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Effects of kinetics coefficients on ternary phase separation during the wet spinning process
Author(s) -
Han Yu,
Wang Jun,
Zhang Hongdong
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36478
Subject(s) - spinning , ternary operation , phase diagram , materials science , fiber , thermodynamics , diffusion , phase (matter) , particle (ecology) , monte carlo method , kinetics , chemical engineering , polymer chemistry , chemistry , composite material , physics , mathematics , organic chemistry , oceanography , statistics , geology , computer science , engineering , programming language , quantum mechanics
A new Monte Carlo diffusion model is employed to simulate the phase separation of the ternary system during wet spinning process. Our results illustrate the thermodynamics parameters are the primary factors in morphology determination during the phase separation process. Meanwhile by varying kinetic parameters different fiber structures ranging from dust‐like, finger‐like to sponge‐like morphologies are obtained. The morphological patterns are discussed in relation to the rate of particle exchange and the phase diagram. On the basis of the systematical simulation experiments we propose how the competition between segment–solvent and solvent–nonsolvent exchange determines the ultimate fiber morphologies in spinning solution.© 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012