Do spherical polyelectrolyte brushes interdigitate?

被引：26

作者：

Korobko, AV ^{[1
]}

Jesse, W

Egelhaaf, SU

Lapp, A

van der Maarel, JRC

机构：

[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands

[2] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland

[3] Univ Edinburgh, Sch Chem, Edinburgh EH9 3JZ, Midlothian, Scotland

[4] CEA, CNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[5] Natl Univ Singapore, Dept Phys, Singapore 119260, Singapore

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.93.177801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The structure of spherical micelles of the diblock copolymer poly(styrene-block-acrylic acid) in water was investigated with small angle neutron scattering and contrast matching. We have monitored intermicelle correlation and the extension of the polyelectrolyte chains in the coronal layer through the overlap concentration. Irrespective of ionic strength, the corona shrinks with increasing packing fraction. Furthermore, at high charge and minimal screening conditions, the corona layers interpenetrate once the volume fraction exceeds the critical value 0.53+/-0.02.

引用

页码：177801 / 1

页数：4

共 19 条

[1] Charged polymer brushes: Counterion incorporation and scaling relations [J].

Ahrens, H ;

Forster, S ;

Helm, CA .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4172-4175

[2] PERCUS-YEVICK EQUATION FOR HARD SPHERES WITH SURFACE ADHESION [J].

BAXTER, RJ .

JOURNAL OF CHEMICAL PHYSICS, 1968, 49 (06) :2770-&

[3] Water-dispersed lamellar phases of symmetric poly(styrene)-block-poly(acrylic acid) diblock copolymers: Model systems for flat dense polyelectrolyte brushes [J].

Bendejacq, D ;

Ponsinet, V ;

Joanicot, M .

EUROPEAN PHYSICAL JOURNAL E, 2004, 13 (01) :3-13

[4] Block copolymer assembly to control fluid rheology [J].

Bhatia, SR ;

Mourchid, A ;

Joanicot, M .

CURRENT OPINION IN COLLOID & INTERFACE SCIENCE, 2001, 6 (5-6) :471-478

[5] Effects of ionic strength and charge annealing in star-branched polyelectrolytes [J].

Borisov, OV ;

Zhulina, EB .

EUROPEAN PHYSICAL JOURNAL B, 1998, 4 (02) :205-217

[6] STAR SHAPED POLYMERS - A MODEL FOR THE CONFORMATION AND ITS CONCENTRATION-DEPENDENCE [J].

DAOUD, M ;

COTTON, JP .

JOURNAL DE PHYSIQUE, 1982, 43 (03) :531-538

[7] Structure of polyelectrolyte block copolymer micelles [J].

Förster, S ;

Hermsdorf, N ;

Böttcher, C ;

Lindner, P .

MACROMOLECULES, 2002, 35 (10) :4096-4105

[8] Counterion distribution in the coronal layer of polyelectrolyte diblock copolymer micelles [J].

Groenewegen, W ;

Lapp, A ;

Egelhaaf, SU ;

van der Maarel, JRC .

MACROMOLECULES, 2000, 33 (11) :4080-4086

[9] Neutron scattering estimates of the effect of charge on the micelle structure in aqueous polyelectrolyte diblock copolymer solutions [J].

Groenewegen, W ;

Egelhaaf, SU ;

Lapp, A ;

van der Maarel, JRC .

MACROMOLECULES, 2000, 33 (09) :3283-3293

[10] Rodlike behavior of polyelectrolyte brushes [J].

Guenoun, P ;

Muller, F ;

Delsanti, M ;

Auvray, L ;

Chen, YJ ;

Mays, JW ;

Tirrell, M .

PHYSICAL REVIEW LETTERS, 1998, 81 (18) :3872-3875

← 1 2 →