期刊
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING
卷 55, 期 10, 页码 1000-1011出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/03602559.2015.1098686
关键词
Blends; crystallization; degradation; poly(D-lactic acid); poly(L-lactic acid); POSS; stereocomplex
资金
- National Natural Science Foundation of China [51173041]
A ternary nanocomposite consisting of poly(L-lactic acid) (PLLA), poly(D-lactic acid) (PDLA), and epoxy cyclohexyl polyhedral oligomeric silsesquioxane (e-POSS) was prepared by reactive blending method. Scanning electron microscopy revealed that the feeding of three compositions in batches, i.e., PDLA incorporation at different times, was more beneficial for the even dispersion of POSS in matrix. POSS introduction improved the homocrystallinity and stereocomplex of the blends. Rheological properties and heat resistance were enhanced, which indicated potential extensive application of PLLA-based materials. The optimization of degradation stability in saline buffer was attributed to the various hydrophobic properties of blends caused by POSS structure. [GRAPHICS] .
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