期刊
CHINESE JOURNAL OF POLYMER SCIENCE
卷 38, 期 12, 页码 1335-1344出版社
SPRINGER
DOI: 10.1007/s10118-020-2439-1
关键词
Polylactide; Blending strategies; Refractive index matching; Poly(epichlorohydrin-co-ethylene oxide); Ionomers
资金
- National Natural Science Foundation of China [51573130]
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 materialsviacost-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 moietiesviaa simple chemical method, and we blended the resulting ionomers with PLA. The best blend showed an impact strength of > 80 kJ/m(2), 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.
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