail. The pyridylamido hafnium catalyst showed high copolymerization activity, reaching 3.55×107 gpolymer·molHf-1·h-1. A series of propylene-4-methyl-1-pentene copolymers with different monomer compositions were successfully prepared. Carbon-13 nuclear magnetic resonance (13C-NMR), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and tensile tests showed that 4-methyl-1-pentene modified polypropylene was prepared at a low 4-methyl-1-pentene incorporation (3.4 mol%-7.7 mol%), and propylene modified poly(4-methyl-1-pentene) was obtained at a high 4-methyl-1-pentene incorporation (94.6 mol%-96.8 mol%). The copolymers with intermediate incorporation (19.7 mol%-77.9 mol%) are random elastomers. By varying the monomer composition, the material's properties were successfully altered from plastic to elastomer and then back to plastic.关键词：Hafnium catalysts;4-Methyl-1-pentene;Propene;Copolymerization123|22|0更新时间：2026-08-04
- 摘要：Polymer single-chain nanoparticles (SCNPs) with distinctly compartmentalized physicochemical species are promising in catalysis, nanomedicine, and high-performance materials. In this work, a fluorescent SCNP and the Janus derivative were synthesized via electrostatics-mediated sequential dynamic and covalent intramolecular crosslinking. The dynamic interaction between the carboxylic acid groups of the modifiers and the tertiary amine groups on the polymer chain was employed for the first-step intramolecular crosslinking, enabling synthesis of compact SCNPs in concentrated solutions. These dynamically crosslinked SCNPs were subsequently fixated by covalent bonding through UV-induced coupling of anthracene groups. The compact microstructure was preserved. The rotation of pendant tetraphenylethylene (TPE) units within the SCNP was greatly restricted giving rise to a significantly enhanced aggregation-induced emission (AIE). Similarly, a tadpole-like Janus fluorescent SCNP was derived from the diblock copolymer, providing an effective tool for interfacial fluorescence labeling by forming a well-defined monolayer.关键词：Single-chain nanoparticle;electrostatics-mediated;Intramolecular crosslinking;Janus;Aggregation-induced emission109|26|0更新时间：2026-08-04
- 摘要：The clinical treatment of gouty arthritis (GA) needs to balance rapid anti-inflammation in the acute phase and long-term sustained uric acid reduction. As a transdermal drug delivery method, microneedles can penetrate the skin barrier, respond to the acidic microenvironment of lesions, and enhance drug bioavailability through diversified drug delivery strategies, which show great potential for gouty arthritis treatment. In this study, uricase (UOX)-loaded polydopamine (PDA)-modified ZIF-90 (PDA-ZIF-90@UOX) was prepared. PDA-ZIF-90@UOX has both excellent photothermal conversion performance and pH-responsive dissociation characteristics, which can accurately match the therapeutic needs of GA. A phenylboronic acid-modified methacrylamidated hydroxypropyl chitosan/poly(vinyl alcohol) hydrogel (HPCS-MA-FCPBA/PVA) was synthesized, with colchicine (Col) and PDA-ZIF-90@UOX separately loaded into the shell and core hydrogel, and core-shell structured microneedles (MN@PZUC) were prepared via a two-step centrifugal template method. The prepared MN@PZUC had good pH-responsive drug release performance, releasing 57.9% of the total loaded Col and 63.1% of the total loaded UOX at pH=5.5. In vitro experiments confirmed that the combination of PDA-ZIF-90@UOX and Col reduced the proportion of M1-type pro-inflammatory macrophage subpopulation by 77%, showing excellent anti-inflammatory activity. In the SD rat model of hyperuricemia with gouty arthritis, the serum uric acid-lowering effect of MN@PZUC was 68% higher than that of the disease control group. These results indicate that MN@PZUC has good pH and photothermal dual-responsive capabilities, a significant anti-inflammatory effect, and can effectively alleviate ankle swelling in rats.关键词：Modified hydroxypropyl chitosan;Stimuli-responsive;Microneedles;Gouty arthritis76|28|0更新时间：2026-07-30
- 摘要：The secondary structure of proteins is tightly linked to their biological functions, and investigating polymer-protein interactions and their regulatory rules is of great significance. Linear poly(acrylic acid) (PAA) binds to amino groups on protein surfaces and triggers conformational transitions. However, systematic studies on how PAA with distinct topologies modulates protein conformation and function remain scarce. This work adopts the strategy of comparing molecular weights under identical topologies and contrasting topologies at comparable molecular weights. A series of linear and bottlebrush PAA samples are synthesized, and circular dichroism spectroscopy is employed to explore how polymer structures regulate proteins. The results reveal that linear PAA induces the transition from α-helix to β-sheet in