Refractive Index Engineering as a Novel Strategy toward Highly Transparent and Tough Sustainable Polymer Blends  

作　　者：Si-Ting Sun Hang Wang Dong Huang Ying-Li Ding Yang Zhang Dong-Po Song Kun-Yu Zhang Li Pan Yue-Sheng Li 

机构地区：[1]Department of Polymer Science and Engineering,School ofChemical Engineering and Technology,Tianjin University,Tianin 300350,China [2]Department of Chemical Engineering,Xiamen University,Xiamen 361005,China [3]Tianjin Key Laboratory ofComposite and Functional Materials,School ofMaterials Science and Engineering,Tianjin University,Tlanin 300350 China [4]Cllaborotive lovation Center ofChemical Science and Engineering(injin),Tianjin 300072 China

出　　处：《Chinese Journal of Polymer Science》2020年第12期1335-1344,共10页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51573130)。

摘　　要：High transparency and toughness are prerequisites for sustainable polymers if they are to find wide application as alternatives to petroleum-based polymers.However,the utility of sustainable polymers such as commercially available polylactide(PLA)is limited by their inherent brittleness and high cost.Unfortunately,toughening PLA-based materials via cost-effective blending strategies without sacrificing transparency remains a challenge.Herein,we report a novel strategy involving active refractive index matching for creation of highly transparent and tough PLA blends.Specifically,we engineered the refractive index of a promising renewable poly(epichlorohydrin-co-ethylene oxide)elastomer by introducing polar ionic moieties via a simple chemical method,and we blended the resulting ionomers with PLA.The best blend showed an impact strength of>80 kJ/m2,an elongation at break of 400%,and high transparency(90%).These characteristics are of great importance for potential applications such as packaging.Our strategy offers a versatile new way to prepare high-performance sustainable polymer materials with excellent transparency.

关 键 词：POLYLACTIDE Blending strategies Refraaive index matching Poly(epichlorohydrin-co-ethylene oxide) IONOMERS 

分 类 号：TQ317[化学工程—高聚物工业]