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

被引：187

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

页码：6990 / +

页数：10

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