Interphase of a Polymer at a Solid Interface

被引：23

作者：

Butt, H. J. ^{[2
]}

Duran, H. ^{[2
,5
]}

Egger, W. ^{[6
]}

Faupel, F. ^{[1
]}

Harmandaris, V. ^{[2
,3
]}

Harms, S. ^{[1
]}

Johnston, K. ^{[2
,4
]}

Kremer, K. ^{[2
]}

Lin, F. Y. ^{[2
]}

Lue, L. ^{[4
]}

Ohrt, C. ^{[1
]}

Raetzke, K. ^{[1
]}

Ravelli, L. ^{[6
]}

Steffen, W. ^{[2
]}

Vianna, S. D. B. ^{[2
]}

机构：

[1] Univ Kiel, Inst Mat Sci, Chair Multicomponent Mat, D-24143 Kiel, Germany

[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany

[3] Univ Crete, Dept Appl Math, Iraklion, Greece

[4] Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Lanark, Scotland

[5] TOBB Univ Econ & Technol, Dept Mat Sci & Nanotechnol Engn, TR-06560 Ankara, Turkey

[6] Univ Bundeswehr Munchen, Fak Luft & Raumfahrttech, Inst Angew Phys & Messtech LRT2, D-85577 Neubiberg, Germany

来源：

MACROMOLECULES | 2014年 / 47卷 / 23期

关键词：

DENSITY-FUNCTIONAL THEORY; FREE-VOLUME; MELT/SOLID INTERFACE; GLASS-TRANSITION; THIN-FILM; DYNAMICS; SIMULATION; LIFETIME; SURFACES;

D O I：

10.1021/ma501747j

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Atomistic molecular dynamics simulations of a chemically realistic model of atactic short-chain polystyrene between gold surfaces (111) and positron annihilation lifetime spectroscopy experiments on similar polystyrene thin films on gold were performed. Results from both approaches show that the free volume voids in the film have a slightly smaller average size than in bulk polystyrene. In agreement to that the existence of an interphase of higher density at the polymersolid substrate interface is shown both by the simulation as well as in the experiment. The average shape of the voids is similar in the bulk and the film.

引用

页码：8459 / 8465

页数：7

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