NEUTRON-SCATTERING AND COMPRESSIBILITY MEASUREMENTS FOR THE STUDY OF HYDRATION EFFECTS ON POLYMERIC AQUEOUS-SOLUTIONS

被引：20

作者：

CRUPI, V ^{[1
]}

JANNELLI, MP ^{[1
]}

MAGAZU, S ^{[1
]}

MAISANO, G ^{[1
]}

MAJOLINO, D ^{[1
]}

MIGLIARDO, P ^{[1
]}

VASI, C ^{[1
]}

机构：

[1] CNR,IST TECN SPETTROSCOP,I-98166 SANT AGATA,ITALY

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS | 1994年 / 16卷 / 07期

关键词：

D O I：

10.1007/BF02456728

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The present paper reports the results of compressibility and incoherent quasi-elastic neutron scattering measurements performed on polymeric systems and on their aqueous solutions. From the compressibility data, the temperature evolution of the polymer hydration number can be derived. On the other hand, neutron data show that the translational diffusion coefficient D-T turns out to be higher in the case of ethylene glycol + water, with respect to that of pure, suggesting that the water molecules act as a structure breaker,, of the intermolecular connectivity existing into the pure. Furthermore the dynamical properties of the H2O molecules in the presence of poly(ethylene glycol) deeply differ from those in the bulk, and show that we are in the presence of entangled water.

引用

页码：809 / 816

页数：8

共 12 条

[1]

Bailey FE, 1976, POLYETHYLENE OXIDE

[2]

Bee M., 1988, QUASIELASTIC NEUTRON

[3] SINGLE-PARTICLE DYNAMICS OF HYDRATION WATER IN PROTEIN [J].