Mechanical properties of supramolecular elastomers prepared from polymer-grafted polyrotaxane

被引：55

作者：

Minato, Kosuke ^{[1
]}

Mayumi, Koichi ^{[1
]}

Maeda, Rina ^{[1
]}

Kato, Kazuaki ^{[1
]}

Yokoyama, Hideaki ^{[1
]}

Ito, Kohzo ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Frontier Sci, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778561, Japan

来源：

POLYMER | 2017年 / 128卷

基金：

日本学术振兴会;

关键词：

Supramolecule; Polyrotaxane; Cyclodextrin; Elastomer; Mechanical property; CROSS-LINKED POLYMERS; NETWORK STRUCTURE; HYDROGELS; STRENGTH; COPOLYMER; BONDS; GELS;

D O I：

10.1016/j.polymer.2017.02.090

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Supramolecular slide-ring (SR) elastomers without solvent were fabricated by cross-linking of polymer-grafted polyrotaxane in which alpha-cyclodextrins (CDs) with poly-epsilon-caprolactone (PCL) side chains are threaded on a polyethylene glycol (PEG) axial linear chain. The cross-links in the SR elastomers are capable of sliding along the backbone in response to applied stress. Mechanical properties of the SR elastomers with different cross-linking densities were compared with those of fixed cross-link (FC) elastomers prepared from PCL-grafted hydroxypropyl cellulose (HPC) to understand the influence of the slidable cross-links. The SR elastomers are found to undergo less strain-hardening at large strains and demonstrate higher strains at break than the conventional FC elastomers with the same Young's moduli. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：386 / 391

页数：6

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