【摘要】 以辛酸亚锡为催化剂,通过开环聚合制备了三亚甲基碳酸酯(TMC)与己内酯(CL)的共聚物P(TMC-co-CL),并利用差示扫描量热仪(DSC)和热重分析仪(TGA)研究了P(TMC-co-CL)的热力学性能。结果表明,制备的P(TMC-co-CL)为无规共聚物,其玻璃化温度值随着TMC含量的增加而升高,符合Fox方程;当CL含量达到80%(物质的量分数,下同)时,共聚物出现熔点且随CL含量的增加而升高;此外,制备的P(TMC-co-CL)具有良好的热稳定性能,热分解温度在280℃以上。更多还原

【Abstract】 The thermal properties of the copolymers of trimethylene carbonate and ε-caprolactone were analyzed by DSC and TGA.The DSC results show that the copolymers prepared by ring-opening polymerization are random because of only one glass transition temperature(Tg),and the values of Tg increased with the increase of the content of trimethylenen carbonate,which is consistent with the Fox equation.The copolymers have the melting point(Tm) when the content of CL is up to 80% and the thermal degradation temperature of the copolymers is higher than 280℃ determined by TGA,and increased with the increase of the content of ε-caprolactone.更多还原