4,4'-二苯氧基二苯砜、4,4'-二苯氧基二苯酮、对苯二甲酰氯三元共聚物的合成

Synthesis of Terpolymers from 4,4'- Diphenoxydiphenylsulfone, 4,4'-Diphenoxybenzophenone and Terephthaloyl Chloride

以 4,4 -二苯氧基二苯砜 (DPODPS)作为第 3单体 ,将其与对苯二甲酰氯 (TPC)和 4,4 -二苯氧基二苯酮 (DPOBP)在无水 Al Cl3 和 N-甲基吡咯烷酮 (NMP)存在下 ,于 1 ,2 -二氯乙烷 (DCE)中进行低温溶液共缩聚反应 ,合成了一系列 DPODPS/DPOBP/TPC三元共聚物 .用 IR、WAXD、DSC和 TG等对共聚物进行了表征和性能测试 .研究结果表明 ,随着 DPODPS与 DPOBP摩尔比的增加 ,共聚物的玻璃化转变温度 (Tg)和热分解温度 (Td)逐渐增加 ,而其熔融温度 (Tm)及结晶温度 (Tc)则逐渐降低 .

A series of terpolymers(DPODPS/DPOBP/TPC) were prepared by low temperature solution polycondensation of 4,4 diphenoxydiphenylsulfone(DPODPS), 4,4 diphenoxybenzophenone(DPOBP) and terephthaloyl chloride(TPC) in 1,2 dichloroethane in the presence of AlCl 3 and NMP. IR?WAXD?TG and DSC techniques were used to study the general properties of the copolymers. The results showed that the T g and T d of the copolymers increased with the increase in DPODPS content, the T m and T c of the copolymer decreased with increase in DPODPS content. The terpolymers obtained have lower melting temperatures than polyether ketone ether ketone ketone(PEKEKK), and their heat resistance properties are as good as that of PEKEKK.