low-molecular-weight proteins; longer equilibrium times for conformational conversion are observed at higher PAA molecular weights. At similar molecular weights, bottlebrush PAA accelerates this conformational transition. In contrast, the conformational changes of high-molecular-weight proteins show weak correlation with PAA structures. PAA topologies exert divergent effects on different proteins: bottlebrush PAA stabilizes β-galactosidase activity, whereas linear PAA impairs it. Mouse immunization assays verify that linear PAA acts as an adjuvant for ovalbumin (OVA) to elicit elevated levels of antigen-specific IgG and interferon-γ. Mechanistically, drastic antigen conformational remodeling induced by bottlebrush polymers tends to damage critical epitopes, while mild, gradual regulation by linear polymers better preserves functional epitopes. In summary, the molecular weight and topology of polymers serve as key parameters governing protein structure and function.关键词：Polymer topology;Poly(acrylic acid);Molecular bottlebrush;Protein conformation;Adjuvants165|27|0更新时间：2026-07-29
- 摘要：Employing functionalized initiators is a key strategy for the efficient synthesis of end-functionalized polymers. Initiators containing protonic functional groups are often incompatible with the harsh conditions of anionic polymerization, leading to uncontrollable product structures. In this work, amino-protected dipeptides were used as biomass initiators to achieve one-step controlled synthesis of end-functionalized poly(ethylene/propylene oxide) in multiprotonic systems. Experimental results and theoretical calculations jointly demonstrated that polymerization occured exclusively from the carboxyl site of the dipeptide. The two-component Lewis pair organocatalyst exerted an acidity reversal effect between the alcohol hydroxyl group at the growing polyether chain end and the peptide amide on the initiator moiety, ensuring that the polyethers had controllable molar mass, low dispersity, and fully retained end-group dipeptide structures. This work broadens the applicability of the acidity reversal mechanism and site-selective anionic ring-opening polymerization method, laying the foundation for further expansion of biomass initiators and the construction of diverse biomass-polyether functional materials.关键词：Biobased polymer;Polymer functionalization;Ring-opening polymerization;Organocatalytic polymerization224|47|0更新时间：2026-07-27
- 摘要：Due to its excellent electrical properties and processability, polyethylene is an important insulating material. Aromatic ketone compounds are widely used as voltage stabilizers to enhance the dielectric performance of polyethylene, yet their mechanism of action has not reached a consensus. This work investigated the effect of keto-enol isomerization on the electrical properties of low-density polyethylene when two structurally similar molecules, acetophenone and o-methylacetophenone, were employed as voltage stabilizers. Materials of acetophenone/polyethylene and o-methylacetophenone/polyethylene with different mass fractions of additives, as well as neat low-density polyethylene films, were prepared. These films underwent breakdown strength tests over a wide temperature range, conductivity tests, and surface potential decay tests. The results showed that both additives improved the breakdown and conductivity characteristics of polyethylene, with no significant difference in their effects on conductivity and traps. However, o-methylacetophenone outperformed acetophenone in enhancing breakdown performance. As the temperature decreases, the effectiveness of the two additives gradually converged; at the lower test temperature limit, their performance showed no clear gap, though both remain superior to the base material. Analysis indicates that the difference between the two types of additives stems from their distinct keto-enol tautomerization behaviors, and enolization is not the sole reason for the improvement in breakdown characteristics.关键词：Low-density polyethylene;Keto-enol isomerization;Voltage stabilizer;Breakdown strength243|50|0更新时间：2026-07-27
- 摘要：A photonic crystal (PC) hydrogel film with a double-network structure and dual-responsive properties was prepared. Using acrylic acid (AA) and acrylamide (AM) as polymerizable monomers and quaternized chitosan (QCS) as the second-network component, the double network hydrogels composed of the first network of P(AA-co-AM) and the second network of QCS were prepared. Scanning electron microscopy (SEM) and a universal testing machine were used to characterize the surface morphology and mechanical properties of the hydrogel film. The results indicated that the double network structure can effectively prevent shrinkage and damage of the hydrogel in the drying process, thereby enabling it to retain a smooth and intact surface. Besides, the