Marine Biodegradation of Poly(butylene succinate) Incorporating Disulfide Bonds Triggered by a Switch Function in Response to Reductive Stimuli
Marine Biodegradation of Poly(butylene succinate) Incorporating Disulfide Bonds Triggered by a Switch Function in Response to Reductive Stimuli
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DOI：
10.1021/acsapm.3c00147
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发表时间：
2023-03
影响因子：
5
通讯作者：
Toyokazu Tsutsuba;Yuya Tachibana;Moe Shimizu;K. Kasuya
中科院分区：
文献类型：
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作者：
Toyokazu Tsutsuba;Yuya Tachibana;Moe Shimizu;K. Kasuya
尽管聚丁二酸丁二醇酯(PBSU)在堆肥和土壤中被降解，但它在海洋中不被降解。这项研究在PBSU中加入了开关功能，以释放微生物可以代谢的低摩尔质量化合物，从而在海洋环境中进行生物降解。聚(丁二酸丁二酸丁二醇酯-二硫代乙酸丁二醇酯)(PBSDT)中的二硫键在氧化还原电位较低的环境中发生还原降解，如海洋沉积物。它起到了启动PBSDT生物降解的开关作用。降解物thioglycolate-butylene-succinate-butylene-thioglycolate，具有较高的生化需氧量(BOD)可生化性。相比之下，PBSDTS在高ORP条件下具有较低的BOD可生物降解性。此外，还将高摩尔质量的PBSDT模压成薄膜，进行机械强度实验。
Although poly(butylene succinate) (PBSu) is degraded in compost and soil, it does not undergo degradation in the ocean. This study incorporated a switch function into PBSu to release low-molar-mass compounds that microorganisms can metabolize to enable biodegradation in ocean environments. The disulfide bonds in poly(butylene succinate-co-butylene dithioglycolate) (PBSDT) undergo reductive degradation in an environment with low oxidation–reduction potential (ORP), such as marine sediments. It acts as a switch to initiate PBSDT biodegradation. The reduced degradation compound, thioglycolate-butylene-succinate-butylene-thioglycolate, showed high biochemical oxygen demand (BOD) biodegradability. In contrast, PBSDTs had low BOD biodegradability under conditions of high ORP. In addition, the high-molar-mass PBSDT was molded into a film for experiments in mechanical strength.