FORCES BETWEEN END-ADSORBED TRIBLOCK COPOLYMER CHAINS AND A BARE MICA SURFACE IN A GOOD SOLVENT

被引：38

作者：

DAI, L ^{[1
]}

TOPRAKCIOGLU, C ^{[1
]}

机构：

[1] INST FOOD RES, NORWICH NR4 7UA, NORFOLK, ENGLAND

来源：

EUROPHYSICS LETTERS | 1991年 / 16卷 / 04期

关键词：

D O I：

10.1209/0295-5075/16/4/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the bridging effects of terminally adsorbed chains by directly measuring the forces between a single adsorbed layer of poly(ethylene oxide)-polystyrene-poly(ethylene oxide) (PEO-PS-PEO) triblock copolymer and a bare mica surface in a good solvent (toluene). We find, as the bare mica surface approaches, clearly detectable long-range attractive forces followed by an attractive minimum and monotonically increasing repulsion at smaller separations. Significant changes in the force-distance profiles with compression-decompression cycles are also observed, which strongly indicate rearrangement of the adsorbed macromolecular chains between the surfaces.

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页码：331 / 335

页数：5

相关论文

共 21 条

[11] END ABSORPTION OF POLYMER BRUSHES [J].

JOHNER, A ;

JOANNY, JF .

EUROPHYSICS LETTERS, 1991, 15 (03) :265-270

[12] LONG-RANGE ATTRACTIVE FORCES BETWEEN 2 MICA SURFACES IN AN AQUEOUS POLYMER-SOLUTION [J].

KLEIN, J ;

LUCKHAM, PF .

NATURE, 1984, 308 (5962) :836-837

[13] FORCES BETWEEN MICA SURFACES BEARING ADSORBED MACROMOLECULES IN LIQUID-MEDIA [J].

KLEIN, J .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1983, 79 :99-&

[14] FORCES BETWEEN MICA SURFACES BEARING ADSORBED HOMOPOLYMERS IN GOOD SOLVENTS - THE EFFECT OF BRIDGING AND DANGLING TAILS [J].

LUCKHAM, PF ;

KLEIN, J .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (09) :1363-1368

[15] INTERACTIONS BETWEEN SMOOTH SOLID-SURFACES IN SOLUTIONS OF ADSORBING AND NONADSORBING POLYMERS IN GOOD SOLVENT CONDITIONS [J].

LUCKHAM, PF ;

KLEIN, J .

MACROMOLECULES, 1985, 18 (04) :721-728

[16] INTERACTIONS BETWEEN ADSORBED POLYSTYRENE LAYERS IN TOLUENE HEPTANE MIXTURES - EFFECT OF SOLVENT QUALITY [J].

MARRA, J ;

HAIR, ML .

MACROMOLECULES, 1988, 21 (08) :2349-2355

[17]

Napper D H., 1983, POLYM STABILIZATION, Vvol. 3

[18] KINETICS OF BRIDGING FLOCCULATION - ROLE OF RELAXATIONS IN THE POLYMER LAYER [J].

PELSSERS, EGM ;

STUART, MAC ;

FLEER, GJ .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (09) :1355-1361

[19] INTERACTIONS BETWEEN SURFACES BEARING END-ADSORBED CHAINS IN A GOOD SOLVENT [J].

TAUNTON, HJ ;

TOPRAKCIOGLU, C ;

FETTERS, LJ ;

KLEIN, J .

MACROMOLECULES, 1990, 23 (02) :571-580

[20] FORCES BETWEEN SURFACES BEARING TERMINALLY ANCHORED POLYMER-CHAINS IN GOOD SOLVENTS [J].

TAUNTON, HJ ;

TOPRAKCIOGLU, C ;

FETTERS, LJ ;

KLEIN, J .

NATURE, 1988, 332 (6166) :712-714