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Ultrastretchable, Tough, and Notch‐Insensitive Hydrogels Formed with Spherical Polymer Brush Crosslinker
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-09-29 , DOI: 10.1002/marc.201700455 Rui Zhang 1 , Lei Wang 1 , Zheqi Shen 1 , Min Li 1 , Xuhong Guo 1 , Yuan Yao 2
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2017-09-29 , DOI: 10.1002/marc.201700455 Rui Zhang 1 , Lei Wang 1 , Zheqi Shen 1 , Min Li 1 , Xuhong Guo 1 , Yuan Yao 2
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Spherical polymer brushes, poly(acrylic acid) (PAA)‐grafted polystyrene nanoparticle (PAA@PS), are employed as the macro‐crosslinker to prepare PAA hydrogels. Benefitting from the innumerable hydrogen bonds between highly entangled PAA chains both in bulk and on the polymer brush, the PAA/PAA@PS hydrogels combine desirable stretchability, toughness, and notch‐insensitivity. The uniaxial tensile tests show a very high fracture elongation up to 9.1 × 103% while the fracture toughness reaches 3.0 MJ m−3 and the maximum swelling ratio of the hydrogel can be 2.0 × 103 as well. After being loaded with silver nanoparticles, the PAA/PAA@PS hydrogels are employed as a recyclable catalyst successfully.
中文翻译：
与球形聚合物刷交联剂形成的可超拉伸，坚韧且不刻痕的水凝胶
球形聚合物刷，聚丙烯酸（PAA）接枝的聚苯乙烯纳米颗粒（PAA @ PS）被用作大分子交联剂，以制备PAA水凝胶。得益于大量缠结的PAA链在本体和聚合物刷上无数的氢键，PAA / PAA @ PS水凝胶结合了理想的可拉伸性，韧性和缺口敏感性。单轴拉伸试验显示出非常高的断裂伸长率，高达9.1×10 3％，而断裂韧性达到3.0 MJ m -3，水凝胶的最大溶胀率也可以为2.0×10 3。负载银纳米颗粒后，PAA / PAA @ PS水凝胶被成功用作可循环利用的催化剂。
更新日期：2017-09-29
中文翻译：
与球形聚合物刷交联剂形成的可超拉伸，坚韧且不刻痕的水凝胶
球形聚合物刷，聚丙烯酸（PAA）接枝的聚苯乙烯纳米颗粒（PAA @ PS）被用作大分子交联剂，以制备PAA水凝胶。得益于大量缠结的PAA链在本体和聚合物刷上无数的氢键，PAA / PAA @ PS水凝胶结合了理想的可拉伸性，韧性和缺口敏感性。单轴拉伸试验显示出非常高的断裂伸长率，高达9.1×10 3％，而断裂韧性达到3.0 MJ m -3，水凝胶的最大溶胀率也可以为2.0×10 3。负载银纳米颗粒后，PAA / PAA @ PS水凝胶被成功用作可循环利用的催化剂。
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