Molecular characterization and interdiffusion of ring-shaped polystyrenes and their derivatives

Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Preparation and characterization of cyclic polystyrenes (c-PS), direct structural observation of one of the derivatives and interdiffusion of c-PS were studied. Cyclic structure of a poly(styrenesulfonate), which was obtained by sulfonation of a c-PS, was directly proved by atomic force microscopic observation. Purities of c-PS were evaluated by high performance liquid chromatography and their values were determined to be higher than 95%. Time evolution of interfacial thicknesses between a cyclic polystyrene (c-hPS) / its deuterated counterpart (c-dPS) and a linear polystyrene (l-hPS) / its deuterated counterpart (l-dPS) bilayer films was investigated by dynamic secondary ion mass spectrometry (DSIMS) and neutron reflectometry (NR). Diffusion coefficient of c-PS is significantly larger than that of the corresponding linear one. This can be explained in terms of weaker topological constraint coming from the less entanglement nature for the c-PS than for the l-PS.

Original languageEnglish
Title of host publicationAdvances and Trends in Engineering Materials and their Applications - Proceedings of AES-ATEMA 1st International Conference
Pages263-269
Number of pages7
Publication statusPublished - Dec 1 2007
Externally publishedYes
Event1st International Conference on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2007 - Montreal, QC, Canada
Duration: Aug 6 2007Aug 10 2007

Publication series

NameAES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications
ISSN (Print)1924-3642

Other

Other1st International Conference on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2007
CountryCanada
CityMontreal, QC
Period8/6/078/10/07

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Materials Science(all)

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