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Erschienen in: Polymer Bulletin 5/2009

01.05.2009 | Original Paper

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

verfasst von: Zhizhong Su, Weihong Guo, Yongjun Liu, Qiuying Li, Chifei Wu

Erschienen in: Polymer Bulletin | Ausgabe 5/2009

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Abstract

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 σ 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.

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Metadaten
Titel
Non-isothermal crystallization kinetics of poly (lactic acid)/modified carbon black composite
verfasst von
Zhizhong Su
Weihong Guo
Yongjun Liu
Qiuying Li
Chifei Wu
Publikationsdatum
01.05.2009
Verlag
Springer-Verlag
Erschienen in
Polymer Bulletin / Ausgabe 5/2009
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-009-0047-x

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