Hydrogels with Dual Relaxation and Two-Step Gel-Sol Transition from Heterotelechelic Polymers

被引：37

作者：

Brassinne, Jeremy ^{[1
]}

Stevens, Arnaud M. ^{[1
]}

Van Ruymbeke, Evelyne ^{[1
]}

Gohy, Jean-Francois ^{[1
]}

Fustin, Charles-Andre ^{[1
]}

机构：

[1] Catholic Univ Louvain, Bio & Soft Matter Div BSMA, Inst Condensed Matter & Nanosci IMCN, B-1348 Louvain, Belgium

来源：

MACROMOLECULES | 2013年 / 46卷 / 22期

关键词：

ASSOCIATING POLYMERS; SUPRAMOLECULAR CHEMISTRY; RHEOLOGICAL BEHAVIOR; NONLINEAR RHEOLOGY; MICELLAR-SOLUTIONS; COPOLYMERS; COMPLEXES; DYNAMICS; METALS; PHASE;

D O I：

10.1021/ma401657f

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理];

摘要：

Associating polymers constitute a fascinating class of materials because of the richness in their theological behavior. Their rheology is mainly dictated by the nature and intrinsic stabilities of the transient associations. Here, we report on the combination of hydrophobic interaction and coordinative bonds through the synthesis of heterotelechelic water-soluble polymers. The characteristics of supramolecular cross-links allow the construction of mechano-responsive hydrogels showing an outstanding "two-step" gel-to-sol transition. Contributions of both supramolecular cross-links are investigated by rotational rheometry while varying the hydrophobic segment length and the type of metal. In this respect, an unprecedented control is gained over the response of multicomponent networks.

引用

页码：9134 / 9143

页数：10

共 53 条

[1]

THE RHEOLOGY OF SOLUTIONS OF ASSOCIATING POLYMERS - COMPARISON OF EXPERIMENTAL BEHAVIOR WITH TRANSIENT NETWORK THEORY [J].