synergistic reinforcement effect between the two networks significantly improves the fracture toughness and tensile strength of the hydrogel film. Meanwhile, the introduction of QCS effectively inhibited excessive swelling and improved the water-retention capacity of the hydrogel. The Stöber method was used to synthesize SiO2 nanoparticles, following by fabricating sequentially the SiO2 PC template and double network PC hydrogel film via vertical deposition and sacrificial template methods. Due to the flexibility of the hydrogel and the photonic band gap of the PC, the prepared film exhibited distinct structural color changes under tensile strain. By introducing phenylboronic acid into the reaction system, the resulting PC hydrogel gained multi-stimulus responsive characteristics, allowing for the visual detection of sugar solutions via structural color changes. The prepared PC hydrogel film, with excellent mechanical properties and dual-stimuli-responsive behavior, exhibits great potential for applications in wearable devices and visual health monitoring.关键词：Photonic crystal hydrogel;Double network structure;Strain response;Sugar response427|110|0更新时间：2026-07-27
- 摘要：The synthesis of bimodal functionalized polymers via cationic polymerization typically requires bimodal initiators such as p-dichlorobenzyl chloride (DCC), which are expensive, chemically unstable, and require low-temperature storage. Benzyl chloride can initiate cationic polymerization, but its initiation efficiency is generally low. In this study, the effect of the substituent structure of benzyl chloride on its apparent initiation efficiency (Iapp) was systematically investigated within the SnCl4 co-initiated 4-acetoxybenzene (STO) polymerization system. Experimental results demonstrated that the substituent of benzyl chloride determined its initiation efficiency, with higher methylation on the benzene ring leading to greater efficiency. When using bimethylbenzyl chloride initiators with multiple methyl substituents, such as 2,4-bis(methyl)chloro-1,3,5-trimethylbenzene (Ⅶ) and 3,6-bis(methyl)chlorodiene (Ⅷ), controllable initiation (Iapp≈1) was achieved, resulting in a narrow molecular weight distribution (MWD,
- 摘要：To achieve green and efficient ring-opening copolymerization of cyclic monomers and prepare sustainable block copolyesters, this study developed a series of bifunctional ionic organocatalysts based on ureas and organic bases. These catalysts exhibited excellent catalytic activity and controllability in the ring-opening polymerization of lactides and lactones, achieving a turnover frequency (TOF) as high as 2.341×105 h-1 in the homopolymerization of lactide. Among the prepared bifunctional ionic urea-base organocatalysts, the catalyst U2BN, derived from the reaction of 1,3-diphenylurea (U2) and tetrabutylammonium hydroxide (BN), exhibited high catalytic activity toward both lactide and caprolactone simultaneously. Therefore, a triblock copolyester with poly(ε-caprolactone-co-δ-valerolactone) (PCVL) as the soft segment and polylactide (PLA) as the hard segment was successfully synthesized via a one-pot sequential feeding strategy using U2BN. Nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC) analyses confirmed the ABA sequence structure. The PLA-PVCL-PLA block copolyester exhibited a microphase-separated morphology, as evidenced by the distinct melting peaks of PVCL and PLA in the differential scanning calorimetry (DSC) analysis. This structural feature endowed the polymer with thermoplastic elastomer characteristics, achieving a combination of high elongation at break and high elastic recovery. This study provides a new strategy for the catalytic and structural regulation of biodegradable copolyesters.关键词：Bifunctional organocatalysts;Urea;Ring-opening polymerization;Block copolyesters98|36|0更新时间：2026-07-24
- 摘要：Plastic pollution poses a significant threat to the ecological environment and human health, making it urgent to develop efficient and green recycling technologies for waste plastics. Chemical upcycling, which can directionally convert waste plastics into high-value chemicals or functional materials, is considered a key pathway toward a circular economy. Metal-organic frameworks (MOFs) have emerged as highly promising functional materials due to their high specific surface area, tunable pore size, and abundant active sites. Using waste plastics as ligand precursors to obtain organic acids via chemical depolymerization for MOF synthesis not only reduces the synthesis cost but also enables high-value resource utilization of waste plastics. This article systematically reviews the recent research progress on upcycling waste plastics into MOF materials, summarizes various synthesis strategies, and presents the applications of the as-prepared MOFs in adsorption, interfacial water evaporation, and energy storage and conversion. Finally, the current challenges and future development directions are analyzed and prospected, aiming to provide a reference for the synergistic development of waste plastic valorization and the synthesis of high-performance MOF materials.关键词：Waste plastic;Chemical upcycling;Metal-organic framework;Solar-driven interfacial water evaporation;Environmental remediation102|27|0更新时间：2026-07-24
