COLLAPSE-STRETCHING TRANSITION FOR POLYMER BRUSHES - PREFERENTIAL SOLVATION

被引：90

作者：

AUROY, P

AUVRAY, L

机构：

[1] Laboratoire Léon Brillouin, CEA-CNRS, CEN Saclay, 91191 Cedex, Gif Sur Yvette

来源：

MACROMOLECULES | 1992年 / 25卷 / 16期

关键词：

D O I：

10.1021/ma00042a014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We have investigated by small-angle neutron scattering techniques the collapse-stretching transition of grafted poly(dimethylsiloxane) chains. Two ways have been used for inducing this transition: modifying the chemical composition in a binary mixture or changing the temperature in a given solvent around the theta-point. The first method reveals a spectacular preferential solvation effect, provided that the grafting density is high enough. The second method is more graduate: the thickness of the interface is a linear function of temperature in the range we have investigated.

引用

页码：4134 / 4141

页数：8

共 25 条

[11] COWIE JMG, 1968, J POLYMER SCI C, V23, P267
[12] CONFORMATIONS OF POLYMERS ATTACHED TO AN INTERFACE
DEGENNES, PG
[J]. MACROMOLECULES, 1980, 13 (05) : 1069 - 1075
[13] DESCLOISEAUX J, 1987, POLYM SOLUTION LEUR
[14] ON EXISTENCE OF 2 THETA POINTS FOR POLYMERS IN BINARY MIXTURES
DONDOS, A
BENOIT, H
[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER LETTERS, 1969, 7 (5PB): : 335 - &
[15] Flory P. J., 1953, PRINCIPLES POLYM CHE
[16] GOMEZANTON MR, 1988, MAKROMOL CHEM, V189, P251
[17] COLLAPSE OF GRAFTED CHAINS IN POOR SOLVENTS
HALPERIN, A
[J]. JOURNAL DE PHYSIQUE, 1988, 49 (03): : 547 - 550
[18] HERT M, 1974, MAKROMOL CHEM, V175, P2149
[19] HOFFMAN A, 1991, MRS BULL, P42
[20] LAPP A, 1985, MAKROMOL CHEM-RAPID, V6, P591

← 1 2 3 →