文献类型：期刊文献

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

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

年份：2009

卷号：62

期号：5

起止页码：629

外文期刊名：POLYMER BULLETIN

收录：;EI(收录号：20092012081813);WOS:【SCI-EXPANDED(收录号:WOS:000265775400006)】；

基金：The authors are grateful for the financial supports of the Key Project of National Natural Science Foundation of China (No. 50733001).

语种：英文

外文关键词：Isotherms - Lactic acid - Free energy - Molecules - Crystallization kinetics

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.