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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The authors are grateful for the financial supports of the Key Project of National Natural Science Foundation of China (No. 50733001).
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Su, Z., Guo, W., Liu, Y. et al. Non-isothermal crystallization kinetics of poly (lactic acid)/modified carbon black composite. Polym. Bull. 62, 629–642 (2009). https://doi.org/10.1007/s00289-009-0047-x
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DOI: https://doi.org/10.1007/s00289-009-0047-x