Synergistic Effects of PEG and MWCNTs on Crystallization Behavior of PLLA

被引：51

作者：

Li, Yanli ^{[1
]}

Wu, Haiyan ^{[1
]}

Wang, Yong ^{[1
]}

Liu, Li ^{[1
]}

Han, Liang ^{[1
]}

Wu, Jun ^{[1
]}

Xiang, Fangming ^{[1
]}

机构：

[1] SW Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Peoples R China

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2010年 / 48卷 / 05期

基金：

中国国家自然科学基金;

关键词：

annealing; crystallization; crystal structures; poly(L-lactide); MULTIPLE MELTING BEHAVIOR; WALLED CARBON NANOTUBES; POLY(LACTIC ACID); POLY(L-LACTIDE); POLYLACTIDE; NUCLEATION; MORPHOLOGY; NANOCOMPOSITES; STEREOCOMPLEX; TRANSITION;

D O I：

10.1002/polb.21917

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This work reported the crystallization behaviors of poly(L-lactide) (PLLA) with the presence of polyethylene glycol (PEG) and/or functionalized multiwalled carbon nanotubes (FMWCNTs). The crystallization behaviors occurred in the different conditions, including nonisothermal, isothermal and during the annealing process, were analyzed comparatively using differential scanning calorimetry, wide angle X-ray diffraction, and polarized optical microscope. The results show that PEG as an efficient plasticizer of PLLA enhances the mobility of PLLA chain segments, which leads to the decrease of glass transition temperature and the enhancement of crystallization ability of PLLA. FMWCNTs as a nucleating agent of PLLA crystallization promote the crystallization of PLLA apparently. With the presence of PEG and FMWCNTs, the crystallization of PLLA is well improved in all conditions, indicating the synergistic effects of PEG and FMWCNTs on PLLA crystallization. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 520-528, 2010

引用

页码：520 / 528

页数：9

共 38 条

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