聚(碳酸丁二醇酯-co-异山梨醇碳酸酯-co-螺环碳酸酯)的制备与性能研究

Synthesis and Properties of Poly(butylene Carbonate-co-isosorbide Carbonate-co-spiroglycol Carbonate)

通过两步熔融缩聚法合成了一系列基于碳酸二苯酯、1,4-丁二醇、异山梨醇和螺二醇的三元共聚碳酸酯(PBISC),其结构和组成经 1 H NMR和 13 C NMR表征,并采用GPC、 TGA、 DSC、 WXRD和拉伸试验分别对PBISC的性能进行研究。结果表明:PBISC共聚物的玻璃化转变温度为63~72 ℃, T d,max 值接近350 ℃, PBISC共聚物具有较低的结晶性能。

A series of terpolycarbonates(PBISC) based on diphenyl carbonate, 1,4-butyanediol and isosorbide in combination with spiroglycol were synthesized via two-step melt polymerization procedure. The chemical structure and composition of PBISC were characterized by 1 H NMR and 13 C NMR spectrum. The molecular weight, thermal stabilities, thermal performances, crystallization behavior and mechanical properties were detected through GPC, TGA, DSC, WXRD and tensile testing, respectively. The results indicated that glass transition temperature values of PBISC copolymers was 63~72 ℃, T d, max values of PBISC was closing to 350 ℃ and PBISC exhibited low crystalline ability.