Interfacial structure of strong-segregated block copolymer thin film at high temperature

Naoya Torikai, Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita, Robert Dalgliesh, Sean Langridge

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

Abstract

Interfacial structure of strong-segregated poly(styrene-d 8)-block-poly(2-vinylpyridine) diblock copolymer thin films with lamellar microdomain was investigated by neutron reflectivity (NR) measurement at different temperatures above Tg of the component polymer. The thin film specimens with different film thicknesses were prepared by spin-coating method, and then annealed at 170°C in vacuum during more than one week before NR measurement. The observed specular reflectivity profiles exhibit several Bragg peaks up to high order at 170°C, implying that lamellar structure keeps highly-ordered state and preferential orientation along the direction parallel to the film surface even at high temperature above T g. It was found that lamellar domain spacing (D) is increased with increasing temperature for a thinner film, while D is decreased for a thicker film. Further, it was found by a conventional model-fitting analysis of specular reflectivity that apparent interfacial thickness evaluated tends to be somewhat increased at high temperature.

Original languageEnglish
Title of host publication55th SPSJ Symposium on Macromolecules
Pages3476
Number of pages1
Volume55
Edition2
Publication statusPublished - 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: Sep 20 2006Sep 22 2006

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period9/20/069/22/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Torikai, N., Kawaguchi, D., Takano, A., Matsushita, Y., Dalgliesh, R., & Langridge, S. (2006). Interfacial structure of strong-segregated block copolymer thin film at high temperature. In 55th SPSJ Symposium on Macromolecules (2 ed., Vol. 55, pp. 3476)