Non-isothermal crystallization kinetics of poly (lactic acid)/modified carbon black composite

被引：91

作者：

Su, Zhizhong ^{[1
]}

Guo, Weihong ^{[1
]}

Liu, Yongjun ^{[1
]}

Li, Qiuying ^{[1
]}

Wu, Chifei ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Polymer Alloy Lab, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

来源：

POLYMER BULLETIN | 2009年 / 62卷 / 05期

基金：

中国国家自然科学基金;

关键词：

NON-ISOTHERMAL CRYSTALLIZATION; MELT-CRYSTALLIZATION; POLY(L-LACTIC ACID); BEHAVIOR; POLYPROPYLENE; DSC; POLY(ETHYLENE-TEREPHTHALATE); POLY(ETHERETHERKETONE);

D O I：

10.1007/s00289-009-0047-x

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 novel method was employed to modify the surface of carbon black (CB) by an organic small molecule in a Haake Rheomix mixer. Jeziorny equation, the Ozawa model and Mo equation were employed to describe the non-isothermal crystallization process of poly (lactic acid) (PLA), PLA/CB and PLA/modified carbon black (MCB) composites. It is found that the Ozawa model fail to describe the non-isothermal crystallization process for PLA and its composites, while Jeziorny equation and Mo's theory provide a good fitting. The comparison of crystallization kinetics between PLA/MCB and PLA through Lauritzen-Hoffman model indicates that there appears a transition from regimes II to III in PLA and PLA/MCB. The fold surface free energy sigma (e) of PLA/MCB composite is higher than that of neat PLA, implying that the existence of nucleating agent is unfavorable for the regular folding of the molecule chain.

引用

页码：629 / 642

页数：14

共 27 条

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