Diffusion of water in nano-porous polyamide membranes: Quasielastic neutron scattering study

被引：8

作者：

Sharma, V. K. ^{[1
]}

Mitra, S. ^{[1
]}

Singh, P. ^{[2
]}

Juranyi, F. ^{[3
,4
]}

Mukhopadhyay, R. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

[2] Cent Salt & Marine Chem Res Inst, Bhavnagar 364002, Gujarat, India

[3] ETHZ, Neutron Scattering Lab, Villigen, Switzerland

[4] PSI, Villigen, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2010年 / 189卷 / 01期

关键词：

REVERSE-OSMOSIS; CONFINED SPACE; DYNAMICS; MOLECULES; MOTIONS;

D O I：

10.1140/epjst/e2010-01325-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dynamics of water sorbed in a reverse osmosis polyamide membrane (ROPM) as studied by quasielastic neutron scattering (QENS) is reported here. The trimesoylchloride-m-phenylene diamine based ROPM is synthesized by interfacial polymerization technique. QENS data indicates that translational motion of water confined in ROPM gets modified compared to bulk water whereas rotational motion remains unaltered. Translational motion of water in ROPM is found to follow random jump diffusion with lower diffusivity compared to bulk water. Translational diffusivity does not show the Arrhenius behaviour.

引用

页码：217 / 221

页数：5

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