Glucose‐derived superabsorbent hydrogel materials based on mechanically‐interlocked slide‐ring and triblock copolymer topologies
Glucose‐derived superabsorbent hydrogel materials based on mechanically‐interlocked slide‐ring and triblock copolymer topologies
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DOI：
10.1002/pol.20220639
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发表时间：
2023-01
影响因子：
3.4
通讯作者：
Ching Pang;Hai Wang;Fuwu Zhang;Ami K. Patel;H. Lee;K. Wooley
中科院分区：
文献类型：
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作者：
Ching Pang;Hai Wang;Fuwu Zhang;Ami K. Patel;H. Lee;K. Wooley
设计并制造了一系列基于葡萄糖的可降解超吸收水凝胶，其具有解决与可持续性、洪水和干旱相关的问题的潜力。这些亲水性网络是通过将葡萄糖作为主要结构单元整合到环状低聚物和嵌段聚合物中来构建的，这些环状低聚物和嵌段聚合物被组合成机械互锁的滑环交联材料。滑环α-环糊精/聚的交联具有酸官能化ABA三嵌段共聚物的（乙二醇）型聚轮烷，所述酸官能化ABA三嵌段共聚物由巯基丙酸官能化聚（葡萄糖碳酸酯（乙基炔丙基碳酸酯））-B-聚（乙二醇）-B-巯基丙酸官能化聚（葡萄糖碳酸酯（乙基炔丙基碳酸酯）），通过建立化学不稳定的酯键得到可降解的超吸收性水凝胶，除了聚合物前体的糖苷和碳酸酯基团之外。重点是开发基本的合成设计策略，以获得高性能的高吸水性水凝胶，这些水凝胶可以表现为坚固的材料，这些材料来源于天然成分并具有水解降解性，努力优化组成，结构和拓扑结构，导致吸水能力>30×质量。组成-结构-拓扑-形态对性能的影响作为PEG主链长度、α-环糊精覆盖度和预凝胶溶液浓度变化的函数的研究表明，滑环聚合物和三嵌段共聚物网络具有高吸水性、可调机械性能和可持续性，由可再生天然产物和内置降解性构成。
A series of glucose‐based degradable superabsorbent hydrogels with potential to tackle issues associated with sustainability, flooding, and drought has been designed and fabricated. These hydrophilic networks were constructed through integrating glucose as a primary building block –into cyclic oligomers and block polymers, which were combined into mechanically‐interlocked slide‐ring crosslinked materials. Crosslinking of slide ring α‐cyclodextrin/poly(ethylene glycol)‐type polyrotaxanes with acid‐functionalized ABA triblock copolymers comprised of mercaptopropionic acid‐functionalized poly(glucose carbonate (ethyl propargyl carbonate))‐b‐poly(ethylene glycol)‐b‐mercaptopropionic acid‐functionalized poly(glucose carbonate (ethyl propargyl carbonate)), afforded degradable superabsorbent hydrogels through establishment of chemically‐labile ester linkages, in addition to glycosidic and carbonate groups of the polymer precursors. With an emphasis on development of fundamental synthetic design strategies to achieve high‐performance superabsorbent hydrogels that could behave as robust materials, which are derived from natural components and exhibit hydrolytic degradability, effort went into optimization of the composition, structure, and topology leading to water uptake capacities >30× by mass. Investigations of composition‐structure‐topology‐morphology effects on properties as a function of variations of PEG main chain length, degree of α‐cyclodextrin coverage, and concentration of pre‐gel solution, indicated that the slide‐ring polymer and triblock copolymer networks feature high water uptake, tunable mechanical properties, and sustainability with construction from renewable natural products and in‐built degradability.