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Tough superabsorbent poly(acrylic acid) nanocomposite physical hydrogels fabricated by a dually cross-linked single network strategy 被引量:6
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作者 Ming Zhong Fu-Kuan Shi +2 位作者 Yi-Tao Liu Xiao-Ying Liu Xu-Ming Xie 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第3期312-316,共5页
In this work, we report a facile method for the preparation of tough and highly stretchable physical hydrogels by dual cross-linking composed of vinyl-hybrid silica nanoparticles(VSNPs) as multivalent covalent cross... In this work, we report a facile method for the preparation of tough and highly stretchable physical hydrogels by dual cross-linking composed of vinyl-hybrid silica nanoparticles(VSNPs) as multivalent covalent cross-linking and hydrogen bonding as physical cross-linking. Poly(acrylic acid) nanocomposite physical hydrogels(NCP gels) are obtained without adding any organic chemical cross-linkers. When the content of VSNPs is 0.7 wt%(relative to the monomer), the NCP gels exhibit good mechanical properties(fracture strength = 370 k Pa, elongation at break = 2200%) and a high swelling capacity in both deionized water(2300 g/g) and saline(220 g/g). Meanwhile, the NCP gels have good recovery ability. 展开更多
关键词 Nanocomposite physical hydrogels Vinyl hybrid silica nanoparticles Swelling capacity Fracture strength Stretchability recovery ability
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