Necking phenomenon of double-network gels

被引：256

作者：

Na, YH

Tanaka, Y

Kawauchi, Y

Furukawa, H

Sumiyoshi, T

Gong, JP ^{[1
]}

Osada, Y

机构：

[1] Hokkaido Univ, Grad Sch Sci, Sapporo, Hokkaido 060810, Japan

[2] Hokkaido Univ, Creat Res Initiat SOUSEI, Sapporo, Hokkaido 060810, Japan

[3] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido 060810, Japan

[4] JST, SORST, Sapporo, Hokkaido 060810, Japan

来源：

MACROMOLECULES | 2006年 / 39卷 / 14期

关键词：

D O I：

10.1021/ma060568d

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The role of innovative double-Network (DN) gels, that show necking phenomenon, in the study for mechanical properties of polymer networks was analyzed. It was observed that the large deformation of softened DN gels produced by necking was almost reversible. It was found that softened DN gels, produced by the necking, exhibit an excellent extensibility compared with the unusual poly-(acrylamide) (PAAm) single network (SN) gels. It was shown that the boundary zone between the necked and un-necked regions during the necking propagation of the gels becomes remarkably opaque, indicating that inhomogeneity with a characteristic size comparable with the wavelengths of visible light arises in the boundary zone. The existence of Rouse-like relaxation modes of PAAm chains indicated that the DN gels contain 'void regions' where PAAm chains behave like in solution.

引用

页码：4641 / 4645

页数：5

共 23 条

[11]

Jäger I, 2000, BIOPHYS J, V79, P1737, DOI 10.1016/S0006-3495(00)76426-5

[12] Cell-wall recovery after irreversible deformation of wood [J].