TY - GEN
T1 - Changes in micro-phase separation of di-block copolymer melts induced by a circle fiber
AU - Oya, Yutaka
AU - Umemoto, Naofumi
AU - Okabe, Tomonaga
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85059316238
T3 - 33rd Technical Conference of the American Society for Composites 2018
SP - 792
EP - 797
BT - 33rd Technical Conference of the American Society for Composites 2018
PB - DEStech Publications Inc.
T2 - 33rd Technical Conference of the American Society for Composites 2018
Y2 - 24 September 2018 through 27 September 2018
ER -