The spinodal decomposition of a polymer-polymer-solvent ternary system was investigated in a 3-dimensional numerical model. The Cahn-Hilliard equation was employed to describe the free energy profile of the domain. A heterogeneously functionalized substrate was also implemented into the model to simulate the effect of substrate attraction. 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 compatibility of the result pattern and the pattern on the substrate was measured by a scalar, Cs. The influence of the solvent concentration on the refinement of the result pattern was studied in this work. A critical time can be observed from the evolution of the value of Cs. The morphology evolution of a system considering the solvent evaporation was also studied.
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ASME 2008 International Mechanical Engineering Congress and Exposition
October 31–November 6, 2008
Boston, Massachusetts, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4874-6
PROCEEDINGS PAPER
Numerical Simulation of the Phase Separation of a Polymer-Polymer-Solvent Ternary System on a Heterogeneously Functionalized Substrate
Yingrui Shang,
Yingrui Shang
University of Massachusetts - Lowell, Lowell, MA
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David Kazmer,
David Kazmer
University of Massachusetts - Lowell, Lowell, MA
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Ming Wei,
Ming Wei
University of Massachusetts - Lowell, Lowell, MA
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Carol Barry,
Carol Barry
University of Massachusetts - Lowell, Lowell, MA
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Joey Mead
Joey Mead
University of Massachusetts - Lowell, Lowell, MA
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Yingrui Shang
University of Massachusetts - Lowell, Lowell, MA
David Kazmer
University of Massachusetts - Lowell, Lowell, MA
Ming Wei
University of Massachusetts - Lowell, Lowell, MA
Carol Barry
University of Massachusetts - Lowell, Lowell, MA
Joey Mead
University of Massachusetts - Lowell, Lowell, MA
Paper No:
IMECE2008-67209, pp. 217-224; 8 pages
Published Online:
August 26, 2009
Citation
Shang, Y, Kazmer, D, Wei, M, Barry, C, & Mead, J. "Numerical Simulation of the Phase Separation of a Polymer-Polymer-Solvent Ternary System on a Heterogeneously Functionalized Substrate." Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B. Boston, Massachusetts, USA. October 31–November 6, 2008. pp. 217-224. ASME. https://doi.org/10.1115/IMECE2008-67209
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