Evolution of concentration fluctuation during phase separation of polystyrene/poly (vinyl methyl ether) blend in the presence of nanosilica

Qi Chen, Min Zuo, Ruiquan Yang, Jifei Zhang, Xiong LV, Wenjing (Angela) Zhang, Yihu Song, Qiang Zheng

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The influence of nanosilica on the concentration fluctuation of polystyrene/poly (vinyl methyl ether) (PS/PVME) mixtures was investigated during phase separation. The amplitude of concentration fluctuation was quantified by dielectric spectrums based on the idea of Lodge–Mcleish model and the linearized Cahn–Hilliard theory could describe the amplitude evolution of concentration fluctuation at the early stage of phase separation. Hydrophilic nanosilica A200 dispersed in PVME-rich phase behaved an obvious inhibition effect on the concentration fluctuation of blend matrix, while hydrophobic nanosilica R974 dispersed in PS-rich phase had little effect on the concentration fluctuation. The kinetics and amplitude evolution of concentration fluctuation during phase separation for PS/PVME/A200 nanocomposites were remarkably restrained due to the surface adsorption of PVME on A200. As the segmental dynamics of PVME and PS in homogeneous matrix was hardly influenced by A200 and R974, the enhanced miscibility and the significantly constrained flow relaxation of PVME chains might contribute to the retarded concentration fluctuation of PS/PVME/A200 nanocomposites. While the weak interaction between R974 and components of blend matrix and little effect of R974 on the molecular dynamics of PS chains may result in the weak retardation of concentration fluctuation for blend matrix.
Original languageEnglish
JournalJournal of Polymer Science. Part B, Polymer Physics
Volume55
Issue number17
Pages (from-to)1337-1349
Number of pages13
ISSN0887-6266
DOIs
Publication statusPublished - 2017

Keywords

  • Phase separation
  • Nanoparticles
  • Concentration fluctuation
  • Molecular dynamics

Cite this

@article{ade9a6c4b43e4c56a7ab4d0f1703d1bc,
title = "Evolution of concentration fluctuation during phase separation of polystyrene/poly (vinyl methyl ether) blend in the presence of nanosilica",
abstract = "The influence of nanosilica on the concentration fluctuation of polystyrene/poly (vinyl methyl ether) (PS/PVME) mixtures was investigated during phase separation. The amplitude of concentration fluctuation was quantified by dielectric spectrums based on the idea of Lodge–Mcleish model and the linearized Cahn–Hilliard theory could describe the amplitude evolution of concentration fluctuation at the early stage of phase separation. Hydrophilic nanosilica A200 dispersed in PVME-rich phase behaved an obvious inhibition effect on the concentration fluctuation of blend matrix, while hydrophobic nanosilica R974 dispersed in PS-rich phase had little effect on the concentration fluctuation. The kinetics and amplitude evolution of concentration fluctuation during phase separation for PS/PVME/A200 nanocomposites were remarkably restrained due to the surface adsorption of PVME on A200. As the segmental dynamics of PVME and PS in homogeneous matrix was hardly influenced by A200 and R974, the enhanced miscibility and the significantly constrained flow relaxation of PVME chains might contribute to the retarded concentration fluctuation of PS/PVME/A200 nanocomposites. While the weak interaction between R974 and components of blend matrix and little effect of R974 on the molecular dynamics of PS chains may result in the weak retardation of concentration fluctuation for blend matrix.",
keywords = "Phase separation, Nanoparticles, Concentration fluctuation, Molecular dynamics",
author = "Qi Chen and Min Zuo and Ruiquan Yang and Jifei Zhang and Xiong LV and Zhang, {Wenjing (Angela)} and Yihu Song and Qiang Zheng",
year = "2017",
doi = "10.1002/polb.24371",
language = "English",
volume = "55",
pages = "1337--1349",
journal = "Journal of Polymer Science. Part B, Polymer Physics",
issn = "0887-6266",
publisher = "JohnWiley & Sons, Inc.",
number = "17",

}

Evolution of concentration fluctuation during phase separation of polystyrene/poly (vinyl methyl ether) blend in the presence of nanosilica. / Chen, Qi ; Zuo, Min; Yang, Ruiquan ; Zhang, Jifei; LV, Xiong; Zhang, Wenjing (Angela); Song, Yihu; Zheng, Qiang.

