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
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
收藏
页码:397 / 405
页数:9
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