文献类型：期刊文献

英文题名：Crystalline, Thermal, and Biodegradable Properties of Poly(L-Lactic Acid)/Poly(D-Lactic Acid)/POSS Melt Blends

作者：Xu, Huijun[1,2];Tang, Songchao[1,2];Chen, Jianding[1,2];Chen, Nan[3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai, Peoples R China;[3]Univ Southern Calif, Alfred E Mann Inst Biomed Engn, Los Angeles, CA USA

年份：2016

卷号：55

期号：10

起止页码：1000

外文期刊名：POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING

收录：;EI(收录号：20162902596833);WOS:【SCI-EXPANDED(收录号:WOS:000380141400002)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant No. 51173041).

语种：英文

外文关键词：Blends; crystallization; degradation; poly(D-lactic acid); poly(L-lactic acid); POSS; stereocomplex

摘要：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] .