One-step radiation synthesis of agarose/polyacrylamide double-network hydrogel with extremely excellent mechanical properties

被引：71
作者：
Lin, Tingrui [1 ]
Bai, Qingwen [2 ]
Peng, Jing [1 ]
Xu, Ling [3 ]
Li, Jiuqiang [1 ]
Zhai, Maolin [1 ]
机构：
[1] Peking Univ, Beijing Natl Lab Mol Sci, Radiochem & Radiat Chem Key Lab Fundamental Sci, Key Lab Polymer Chem & Phys,Minist Educ,Coll Chem, Beijing 100871, Peoples R China
[2] Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China
[3] Xiamen Univ, State Key Lab Mol Vaccinol & Mol Diagnost, Sch Publ Hlth, Xiamen 161102, Fujian, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2018年 / 200卷
基金：
中国国家自然科学基金;
关键词：
Radiation synthesis; Agarose/polyacrylamide; Hydrogels; Double-network; Mechanical properties; Energy dissipation; NANOCOMPOSITE HYDROGELS; CROSS-LINKING; HIGH-TOUGHNESS; STRENGTH; GEL; FRACTURE; POLYMERIZATION; ROBUST;
D O I：
10.1016/j.carbpol.2018.07.070
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A facile one-step radiation method is first developed to synthesize agarose/polyacrylamide (AG/PAM) double-network (DN) hydrogel. Compared to other synthetic methods of DN hydrogels, our synthesis method endows the resultant AG/PAM DN hydrogel with not only top-level tensile properties with a tensile strength of 1263 +/- 59 kPa and an elongation at break of 3406 +/- 143%, but also highest compression properties with a compression strength of 140 +/- 3 MPa and a fracture compression strain of above 99.9%. An expanding-necking phenomenon during compression process of AG/PAM DN hydrogel were observed. We propose a chain pushing-in model to interpret the energy dissipation mechanism accounting for the super-compressibility of AG/PAM DN hydrogel. This novel radiation synthesis strategy provides an insight into the development of DN hydrogels with extremely excellent mechanical properties.
引用
收藏
页码：72 / 81
页数：10
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