二氧化碳/环氧丙烷/邻苯二甲酸酐三元共聚物的合成及性能

Synthesis and Properties of Terpolymers Derived from Carbon Dioxide,Propylene Oxide and Phthalic Anhydride

利用负载戊二酸锌(s-ZnGA)催化二氧化碳(CO2)、环氧丙烷(PO)和邻苯二甲酸酐(PA)三元共聚反应,得到一种新型的三元聚合物聚碳酸亚丙酯苯酐(PPCPA)。用核磁共振谱(1H-NMR和13C-NMR)表征了聚合物结构。研究了PPCPA的热性能和力学性能,结果表明,PA的引入可以提高聚碳酸亚丙酯(PPC)的热稳定性能和力学性能,随着PA含量的增加,PPCPA的热分解温度显著升高,其玻璃化温度(Tg)和拉伸强度先增高后降低,主要是由于聚合物中聚醚含量增加所致。

Terpolymerization of carbon dioxide （CO2） with propylene oxide （PO） and phthalic anhydride （PA） was successfully carried out using supported zinc glutarate catalyst（s-ZnGA）. Consequently giving high molecular weight poly（propylene carbonate phthalate） （PPCPA） in a very high yield. The resulting terpolymers were fully characterized by ^1H-NMR and ^13C-NMR techniques. The thermal and mechanical properties of PPCPA were also investigate＆ Thermogravimetrie analysis （rIGA） indicates that the decomposition temperature of PPCPA dramatically increases due to the introduction of the phenyl of PA into the backbone of terpolymer. The glass transition temperature （Tg） and tensile strength of PPCPA first increase and finally decrease with increasing PA content in PPCPA, owing to the increasing mntent of polyether in PPCPA.