In: Journal of Polymer Science. Part B, Polymer Physics, Vol. 55, No. 17, 2017, p. 1337-1349.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Evolution of concentration fluctuation during phase separation of polystyrene/poly (vinyl methyl ether) blend in the presence of nanosilica

AU - Chen, Qi

AU - Zuo, Min

AU - Yang, Ruiquan

AU - Zhang, Jifei

AU - LV, Xiong

AU - Zhang, Wenjing (Angela)

AU - Song, Yihu

AU - Zheng, Qiang

PY - 2017

Y1 - 2017

N2 - The influence of nanosilica on the concentration fluctuation of polystyrene/poly (vinyl methyl ether) (PS/PVME) mixtures was investigated during phase separation. The amplitude of concentration fluctuation was quantified by dielectric spectrums based on the idea of Lodge–Mcleish model and the linearized Cahn–Hilliard theory could describe the amplitude evolution of concentration fluctuation at the early stage of phase separation. Hydrophilic nanosilica A200 dispersed in PVME-rich phase behaved an obvious inhibition effect on the concentration fluctuation of blend matrix, while hydrophobic nanosilica R974 dispersed in PS-rich phase had little effect on the concentration fluctuation. The kinetics and amplitude evolution of concentration fluctuation during phase separation for PS/PVME/A200 nanocomposites were remarkably restrained due to the surface adsorption of PVME on A200. As the segmental dynamics of PVME and PS in homogeneous matrix was hardly influenced by A200 and R974, the enhanced miscibility and the significantly constrained flow relaxation of PVME chains might contribute to the retarded concentration fluctuation of PS/PVME/A200 nanocomposites. While the weak interaction between R974 and components of blend matrix and little effect of R974 on the molecular dynamics of PS chains may result in the weak retardation of concentration fluctuation for blend matrix.

AB - The influence of nanosilica on the concentration fluctuation of polystyrene/poly (vinyl methyl ether) (PS/PVME) mixtures was investigated during phase separation. The amplitude of concentration fluctuation was quantified by dielectric spectrums based on the idea of Lodge–Mcleish model and the linearized Cahn–Hilliard theory could describe the amplitude evolution of concentration fluctuation at the early stage of phase separation. Hydrophilic nanosilica A200 dispersed in PVME-rich phase behaved an obvious inhibition effect on the concentration fluctuation of blend matrix, while hydrophobic nanosilica R974 dispersed in PS-rich phase had little effect on the concentration fluctuation. The kinetics and amplitude evolution of concentration fluctuation during phase separation for PS/PVME/A200 nanocomposites were remarkably restrained due to the surface adsorption of PVME on A200. As the segmental dynamics of PVME and PS in homogeneous matrix was hardly influenced by A200 and R974, the enhanced miscibility and the significantly constrained flow relaxation of PVME chains might contribute to the retarded concentration fluctuation of PS/PVME/A200 nanocomposites. While the weak interaction between R974 and components of blend matrix and little effect of R974 on the molecular dynamics of PS chains may result in the weak retardation of concentration fluctuation for blend matrix.

KW - Phase separation

KW - Nanoparticles

KW - Concentration fluctuation

KW - Molecular dynamics

U2 - 10.1002/polb.24371

DO - 10.1002/polb.24371

M3 - Journal article

VL - 55

SP - 1337

EP - 1349

JO - Journal of Polymer Science. Part B, Polymer Physics

JF - Journal of Polymer Science. Part B, Polymer Physics

SN - 0887-6266

IS - 17

ER -