Phase-Separation-Induced Anomalous Stiffening, Toughening, and Self-Healing of Polyacrylamide Gels

被引：162
|
作者：
Sato, Koshiro [1 ]
Nakajima, Tasuku [2 ]
Hisamatsu, Toshiyuki [1 ]
Nonoyama, Takayuki [2 ]
Kurokawa, Takayuki [2 ]
Gong, Jian Ping [2 ]
机构：
[1] Hokkaido Univ, Grad Sch Life Sci, Lab Soft & Wet Matter, Kita Ku, Sapporo, Hokkaido 0600810, Japan
[2] Hokkaido Univ, Fac Adv Life Sci, Lab Soft & Wet Matter, Kita Ku, Sapporo, Hokkaido 0600810, Japan
来源：
ADVANCED MATERIALS | 2015年 / 27卷 / 43期
基金：
日本学术振兴会;
关键词：
HYDROGELS; STIFFNESS; STRENGTH; FRACTURE; MODEL;
D O I：
10.1002/adma.201502967
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Novel, tough, strong, and self-healable polyacrylamide (PAAm) gels are fabricated by inducing an appropriate phase-separation structure using a poor solvent. The phase separation induces a gel-glass-like transition of the PAAm gels, providing the gels an anomalously high modulus (211 MPa), fracture stress (7.13 MPa), and fracture energy (4.16 x 10(4) J m(-2)), while keeping a high solvent content (approximate to 60 vol%).
引用
收藏
页码：6990 / +
页数：10
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