Simulations of Morphology Evolution in Polymer Blends
during Light Self-Trapping
Posted on 2017-05-19 - 18:23
Simulations are presented for binary
phase morphologies prepared
via coupling the self-trapping properties of light with photopolymerization
induced phase separation in blends of reactive monomer and inert linear
chain polymer. The morphology forming process is simulated based on
a spatially varying photopolymerization rate, dictated by self-trapped
light, coupled with the Cahn–Hilliard equation that incorporates
the free energy of polymer mixing, degree of polymerization, and polymer
mobility. Binary phase morphologies form with a structure that spatially
correlates to the profile of the self-trapped beam. Attaining this
spatial correlation emerges through a balance between the competitive
processes entailed in photopolymerization-induced decreases in diffusion
mobility and the drive for the blend components to phase separate.
The simulations demonstrate the ability for a self-trapped optical
beam to direct binary phase morphology along its propagation path.
Such studies are important for controlling the structure of polymer
blends, whereby physical properties and critical physical and chemical
phenomena may be enhanced.
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Biria, Saeid; Hosein, Ian D. (2017). Simulations of Morphology Evolution in Polymer Blends
during Light Self-Trapping. ACS Publications. Collection. https://doi.org/10.1021/acs.jpcc.7b03348
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AUTHORS (2)
SB
Saeid Biria
IH
Ian D. Hosein
KEYWORDS
self-trapping propertiesdiffusion mobilityphase morphologychain polymerpolymer mobilityBinary phase morphologies formSuch studiesphase separationLight Self-Trapping Simulationschemical phenomenaMorphology Evolutionphotopolymerization rateself-trapped lightpolymer blendsreactive monomerphotopolymerization-induced decreasesPolymer Blendsself-trapped beamphase morphologiesblend componentspropagation path