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Synthesis and characterization of biodegradable and photocrosslinkable multi-block poly(ether-ester): Molecular-weight and component of the polyethylene glycol segment dependence
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-09-22 , DOI: 10.1002/app.54693 Chaoyi Cai 1 , Zhifan Chen 1 , Shufen Ye 1 , Rong Zhang 1 , Xiaodi Pan 2 , Rong Yang 1 , Jinchun Li 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2023-09-22 , DOI: 10.1002/app.54693 Chaoyi Cai 1 , Zhifan Chen 1 , Shufen Ye 1 , Rong Zhang 1 , Xiaodi Pan 2 , Rong Yang 1 , Jinchun Li 1
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This work synthesized a series of biodegradable thermoplastic elastomer PBSFG via an esterification polycondensation reaction. The influence of the soft segment PEG molecular weight and component on the thermal behavior, mechanical property, and degradation performance of PBSFG were investigated. The results showed that the PEG component plays a major part in the properties of PBSFG. Upon reaching a PEG component concentration of 40% within PBSFG, the yielding phenomenon becomes imperceptible on the stress–strain curves, signifying the onset of a plastic-to-elastomer transition. In the case of PBSFG40-6k, a remarkable tensile strength of 23.5 MPa and an elongation at break measuring 576% were achieved, thereby displaying tensile properties on par with those of PBAT. Thanks to the unsaturated structure, the mechanical properties of PBSFG can be enhanced by UV irradiation. Finally, Candida cylindracea lipase catalytic degradation experiments showed that PBSFG is a biodegradable polyester, which is beneficial in reducing environmental plastic pollution.
中文翻译：
可生物降解和可光交联的多嵌段聚醚酯的合成和表征：聚乙二醇链段的分子量和成分依赖性
该工作通过酯化缩聚反应合成了一系列可生物降解的热塑性弹性体PBSFG。研究了软链段PEG分子量和组分对PBSFG热行为、力学性能和降解性能的影响。结果表明，PEG成分在PBSFG的性能中起主要作用。当 PBSFG 中 PEG 成分浓度达到 40% 时，应力应变曲线上的屈服现象变得难以察觉，这意味着塑料向弹性体转变的开始。PBSFG40-6k 的拉伸强度达到 23.5 MPa，断裂伸长率为 576%，显示出与 PBAT 相当的拉伸性能。由于具有不饱和结构，PBSFG 的机械性能可以通过紫外线照射得到增强。最后，Candida cylindracea脂肪酶催化降解实验表明PBSFG是一种可生物降解的聚酯，有利于减少环境塑料污染。
更新日期：2023-09-22
中文翻译：
可生物降解和可光交联的多嵌段聚醚酯的合成和表征：聚乙二醇链段的分子量和成分依赖性
该工作通过酯化缩聚反应合成了一系列可生物降解的热塑性弹性体PBSFG。研究了软链段PEG分子量和组分对PBSFG热行为、力学性能和降解性能的影响。结果表明，PEG成分在PBSFG的性能中起主要作用。当 PBSFG 中 PEG 成分浓度达到 40% 时，应力应变曲线上的屈服现象变得难以察觉，这意味着塑料向弹性体转变的开始。PBSFG40-6k 的拉伸强度达到 23.5 MPa，断裂伸长率为 576%，显示出与 PBAT 相当的拉伸性能。由于具有不饱和结构，PBSFG 的机械性能可以通过紫外线照射得到增强。最后，Candida cylindracea脂肪酶催化降解实验表明PBSFG是一种可生物降解的聚酯，有利于减少环境塑料污染。
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