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
CountryUnited 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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