摘要
用 FTIR和 DSC研究了 PHBV及其与聚碳酸亚丙酯 ( PPC)熔融共混样的熔融结晶行为和等温结晶动力学 .结果表明 ,PHBV与 PPC熔融共混过程中发生了酯交换反应 ,两组分间存在一定的相互作用 .PPC虽然能降低 PHBV结晶折迭链的表面自由能 ,但同时也能够降低 PHBV的结晶度、球晶径向生长速率、平衡熔点和结晶能力 .
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. [WT5HZ]
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2004年第6期1145-1148,共4页
Chemical Journal of Chinese Universities
基金
中国科学院创新重点课题 (批准号 :KGCX2 -2 0 2 A-0 3 )
国家"八六三"课题 (批准号 :2 0 0 2 AA 3 3 40 9)资助
关键词
聚(β-羟基丁酸酯-β-羟基戊酸酯)
聚碳酸亚丙酯
结晶
酯交换反应
Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)(PHBV)
Poly(propylene carbonate)
Crystallization
Transesterification reaction
