取代基对PPC/聚苯醚羧酸酯共混体系相容性的影响

由二氧化碳活化并与环氧丙烷共聚而成的脂肪族聚碳酸酯(PPC)是一类有发展前途的新型高分子弹性体。研究它与其它高聚物的混容性及混容机制对于开拓这一新材料的应用领域具有十分重要的意义。本文合成了一系列不同取代度和不同链长酯基的聚苯醚羧酸酯E(x)-C^yPPO]^3],探索了PPC与各聚苯醚狡酸醋的混容性,讨论了聚苯醚梭酸酷的取代度及侧基链长对PPC/E(x)-C^yPPO共混体系混容性的影响。

EFFECT OF SUBSTITUENTS ON THE MISCIBILITY OF POLY (PROPYLENE CARBONATES) AND ESTERS OF CARBOXYLATED POLY(2,6-DIMETHYL-1,4-PHENYLENE OXIDE)

Poly(propylene carbonate)(PPC)(copolymer of 1,2-epoxypropane and carbon dioxde) was blended with the esters of carboxylated poly(2,6-dimethyl-1,4-phenylene oxide),(E(x)C,PPO).The effects of the degree of substitution and chain length of the substituents in E(x)-C~yPPO on the miscibility of PPC/E(x)-C~yPPO blends were discussed.The miscibility of the blends is increased with the increase of the content and the chain length of the substitute groups in E(x)-C~yPPO;however,the blend is immiscible when the content of substitute groups in E(x)-C~yPPO was low and the chain length was short. FTIR data indicated that there is a specific interaction between PPC and E(12)-C~(32)PPO.