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| Naji, M. |
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| Petrov, R. H. | Madrid |
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Barry, Carol
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Publications (3/3 displayed)
- 2016The effects of recycling on the properties of carbon nanotube-filled polypropylene composites and worker exposurescitations
- 2010Numerical simulation of the self‐assembly of a polymer–polymer–solvent ternary system on a heterogeneously functionalized substratecitations
- 2008Numerical simulation of phase separation of immiscible polymer blends on a heterogeneously functionalized substratecitations
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article
Numerical simulation of the self‐assembly of a polymer–polymer–solvent ternary system on a heterogeneously functionalized substrate
Abstract
The spinodal decomposition of a polymer–polymer–solvent ternary blend spin coated on heterogeneously functionalized substrate is studied in a three-dimensional numerical model. The Cahn-Hilliard equation was used to describe the free energy profile of the domain. The mechanism of the morphology evolution was studied quantitatively. The well-established linear relationship of the characteristic length, R(t), with t1/3 can be observed in the simulation results. The functionalized substrate greatly affected the morphology evolution of blends with different solvent concentrations. The results indicated that a critical time can be observed, at which the evolution rate changes abruptly, also after which the compatibility of the surface morphology to the functionalized substrate pattern increases at a much lower pace in the diluted solution. In the condensed solution, the compatibility actually decreases beyond the critical time. The influence of solvent evaporation is investigated and a sharper interface was observed in the case with solvent evaporation and film thickness reduction. POLYM. ENG. SCI., 2010. © 2010 Society of Plastics Engineers