Study on preparation and properties of highly elastic dual-network hydrogels
FAN Kai-qi
JIA Cai-jing
ZHAO Shuai
YUE Fan
HAN Guang-lu
WANG Li-xia
YIN Zhi-gang
SONG Jian
Abstract：Dual-network hydrogels with high elasticity were prepared by oxidation/reduction (Fe2+/ammonium persulfate) initiation system using acrylic acid and agar as the main raw materials.The optimum conditions were obtained as follows:agar mass concentration was 1％,masacrylic acid concentration was 30％ (mass fraction),ammonium persulfate concentration was 1.5 ％ (mass fraction),N,N'-Methylenebisacrylamide concentration was 0.3％ (mass fraction),and ferrous sulfate concentration was 0.050％ (mass fraction).Through the analysis of the mechanical properties of the gel,it was found that the tensile elongation of the gel was 225％ and the compressive capacity was 4 MPa,exhibiting good stretch and compression performance.The microstructure of the hydrogel were analyzed by IR using SEM.The results showed that the hydrogel has a fiber network structure with a fiber diameter of about 100 nm,there was intermolecular hydrogen bonding between agar and polyacrylic acid and the metal complexation between Fe3+ and polyacrylic acid molecules.
Keywords：dual-network hydrogelsoxidation/reduction initiationacrylic acidhigh elasticity gel
Publication Date：2017-11-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 35-42 )