Toughening hydrogels by immersing with oppositely charged polymers
作者： Yang Li , Xin Peng , Di Zhao , Shengjie Shi , Changcheng He
DOI: 10.1002/POLB.24233
关键词:
摘要: A very simple yet novel strategy to significantly enhance the mechanical properties of hydrogels is reported. Poly(acrylic acid) (PAA) with aligned macroporous channels are immersed in aqueous solutions poly(dimethyl diallyl ammonium chloride) (PDMDAAC). Strong electrostatic interactions formed between anionic PAA and cationic PDMDAAC chains. In resultant PAA/PDMDAAC hybrid hydrogels, mass ratio about 0.2 uniformly distributed throughout gels. The largely enhanced comparison original hydrogels. exhibit high tensile strengths (0.38–1.73 MPa), elastic moduli (0.21–1.59 MPa) toughness (up 3.0 MJ/m3), several more than 10 times those corresponding addition, also show excellent rapid shape recovery ability both air deionized water. © 2016 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Phys. 2016, 54, 2432–2441
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