Surfactant curvilinear diffusion in giant wormlike micelles

被引：48

作者：

Angelico, R

Olsson, U

Palazzo, G

Ceglie, A

机构：

[1] Lund Univ, Ctr Chem & Chem Engn, S-22100 Lund, Sweden

[2] Univ Bari, Dipartmento Chim, I-70126 Bari, Italy

[3] Univ Molise, DISTAAM, I-86100 Campobasso, Italy

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.81.2823

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first experimental measurements of surfactant curvilinear diffusion in giant wormlike micelles. The surfactant diffusion was monitored by pulsed field gradient NMR for various observation times t ranging from 0.020 to 1.5 s. The surfactant mean-square displacement was found to scale as t(1/2). A model of lateral diffusion along wormlike micellar aggregates with Gaussian statistics is found to describe the echo attenuation well. This type of diffusion is analogous to polymer segment diffusion in the tube-reptation model.

引用

页码：2823 / 2826

页数：4

共 24 条

[1] Water diffusion and headgroup mobility in polymer-like reverse micelles: Evidence of a sphere-to-rod-to-sphere transition
Angelico, R
Palazzo, G
Colafemmina, G
Cirkel, PA
Giustini, M
Ceglie, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (16): : 2883 - 2889
[2] ANGELICO R, IN PRESS
[3] Callaghan P.T., 1991, Principles of nuclear magnetic resonance microscopy, V1st
[4] REPTATION OF LIVING POLYMERS - DYNAMICS OF ENTANGLED POLYMERS IN THE PRESENCE OF REVERSIBLE CHAIN-SCISSION REACTIONS
CATES, ME
[J]. MACROMOLECULES, 1987, 20 (09) : 2289 - 2296
[5] DYNAMICS OF LIVING POLYMERS AND FLEXIBLE SURFACTANT MICELLES - SCALING LAWS FOR DILUTION
CATES, ME
[J]. JOURNAL DE PHYSIQUE, 1988, 49 (09): : 1593 - 1600
[6] DAOUD M, 1975, MACROMOLECULES, V8, P804, DOI 10.1021/ma60048a024
[7] de Gennes P.G., 1979, SCALING CONCEPTS POL
[8] REPTATION OF A POLYMER CHAIN IN PRESENCE OF FIXED OBSTACLES
DEGENNES, PG
[J]. JOURNAL OF CHEMICAL PHYSICS, 1971, 55 (02) : 572 - +
[9] DOI M, 1986, THEORY POLYM PHYSICS
[10] THEORY OF FIELD-GRADIENT NMR DIFFUSOMETRY OF POLYMER SEGMENT DISPLACEMENTS IN THE TUBE-REPTATION MODEL
FATKULLIN, N
KIMMICH, R
[J]. PHYSICAL REVIEW E, 1995, 52 (03) : 3273 - 3276

← 1 2 3 →