- 摘要：In Alzheimer's disease (AD), the disruption of Aβ and tau proteostasis during misfolding, aberrant aggregation, clearance, and degradation represents an important pathological basis driving neurodegeneration and cognitive decline. The related pathologies do not occur in isolation, but are closely coupled with neuroinflammation, synaptic damage, and neuronal death. In this context, conventional strategies targeting pathological proteins still face several limitations, including imprecise recognition of pathological species, insufficient coordination between aggregation regulation and clearance, single-target intervention, and restricted brain delivery. Owing to their designable structures, tunable assembly behaviors, and extensible functionalities, polymeric nanomaterials have gradually expanded beyond drug delivery carriers to become functional systems capable of actively participating in abnormal protein regulation and multi-pathological intervention. Focusing on three representative material systems, including polymeric micelles, supramolecular assemblies, and peptide-based assemblies, this review systematically summarizes their design principles and research progress in the regulation of Aβ and tau pathology. Particular attention is given to their characteristics in inhibiting abnormal protein aggregation and promoting clearance, enabling multifunctional synergistic intervention, and optimizing brain delivery. Finally, this review summarizes the research trends in this field from passive delivery to active regulation and from single-target intervention to multifunctional synergy, providing a reference for the design and translational development of materials for abnormal protein regulation in AD.关键词：Alzheimer's disease;Polymeric nanomaterials;Proteostasis regulation;Aβ;Tau84|28|0更新时间：2026-07-24
- 摘要：With the rapid advancement of artificial intelligence, the demand for new materials driven by emerging technologies has become increasingly urgent making the development of novel high-performance polymer mechanical sensing materials of significant scientific research importance. In this study, poly(lactic acid)/polyaniline (PLA/PANI) hybrid fibre membrane materials were prepared using electrospinning method. The effects of various electrospinning process parameters, including spinning voltage and PLA concentration, on fibre morphology were investigated to determine the optimal spinning conditions. Furthermore, we examined the preparation of PLA/PANI fibre membrane mechanical sensing materials by incorporating polyaniline. The results showed that the well-defined fiber morphology was obtained at a spinning voltage of 15 kV, a PLA mass fractions solution of 7.50% and a PANI mass fraction of 0.12% of the solution. Comparing the electrical properties of PLA and PLA/PANI fibre membranes showed that adding PANI significantly increased the electrical conductivity of the PLA fibre membrane. Research the stress-sensing properties of the material has revealed that PLA/PANI composites exhibit significant piezoelectric behavior. This is the first reported instance of using PLA and PANI to construct a flexible stress sensor, providing a viable approach for the future fabrication of polymer piezoelectric sensor devices.关键词：Electrostatic spinning;Poly(lactic acid);Polyaniline;Force sensor88|18|0更新时间：2026-07-24
- 摘要：Poly(ethylene oxide) (PEO)-based composite solid electrolytes (CSEs) have attracted considerable attention owing to their excellent flexibility and interfacial compatibility. However, their practical application is limited by the poor dispersion of inorganic fillers and weak organic-inorganic interfacial interactions, which lead to severely impeded ion transport. Herein, we proposed a synergistic design strategy based on oxygen-vacancy-rich aligned nanofibers to construct continuous directional ion transport pathways and enhance organic-inorganic interfacial interactions. This resulting CSE delivered a high ionic conductivity of 0.79 mS·cm-1 at 60 ℃, a Li+ transference number of 0.74, and a wide electrochemical window of 5.2 V. Moreover, the Li symmetric cell demonstrated excellent cycling stability with 1500 h at 0.5 mA·cm-2, while the LFP cell retained 89% capacity retention after 200 cycles.关键词：Polymer-based composite solid electrolytes;Aligned nanofibers;Oxygen vacancies;Interfacial regulation;Lithium-ion transport170|24|0更新时间：2026-07-23
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