Strain-Induced Crystallization in Tetra-Branched Poly(ethylene glycol) Hydrogels with a Common Network Structure

被引：8

作者：

Hashimoto, Kei ^{[1
,2
]}

Enoki, Takato ^{[1
]}

Liu, Chang ^{[1
]}

Li, Xiang ^{[1
]}

Sakai, Takamasa ^{[3
,4
]}

Mayumi, Koichi ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Gifu Univ, Fac Engn, Dept Chem & Biomol Sci, Gifu 5011193, Japan

[3] Univ Tokyo, Sch Engn, Dept Chem & Biotechnol, Tokyo 1138656, Japan

[4] Univ Tokyo, Sch Engn, Dept Bioengn, Tokyo 1138656, Japan

来源：

MACROMOLECULES | 2024年 / 57卷 / 04期

基金：

日本学术振兴会;

关键词：

SUPRAMOLECULAR HYDROGELS; NANOCOMPOSITE HYDROGELS; POLYMER NETWORKS; TOUGH; POLYETHERS; ELASTICITY; DESIGN; RUBBER; GELS;

D O I：

10.1021/acs.macromol.3c02038

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Strain-induced crystallization (SIC) in hydrogels is a recently discovered toughening mechanism. This mechanism necessitates highly orientated polymer chains during stretching; thus, SIC is thought to be limited to specially designed networks, such as slidable cross-link networks or tribranched networks. In this study, we report the occurrence of SIC in a model hydrogel network prepared using tetra-branched polymers, which can be classified as a network with a simple and general structure. We propose that the polymer concentration and molecular weight between the branch points are the key factors governing SIC.

引用

页码：1461 / 1468

页数：8

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