Changes in micro-phase separation of di-block copolymer melts induced by a circle fiber

Yutaka Oya, Naofumi Umemoto, Tomonaga Okabe

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

Abstract

Using self-consistent field theory (SCFT), we computed phase-separated structure of di-block copolymer to apply this structure for the matrix of a composite. For this purpose, we combined SCFT with finite element method, which enables us to consider the effect of a smoothed boundary of a carbon fiber on the phase separation. In the result, a circularly shaped carbon fiber disturbs the phase separated structure: changes from lamella phase to cylinder phase are induced by a circle fiber and this induction is emphasized with increasing the fiber radius. Furthermore, we found that four parameters, block-ratio ( f ), polymer length ( N ) and Flory-Huggins parameter ( Χ ), volume fraction of fiber (VM) are independently important to determine the equilibrium phase structures in a matrix penetrated by a circle fiber, even if only f and NΧ are essential in the bulk phase.

Original languageEnglish
Title of host publication33rd Technical Conference of the American Society for Composites 2018
PublisherDEStech Publications Inc.
Pages792-797
Number of pages6
ISBN (Electronic)9781510872073
Publication statusPublished - 2018 Jan 1
Event33rd Technical Conference of the American Society for Composites 2018 - Seattle, United States
Duration: 2018 Sep 242018 Sep 27

Publication series

Name33rd Technical Conference of the American Society for Composites 2018
Volume2

Other

Other33rd Technical Conference of the American Society for Composites 2018
Country/TerritoryUnited States
CitySeattle
Period18/9/2418/9/27

ASJC Scopus subject areas

  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Metals and Alloys

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