Effect of PPC on the Crystallization Behavior of Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)

Abstract

Abstract: The crystallization behavior of PHBV and PHBV/PPC(mass ratio: 30∶70) blend was investigated by DSC and FTIR. The result showed that PHBV and PPC had a certain extent of transesterification reaction in the melt blending process. The certain interaction between the two macromolecules was confirmed by means of FTIR analysis. The fold surface free energy of the developing crystals of PHBV isothermally crystallized from melt decreased,however,the relative degree of crystallization,the linear growth rate of spherulites,equilibrium melting temperature and crystallization capability of PHBV decreased due to the addition of PPC.

Key words: Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)(PHBV), Poly(propylene carbonate), Crystallization, Transesterification reaction

CLC Number:

O631

TrendMD:

LI Jing, LIU Jing-Jiang. Effect of PPC on the Crystallization Behavior of Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)[J]. Chem. J. Chinese Universities, 2004, 25(6): 1145.

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Effect of PPC on the Crystallization Behavior of Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)

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