Crystallization and melting behavior of three biodegradable poly(alkylene succinates). A comparative study
Crystallization and melting behavior of three biodegradable poly(alkylene succinates). A comparative study
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DOI：
10.1016/j.polymer.2005.10.073
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发表时间：
2005-12-12
期刊：
影响因子：
4.6
通讯作者：
Bikiaris, DN
中科院分区：
文献类型：
--
作者：
Papageorgiou, GZ;Bikiaris, DN
通过熔融缩聚合成了基于琥珀酸和相应的具有2-4个亚甲基的脂肪族二醇的聚酯。研究了具有相同分子量的样品的结晶和熔融行为。观察到这些聚合物的熔融温度的奇偶效应。聚丁二酸丙二酯的结晶速率较慢，结晶度较低。而聚丁二酸丁二醇酯的结晶速率较快，结晶度较高。等温结晶的样品的多重熔融归因于部分熔融再结晶和再熔融，如通过MTDSC测量和在快速DSC加热扫描下的观察所揭示的。PESu、PBSu和PPSu的平衡熔点分别为114、133.5和58 ℃。此外，熔化焓的相应值为180、210和140 J/g。分析了球晶生长速率，研究了PESU和PBSU的晶型转变。(c)2005爱思唯尔有限公司保留所有权利。
Polyesters based on succinic acid and respective aliphatic diols, with 2-4 methylene groups were synthesized by melt polycondensation. Crystallization and melting behaviour of samples having the same molecular weight were studied. The odd-even effect was observed for the melting temperatures of these polymers. Poly(propylene succinate) exhibited the slower crystallization rates and lower degree of crystallinity, among these polyesters. In contrast poly(butylene succinate) showed the faster crystallization rates and higher degree of crystallinity. Multiple melting of the isothermally crystallized samples was attributed to partial melting re-crystallization and re-melting, as was revealed by MTDSC measurements and observations at fast DSC heating scans. The equilibrium melting points were found to be 114, 133.5 and 58 degrees C for PESu, PBSu and PPSu respectively. Also, the corresponding values for enthalpy of fusion were 180, 210 and 140 J/g. Spherulitic growth rates were analysed and the regime transition of PESu and PBSu was studied. (c) 2005 Elsevier Ltd. All rights reserved.