Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Properties, Structure and Crystallization of Poly Lactic Acid/Zinc Oxide Pillared Organic Saponite Nanocomposites

폴리락틱산/산화아연 기둥구조의 유기사포나이트 나노복합체의 특성, 구조 및 결정화

  • Zhen, Weijun (Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Region, Xinjiang University) ;
  • Sun, Jinlu (Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Region, Xinjiang University)
  • Received : 2013.10.30
  • Accepted : 2014.02.04
  • Published : 2014.05.25
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Abstract

ZnO pillared saponite was synthesized via a microwave hydrolysis method. To enhance interfacial compatibility between zinc oxide (ZnO) pillared saponite and poly lactic acid (PLA), ZnO pillared organic saponite was prepared by intercalation modification of cetyltrimethylammonium bromide. Moreover, PLA/ZnO pillared organic saponite nanocomposites were prepared by melting processing. The microstructure analysis of PLA/ZnO pillared organic saponite nanocomposites showed that ZnO pillared organic saponite was exfoliated and homogeneouslydispersed in PLA matrix. The property results showed that ZnO pillared organic saponite improved the mechanical properties and thermal stabilities of PLA/ZnO pillared organic saponite nanocomposites. Differential scanning calorimetry (DSC) demonstrated that ZnO pillared organic saponite restrained the appearance of cold crystallization, lowered the glass transition temperature and melting temperature of PLA, and improved the crystallinity of PLA. The results demonstrated that ZnO pillared organic saponite had a good interfacial compatibility and heterogeneous nucleation effect in PLA matrix, and also played an active role in accelerating the crystallization process of PLA.

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