Nonisothermal Crystallization Kinetics of Poly(lactic acid) Nucleated with a Multiamide Nucleating Agent

作者：Xu Ting; Wang Yaming^*; Han Qian; He Dongran; Li Qian; Shen Changyu

来源：Journal of Macromolecular Science Part B-Physics, 2014, 53(10): 1680-1694.

DOI：10.1080/00222348.2014.910049

• biodegradable
• Nonisothermal crystallization kinetics
• nucleating agent
• Poly(lactic acid)

Addition of a commercial availablemultiamide compound (N, N', N ''-tricyclohexyl-1,3,5-benzenetricarboxylamide, defined here as TMC) into ecofriendly poly(lactic acid) (PLA) can accelerate the crystallization rate of the material remarkably and broaden its applications. In this paper, the nonisothermal crystallization behavior of biodegradable PLA nucleated by 0.3 wt.% of TMC was investigated by differential scanning calorimetry (DSC). The modified Avrami, Tobin, Ozawa, and Mo models were applied to describe the kinetics of the crystallization process. Various parameters of nonisothermal crystallization, such as the crystallization half-time and crystallization rate constant, reflected that TMC significantly accelerated the crystallization process. The activation energy values of the neat PLA and PLA/TMC blend, determined by the Kissinger method, increased with the addition of TMC. The study should be helpful for understanding the relationship between processing and properties of this material.

• 出版日期2014
• 单位郑州大学