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Title: Morphological-evolution pathway during phase separation in polymer solutions with highly asymmetrical miscibility gap

Abstract

Microstructural evolution during thermally induced phase separation in a polymer solution with a highly asymmetrical miscibility gap is analyzed using Flory-Huggins thermodynamics and nonlinear Cahn-Hilliard kinetics. Computer simulation results demonstrate that, in contrast to systems with symmetric miscibility gaps, interesting morphological-evolution pathways (MEPs) including cluster-to-percolation and percolation-to-cluster transitions are identified. These MEPs are rationalized according to asynchronous evolution of the two product phases. For a highly asymmetric polymer system, the initial solution composition is also found to play a critical role in determining the MEPs. According to the simulation results a map of MEPs in terms of initial solution composition and aging time of phase separation is established to guide future microstructural design in asymmetrical polymer solutions.

Authors:
 [1];  [1];  [1];  [2]
+ Show Author Affiliations
  1. Xi'an Jiaotong Univ. (China). Frontier Inst. of Science and Technology. MOE Key Lab. for Nonequilibrium Synthesis and Modulation of Condensed Matter. State Key Lab. for Mechanical Behavior of Materials
  2. Xi'an Jiaotong Univ. (China). Frontier Inst. of Science and Technology. MOE Key Lab. for Nonequilibrium Synthesis and Modulation of Condensed Matter. State Key Lab. for Mechanical Behavior of Materials; The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
Publication Date:
Research Org.:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1536419
Grant/Contract Number:  
SC0001258
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review E
Additional Journal Information:
Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2470-0045
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhang, Gang, Yang, Tao, Yang, Sen, and Wang, Yunzhi. Morphological-evolution pathway during phase separation in polymer solutions with highly asymmetrical miscibility gap. United States: N. p., 2017. Web. doi:10.1103/physreve.96.032501.
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Zhang, Gang, Yang, Tao, Yang, Sen, & Wang, Yunzhi. Morphological-evolution pathway during phase separation in polymer solutions with highly asymmetrical miscibility gap. United States. https://doi.org/10.1103/physreve.96.032501
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Zhang, Gang, Yang, Tao, Yang, Sen, and Wang, Yunzhi. Mon . "Morphological-evolution pathway during phase separation in polymer solutions with highly asymmetrical miscibility gap". United States. https://doi.org/10.1103/physreve.96.032501. https://www.osti.gov/servlets/purl/1536419.
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@article{osti_1536419,
title = {Morphological-evolution pathway during phase separation in polymer solutions with highly asymmetrical miscibility gap},
author = {Zhang, Gang and Yang, Tao and Yang, Sen and Wang, Yunzhi},
abstractNote = {Microstructural evolution during thermally induced phase separation in a polymer solution with a highly asymmetrical miscibility gap is analyzed using Flory-Huggins thermodynamics and nonlinear Cahn-Hilliard kinetics. Computer simulation results demonstrate that, in contrast to systems with symmetric miscibility gaps, interesting morphological-evolution pathways (MEPs) including cluster-to-percolation and percolation-to-cluster transitions are identified. These MEPs are rationalized according to asynchronous evolution of the two product phases. For a highly asymmetric polymer system, the initial solution composition is also found to play a critical role in determining the MEPs. According to the simulation results a map of MEPs in terms of initial solution composition and aging time of phase separation is established to guide future microstructural design in asymmetrical polymer solutions.},
doi = {10.1103/physreve.96.032501},
journal = {Physical Review E},
number = 3,
volume = 96,
place = {United States},
year = {Mon Sep 11 00:00:00 EDT 2017},
month = {Mon Sep 11 00:00:00 EDT 2017}
}
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Journal Article:
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https://doi.org/10.1103/physreve.96.032501
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    Works referencing / citing this record:

    Progress Report on Phase Separation in Polymer Solutions
    journal, March 2019

    • Wang, Fei; Altschuh, Patrick; Ratke, Lorenz
    • Advanced Materials, Vol. 31, Issue 26
    • DOI: 10.1002/adma.201806733

    Progress Report on Phase Separation in Polymer Solutions
    text, January 2019

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