Chain orientation and its effect on mobility at a rubbed surface

被引：15

作者：

Pu, Y

White, H

Rafailovich, MH

Sokolov, J ^{[1
]}

Schwarz, SA

Dhinojwala, A

Agra, DMG

Kumar, S

机构：

[1] SUNY Stony Brook, Dept Mat Sci & Engn, Stony Brook, NY 11794 USA

[2] CUNY Queens Coll, Dept Phys, Flushing, NY 11367 USA

[3] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA

[4] Kent State Univ, Kent, OH 44242 USA

来源：

MACROMOLECULES | 2001年 / 34卷 / 14期

关键词：

D O I：

10.1021/ma002039u

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 measured the tracer diffusion coefficient in PS films oriented by surface rubbing. The results show that the diffusion perpendicular to the rubbed surface is slower in oriented than in nonoriented chains. The decrease of the diffusion coefficient was correlated with the total oriented volume as determined by birefringence measurements.

引用

收藏

页码：4972 / 4977

页数：6

相关论文

共 20 条

[1] GLASS-TRANSITION TEMPERATURE OF COPOLYESTERS OF PET, PEN AND PHB AS DETERMINED BY DYNAMIC MECHANICAL ANALYSIS [J].

CHEN, D ;

ZACHMANN, HG .

POLYMER, 1991, 32 (09) :1612-1621

[2] Interface and chain confinement effects on the glass transition temperature of thin polymer films [J].

Forrest, JA ;

DalnokiVeress, K ;

Dutcher, JR .

PHYSICAL REVIEW E, 1997, 56 (05) :5705-5716

[3] Polymer mobility in thin films [J].

Frank, B ;

Gast, AP ;

Russell, TP ;

Brown, HR ;

Hawker, CJ .

MACROMOLECULES, 1996, 29 (20) :6531-6534

[4] Shear modulation force microscopy study of near surface glass transition temperatures [J].

Ge, S ;

Pu, Y ;

Zhang, W ;

Rafailovich, M ;

Sokolov, J ;

Buenviaje, C ;

Buckmaster, R ;

Overney, RM .

PHYSICAL REVIEW LETTERS, 2000, 85 (11) :2340-2343

[5] THE MECHANISM OF POLYMER ALIGNMENT OF LIQUID-CRYSTAL MATERIALS [J].

GEARY, JM ;

GOODBY, JW ;

KMETZ, AR ;

PATEL, JS .

JOURNAL OF APPLIED PHYSICS, 1987, 62 (10) :4100-4108

[6] Temperature dependence of tracer diffusion coefficients in polystyrene [J].

Green, Peter F. ;

Kramer, Edward J. .

JOURNAL OF MATERIALS RESEARCH, 1986, 1 (01) :202-204

[7] Study of the surface glass transition behaviour of amorphous polymer film by scanning-force microscopy and surface spectroscopy [J].

Kajiyama, T ;

Tanaka, K ;

Takahara, A .

POLYMER, 1998, 39 (19) :4665-4673

[8]

KAJIYAMA T, 1997, MACROMOLECULES, V30, P289

[9] SIZE-DEPENDENT DEPRESSION OF THE GLASS-TRANSITION TEMPERATURE IN POLYMER-FILMS [J].

KEDDIE, JL ;

JONES, RAL ;

CORY, RA .

EUROPHYSICS LETTERS, 1994, 27 (01) :59-64

[10] Optical retardation of rub-induced scratches in a polyimide-treated substrate [J].

Kim, JH ;

Rosenblatt, C .

APPLIED PHYSICS LETTERS, 1998, 72 (15) :1917-1919