CAJ | 학술논문

以丁二酸、丁二醇和1,2.丙二醇为原料,采用溶液结合熔融缩聚合成法,得到了一系列聚(丁二酸丁二醇酯-CO-丁二酸1,2-丙二醇酯)共聚物P(BS-co-PS).利用~1HNMR、GPC和X射线衍射等方法对共聚物的组成,分子量及其分子量分布、热学性能、结晶性能、力学性能等进行了研究.结果表明:反应4h,即可得到数均分子量60000以上的聚(丁二酸丁二醇酯-co-丁二酸1,2-丙二醇酯)共聚物P(BS-co-PS),分子量分布均小于2.0;随着1,2-丙二醇添加量的增加,共聚物的结晶度降低,熔点下降,但断裂伸长率明显增加,当添加量为30%(摩尔分数)时,断裂伸长率达到417%,表明共聚物具有良好的延展性能;所有共聚物的热分解温度均在300℃以上,具有良好的热稳定性.
이정이산、정이순화1,2.병이순위원료,채용용액결합용융축취합성법,득도료일계렬취(정이산정이순지-CO-정이산1,2-병이순지)공취물P(BS-co-PS).이용~1HNMR、GPC화X사선연사등방법대공취물적조성,분자량급기분자량분포、열학성능、결정성능、역학성능등진행료연구.결과표명:반응4h,즉가득도수균분자량60000이상적취(정이산정이순지-co-정이산1,2-병이순지)공취물P(BS-co-PS),분자량분포균소우2.0;수착1,2-병이순첨가량적증가,공취물적결정도강저,용점하강,단단렬신장솔명현증가,당첨가량위30%(마이분수)시,단렬신장솔체도417%,표명공취물구유량호적연전성능;소유공취물적열분해온도균재300℃이상,구유량호적열은정성.
A series of biodegradable poly(butylene succinate-co-1,2-propylene succinate)s[P(BS-co-PS)]were synthesized by solution polycondensation combined with melt polycondensation from succinic acid with 1,4-butanediol and 1,2-propanediol. The chemical structures of the products were characterized by ~1H NMR. The characters of the polymers, such as relative molecular weight, molecular weight distribution, crystallinity, thermal properties and mechanical properties, were characterized. P(BS-co-PS) copolymers with molecular weight (M_n) higher than 60000 and molecular weight distribution less than 2.0 were obtained in a reaction time of 4h. With the increase of 1,2-propanediol content, the copolymer has a decrease in crystallinity and T_m and an increase in elongation at break. When the molar content of 1,2-propanediol is 30%, the polymer has an elongation at break as high as 417%. The decomposition temperature of the obtained copolymers is all above 300 ℃.