Synthesis of Reactive Hybrid Nanoparticles and Their Compatibilization Effects on Immiscible Polymer Blends

Fu Zhi-ang; Wang Heng-ti; Dong Wen-yong; Li Yong-jin

doi:10.11777/j.issn1000-3304.2017.16288

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Synthesis of Reactive Hybrid Nanoparticles and Their Compatibilization Effects on Immiscible Polymer Blends

Research Article | 更新时间：2021-05-18

- Synthesis of Reactive Hybrid Nanoparticles and Their Compatibilization Effects on Immiscible Polymer Blends
- Acta Polymerica Sinica Issue 2, Pages: 334-341(2017)
- 作者机构：
  
  杭州师范大学材料与化学化工学院杭州 310036
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2017.16288
  CLC：
- Published：20 February 2017，
  
  Received：17 September 2016，
  
  Revised：6 November 2016，
扫描看全文
Fu Zhi-ang, Wang Heng-ti, Dong Wen-yong, Li Yong-jin. Synthesis of Reactive Hybrid Nanoparticles and Their Compatibilization Effects on Immiscible Polymer Blends. [J]. Acta Polymerica Sinica (2):334-341(2017)
DOI：

Fu Zhi-ang, Wang Heng-ti, Dong Wen-yong, Li Yong-jin. Synthesis of Reactive Hybrid Nanoparticles and Their Compatibilization Effects on Immiscible Polymer Blends. [J]. Acta Polymerica Sinica (2):334-341(2017) DOI： 10.11777/j.issn1000-3304.2017.16288.

摘要

采用八环氧多面体低聚倍半硅氧烷（POSS（epoxy）

）和端羧基聚甲基丙烯酸甲酯（PMMA-COOH）的开环反应，运用Graft-onto的方法合成了一种反应性杂化纳米粒子：四环氧多面体低聚倍半硅氧烷-接枝-四聚甲基丙烯酸甲酯（POSS（epoxy）

-PMMA

）.通过傅里叶红外光谱仪（FTIR），示差扫描量热仪（DSC），热失重分析仪（TGA），核磁共振波谱仪（

H-NMR）等对反应性杂化纳米粒子的结构进行了表征，结果表明成功合成了POSS（epoxy）

-PMMA

.并将上述合成的反应性杂化纳米粒子应用于聚偏氟乙烯/聚乳酸（PVDF/PLLA）不相容体系的增容，运用万能材料试验机、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对其增容原理和效果进行研究，结果表明POSS（epoxy）

-PMMA

可以作为PVDF/PLLA不相容体系的反应性增容剂.

Abstract

Compatibilization of immiscible polymer blends using reactive nanoparticles as the compatibilizer is reported. The reactive hybrid nanoparticles

POSS (epoxy)

-PMMA

were synthesized

via

eight epoxy based octa polyhedral oligomeric-silsesquioxane (POSS (epoxy)

) initiated ring-opening grafting of a carboxyl acid-terminated polymethylmethacrylate (PMMA-COOH) (

side chain

=3850). The molecular structure of the synthesized POSS (epoxy)

-PMMA

was investigated by Fourier transform infrared spectroscopy (FTIR) spectra

differential scanning calorimetry (DSC)

thermogravimetric analysis (TGA) and nuclear magnetic resonance (

H-NMR). Both FTIR and NMR results indicated that PMMA oligomers were chemically grafted onto the POSS and four epoxide groups remained on the POSS core. DSC measurement showed that the glass transition temperature (

) of the grafted PMMA was lower than that of the PMMA oligomer before grafting. POSS (epoxy)

-PMMA

was then used as the reactive compatibilizer for the immiscible polyvinylidene fluoride/poly (L-lactide) (PVDF/PLLA) blends. The reactive epoxide groups of POSS (epoxy)

-PMMA

reacted with the end COOH groups of PLLA

and the PMMA tails on the POSS (epoxy)

-PMMA

had specific interactions with PVDF molecular chains. It was found that the domain size decreased drastically for the compatibilized blends and the interface adhesion was improved. The

of both PVDF and PLLA shifted to each other after the incorporation of the reactive nanoparticles. At the same time

the phase size decreased continuously with increasing the loading of the reactive hybrid nanoparticles. It is therefore considered that the reactive nanoparticles formed a Janus structure located at the interface and took the role as the effective compatabilizer for PVDF and PLLA after reactive blending. Moreover

the compatibilized blends exhibited drastic improvements in the mechanical properties

compared with the uncompatibilized blends. The tensile strength and elongation at break were 50 MPa and 7.8%

respectively

for the blend with 5 wt% POSS (epoxy)

-PMMA

while those for the uncompatibilized blend were 40 MPa and 3%. This research provides a new possibility to compatibilize immiscible polymer blends by inorganic nanoparticles.

关键词

接枝原位增容反应性共混不相容

Keywords

GraftingIn situ compatibilizationReactive blendingImmiscible

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