NEUTRON-SCATTERING FROM POLYMER BLENDS UNDER PRESSURE

被引：6

作者：

HAMMOUDA, B ^{[1
]}

BENMOUNA, M ^{[1
]}

机构：

[1] TULANE UNIV, DEPT PHYS, NEW ORLEANS, LA 70118 USA

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 1995年 / 33卷 / 17期

关键词：

EQUATION-OF-STATE; POLYSTYRENE; POLYVINYLMETHYLETHER; PRESSURE EFFECTS; RANDOM PHASE APPROXIMATION; SMALL-ANGLE NEUTRON SCATTERING;

D O I：

10.1002/polb.1995.090331707

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A procedure is used to analyze small-angle neutron-scattering (SANS) data from a pressurized polymer blend mixture (deuterated polystyrene/polyvinylmethylether). The Lattice-Fluid (LF) equation-of-state model is used along with a compressible random phase approximation (RPA) in order to obtain free volume fractions and intermonomer interaction potentials. Solving the two sets of equations (LF and RPA) self-consistently within the fitting procedure to the SANS data provides an improvement over the familiar incompressible RPA model. In this approach, the free volume fraction is the main varying pa rameter. Intermonomer interaction potentials were found to depend on pressure (weakly) and temperature (linearly). (C) 1995 John Wiley & Sons, Inc.

引用

页码：2359 / 2364

页数：6

共 17 条

[1] DYNAMICS OF COPOLYMER AND HOMOPOLYMER MIXTURES IN BULK AND IN SOLUTION VIA THE RANDOM PHASE APPROXIMATION [J].