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

被引：8
|
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
来源：
POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING | 2016年 / 55卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Blends; crystallization; degradation; poly(D-lactic acid); poly(L-lactic acid); POSS; stereocomplex; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; MECHANICAL-PROPERTIES; NANOCOMPOSITES; COMPOSITES; MORPHOLOGY; STEREOCOMPLEX; POLYLACTIDES; STABILITY; BEHAVIOR; KINETICS;
D O I：
10.1080/03602559.2015.1098686
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
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] .
引用
收藏
页码：1000 / 1011
页数：12
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