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Synthesis and mechanical strength of a novel double network nanocomposite hydrogel with core‐shell structure
Author(s) -
Fei Xiang,
Lin Jiangli,
Wang Jide,
Lin Jiantao,
Shi Xiaomei,
Xu Shimei
Publication year - 2012
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1948
Subject(s) - materials science , polyacrylic acid , nanocomposite , fourier transform infrared spectroscopy , compressive strength , composite number , self healing hydrogels , transmission electron microscopy , polymerization , composite material , chemical engineering , core (optical fiber) , scanning electron microscope , polymer chemistry , polymer , nanotechnology , engineering
A novel poly[(dimethylimino)(2‐hydroxy‐1,3‐propanedily)chloride]/Laponite/polyacrylic acid (PDMIHPC/Clay/PAA) hydrogel was synthesized by two‐step solution polymerization combining the strategies of both nanocomposite (NC) gels and double network (DN) gels. The chemical composition and core‐shell structure of the hydrogels were confirmed by Fourier transform infrared (FTIR) and transmission electron microscopy (TEM). The mechanical strength was examined by varying the reaction temperature, PDMIHPC/Clay composite dose, N,N ′‐methylenebisacrylamide (MBAM) dose and water content. When the reaction temperature was 35°C, PDMIHPC/Clay composite/AA is 1:10 and MBAM dose was 0.050 wt% (based on the weight of AA), the novel hydrogel achieved a best compressive strength of 100.05 KPa with a water content of 98.8%. Copyright © 2011 John Wiley & Sons, Ltd.