SURFACE FORCE MEASUREMENTS OF POLYSTYRENE-BLOCK-POLY(ETHYLENE OXIDE) ADSORBED FROM A NONSELECTIVE SOLVENT ON MICA

被引：45

作者：

GUZONAS, D ^{[1
]}

BOILS, D ^{[1
]}

HAIR, ML ^{[1
]}

机构：

[1] XEROX RES CTR CANADA LTD,2660 SPEAKMAN DR,MISSISSAUGA L5K 2L1,ONTARIO,CANADA

来源：

MACROMOLECULES | 1991年 / 24卷 / 11期

关键词：

D O I：

10.1021/ma00011a053

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New surface force data are presented for six polystyrene-block-poly(ethylene oxide) block copolymers (PS/PEO) adsorbed onto mica from toluene. The polymers have been selected to have a low to moderate asymmetry radius ratio (beta = R(F,ps)/R(F,peo))3/5. The extended length L of the block copolymer layers has been determined and compared with data previously published on other PS/PEO copolymers adsorbed on mica. For moderate asymmetry (1 << beta << N(peo)1/2) the extended length is shown to scale as L approximately N(ps)N(peo)-1/3. Deviations are observed when the nonadsorbing block is either much larger than the adsorbing block or approximately the same size.

引用

页码：3383 / 3387

页数：5

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