Highly stretchable, self‐adhesive, and self‐healable double network hydrogel based on alginate/polyacrylamide with tunable mechanical properties,Journal of Polymer Science

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Highly stretchable, self‐adhesive, and self‐healable double network hydrogel based on alginate/polyacrylamide with tunable mechanical properties
Journal of Polymer Science ( IF 3.9 ) Pub Date : 2020-07-13 , DOI: 10.1002/pol.20200295
Ali Pourjavadi ₁ , Maryam Tavakolizadeh ₁ , Seyed Hassan Hosseini ₂ , Navid Rabiee ₃ , Mojtaba Bagherzadeh ₃

Affiliation

A number of synthetic hydrogels suffer from low mechanical strength. Despite of the recent advances in the fabrication of tough hydrogels, it is still a great challenge to simultaneously construct high stretchability, and self‐adhesive and self‐healing capability in a hydrogel. Herein, a new type of double network hydrogel was prepared based on irreversible cross‐linking of polyacrylamide chains and Schiff‐base reversible cross‐linking between glycidyl methacrylate‐grafted ethylenediamine and oxidized sodium alginate (OSA). The combination of both cross‐linkings and their synergistic effect provided a novel hydrogel with high strength, stretchable, rapid self‐healing, and self‐adhesiveness to different material. Besides, the hydrogels with diverse OSA content could maintain their original shapes after loading–unloading tensile test. The resulting hydrogel has a great potential in various fields for supporting and load‐bearing substance.

中文翻译：

基于藻酸盐/聚丙烯酰胺的可拉伸，自粘和自修复双网络水凝胶，具有可调节的机械性能

许多合成水凝胶的机械强度低。尽管在坚韧水凝胶的制备方面取得了最新进展，但同时在水凝胶中构建高拉伸性，自粘和自愈能力仍然是一个巨大的挑战。在此，基于聚丙烯酰胺链的不可逆交联以及甲基丙烯酸缩水甘油酯接枝的乙二胺与氧化藻酸钠（OSA）之间的席夫碱可逆交联，制备了一种新型的双网络水凝胶。交联及其协同作用的结合提供了一种新型的水凝胶，对不同材料具有高强度，可拉伸，快速的自愈性和自粘性。此外，具有不同OSA含量的水凝胶在装卸拉伸试验后可以保持其原始形状。

更新日期：2020-07-13

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