Piątek-Hnat Marta, Sładkiewicz Paulina, Bomba Kuba, Pęksiński Jakub, Kozłowska Agnieszka, Sośnicki Jacek G, Idzik Tomasz J
Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Piastów Ave. 42, 71-065 Szczecin, Poland.
Faculty of Electrical Engineering, West Pomeranian University of Technology, Sikorskiego Ave. 37, 71-313 Szczecin, Poland.
Polymers (Basel). 2020 Jul 3;12(7):1493. doi: 10.3390/polym12071493.
Determining the cross-linking time resulting in the best achievable properties in elastomers is a very important factor when considering their mass production. In this paper, five biodegradable polymers were synthesized-poly(xylitol-dicarboxylate-co-butylene dicarboxylate) polymers, based on xylitol obtained from renewable sources. Five different dicarboxylic acids with even numbers of carbon atoms in the aliphatic chain were used: succinic acid, adipic acid, suberic acid, sebacic acid, and dodecanedioic acid. Samples were taken directly after polycondensation (prepolymer samples) and at different stages of the cross-linking process. Physiochemical properties were determined by a gel fraction test, differential scanning calorimetry (DSC), Fourier-transform infrared spectroscopy (FTIR), quasi-static tensile tests, nuclear magnetic resonance spectroscopy (H NMR and C NMR), and an in vitro biodegradation test. The best cross-linking time was determined to be 288h. Properties and degradation time can be tailored for specific applications by adjusting the dicarboxylic acid chain length.
在考虑弹性体的大规模生产时，确定能使弹性体获得最佳性能的交联时间是一个非常重要的因素。本文合成了五种可生物降解的聚合物——基于从可再生资源中获得的木糖醇的聚（木糖醇 - 二羧酸 - 共 - 丁烯二羧酸）聚合物。使用了五种脂肪链中碳原子数为偶数的不同二元羧酸：琥珀酸、己二酸、辛二酸、癸二酸和十二烷二酸。在缩聚后直接取样（预聚物样品）以及在交联过程的不同阶段取样。通过凝胶分数测试、差示扫描量热法（DSC）、傅里叶变换红外光谱法（FTIR）、准静态拉伸试验、核磁共振光谱法（H NMR和C NMR）以及体外生物降解试验来测定物理化学性质。确定最佳交联时间为288小时。通过调整二元羧酸链长，可以针对特定应用定制性能和降解时间。
