Preparation and PM<sub>0.3</sub> Filtration Performance of Stereocomplexed Poly(lactic acid) Nanofibers Induced by High-dielectric Hetereostructures

Ting-bin Li; Xin-yu Li; Gui-ying Zhu; Cun-min Wang; Liang Jiang; Jiang Shao; Ming-ming Zhang; Huan Xu

doi:10.11777/j.issn1000-3304.2024.24241

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Preparation and PM_0.3 Filtration Performance of Stereocomplexed Poly(lactic acid) Nanofibers Induced by High-dielectric Hetereostructures

Research Article | 更新时间：2025-02-27

- Preparation and PM_0.3 Filtration Performance of Stereocomplexed Poly(lactic acid) Nanofibers Induced by High-dielectric Hetereostructures
- Acta Polymerica Sinica Vol. 56, Issue 3, Pages: 476-486(2025)
- 作者机构：
  
  1.国能神东煤炭集团有限责任公司榆林 719315
  2.中国矿业大学安全工程学院徐州 221116
  3.中国矿业大学材料与物理学院徐州 221116
  4.中国矿业大学建筑与设计学院徐州 221116
  5.中国安全生产科学研究院北京 100012
- 作者简介：
  
  Xin-yu Li, E-mail: li-xinyu@cumt.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2024.24241
  CLC：
- CSTR：32057.14.GFZXB.2024.7317
- Received：15 September 2024，
  
  Accepted：2024-11-11，
  
  Published Online：09 January 2025，
  
  Published：20 March 2025
- 稿件说明：
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李庭斌, 李欣雨, 朱桂英, 王存民, 江亮, 邵将, 张明明, 徐欢. 高介电纳米异质结诱导立构复合化聚乳酸纳纤膜制备及其PM_0.3过滤性能研究. 高分子学报, 2025, 56(3), 476-486

Li, T. B.; Li, X. Y.; Zhu, G. Y.; Wang, C. M.; Jiang， L.; Shao, J.; Zhang, M. M.; Xu, H. Preparation and PM_0.3 filtration performance of stereocomplexed poly(lactic acid) nanofibers induced by high-dielectric hetereostructures. Acta Polymerica Sinica, 2025, 56(3), 476-486
李庭斌, 李欣雨, 朱桂英, 王存民, 江亮, 邵将, 张明明, 徐欢. 高介电纳米异质结诱导立构复合化聚乳酸纳纤膜制备及其PM_0.3过滤性能研究. 高分子学报, 2025, 56(3), 476-486 DOI： 10.11777/j.issn1000-3304.2024.24241. CSTR： 32057.14.GFZXB.2024.7317.

Li, T. B.; Li, X. Y.; Zhu, G. Y.; Wang, C. M.; Jiang， L.; Shao, J.; Zhang, M. M.; Xu, H. Preparation and PM_0.3 filtration performance of stereocomplexed poly(lactic acid) nanofibers induced by high-dielectric hetereostructures. Acta Polymerica Sinica, 2025, 56(3), 476-486 DOI： 10.11777/j.issn1000-3304.2024.24241. CSTR： 32057.14.GFZXB.2024.7317.

摘要

开发高性能空气过滤材料对于保护人体生命健康十分重要. 本研究通过静电诱导立构复合化策略使聚

-乳酸(PLLA)和聚

-乳酸(PDLA)链间发生相互作用，触发氢键的产生，促进C＝O偶极子取向，诱导立构复合化聚乳酸(PLA)的形成，然后利用银掺杂二氧化钛(Ag-TIO)纳米电介质促进分子相互作用以进一步增强PLA的立构复合，制备具有高电活性的纳米纤维膜实现高效低阻的空气过滤. 结果表明，Ag-TIO纳米电介质与静电诱导立构复合化策略协同提升PLA纳米纤维膜的电活性、过滤性能和力学性能：纤维显著细化(从467 nm到162 nm)，表面电势大幅提升(从0.15 kV到3.20 kV)，对PM

0.3

具有优异的过滤效率同时保持超低压降(93.3%

32 Pa

32 L/min)，抗拉强度和断裂伸长率分别为11.9 MPa和24.0%，杨氏模量和断裂韧性高达202.6 MPa和2.48 MJ/m

，具有良好的实际应用性. 本研究所提出的可降解纳米纤维膜在超细颗粒物的高效过滤中具有广阔应用前景.

Abstract

The development of high-performance air filtration materials is important for protecting human life and health. In this study

the interaction between poly(

-lactic acid) (PLLA) and poly(

-lactic acid) (PDLA) chains was induced by the electro-induced stereocomplexation strategy

which triggered the generation of hydrogen bonding

promoted the orientation of the C＝O dipole

and induced the formation of stereocomplexed poly(lactic acid) (PLA). Then

silver-doped titanium dioxide (Ag-TIO) nanodielectrics were used to promote molecular interactions to further enhance the stereocomplexation of PLA

and nanofiber membranes with high electroactivity were prepared to achieve high-efficiency and low-resistance air filtration. The results showed that Ag-TIO nanodielectrics and electro-induced stereocomplexation strategy synergistically enhanced the electroactivity

the filtration performance and the mechanical properties of PLA nanofiber membranes: the fibers were significantly refined (from 467 nm to 162 nm)

and the surface potentials were dramatically increased (from 0.15 kV to 3.20 kV)

which resulted in an excellent filtration efficiency against PM

0.3

while maintaining an ultra-low pressure drop (93.3%

32 Pa

32 L/min). Moreover

the mechanical properties of the membranes were excellent with tensile strength and elongation at break of 11.9 MPa and 24.0%

respectively

while Young's modulus and fracture toughness were as high as 202.6 MPa and 2.48 MJ/m

which showed good practical applicability. The proposed biodegradable nanofibrous membranes have a broad application prospect in the efficient filtration of ultrafine particles.

关键词

Keywords

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徐欢

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中国安全生产科学研究院

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中国矿业大学, 安全工程学院

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⁰

Preparation and PM0.3 Filtration Performance of Stereocomplexed Poly(lactic acid) Nanofibers Induced by High-dielectric Hetereostructures

DOI：10.11777/j.issn1000-3304.2024.24241

摘要

Abstract

关键词

Keywords

references

Preparation and PM_0.3 Filtration Performance of Stereocomplexed Poly(lactic acid) Nanofibers Induced by High-dielectric Hetereostructures