Characterization of cyclic polystyrene with high molecular weight and its interdiffusion Behavior

被引：1

作者：

Kawaguchi, Daisuke ^{[1
]}

Takano, Atsushi ^{[1
]}

Matsushita, Yushu ^{[1
]}

机构：

[1] Nagoya Univ, Dept Appl Chem, Chikusa Ku, Nagoya, Aichi 4648603, Japan

来源：

KOBUNSHI RONBUNSHU | 2007年 / 64卷 / 07期

关键词：

cyclic polymer; interdiffusion; dynamic secondary ion mass spectroscopy; neutron reflectivity; liquid chromatography at critical condition; atomic force microscopy;

D O I：

10.1295/koron.64.397

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, synthesis and characterization of cyclic polystyrenes (c-PS) including the structural feature of one of the derivatives and interdiffusion of c-PS are described. The cyclic structure of poly (styrenesulfonate), which was obtained by sulfonation of c-PS, was directly confirmed by atomic force microscopic observation. The purities of c-PS, evaluated by high performance liquid chromatography, were higher than 95%. The time-dependent interfacial thickness of a cyclic polystyrene (c-hPS)/its deuterated counterpart (c-dPS) bilayer film and that of a linear polystyrene (1-hPS) /its deuterated counterpart (1-dPS) bilayer film was investigated by dynamic secondary ion mass spectrometry (DSIMS) and neutron reflectivity (NR) measurement. The diffusion constant of c-PS is significantly larger than that of the corresponding linear one. This can be explained in terms of weaker topological constraint due to the lesser entanglement of c-PS.

引用

页码：397 / 405

页数：9

共 45 条

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