Journal
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
Volume 53, Issue 10, Pages 1680-1694Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00222348.2014.910049
Keywords
biodegradable; Nonisothermal crystallization kinetics; nucleating agent; Poly(lactic acid)
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Funding
- Major Project in Public Interest of Henan Province [HNZB [2011] N91]
- National Basic Research Program of China (973 Program) [2012CB025903]
- National Natural Science Foundation of China [50873094]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
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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.
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