POLYMERIZATION-INDUCED PHASE SEPARATION: INTERMEDIATE DYNAMICS

J. C. Lee ()
Additional contact information
J. C. Lee: Department of Physics and Astronomy, University of Southern Mississippi, Hattiesburg, MS 39406-5046, USA

International Journal of Modern Physics C (IJMPC), 2000, vol. 11, issue 02, 347-358

Abstract: When phase separation is induced by polymerizating monomers in a mixture of monomers and nonreacting molecules, the dynamics is different depending on the time scale of polymerizationτpland the time scale of phase separationτps. Previous studies have explored the dynamic regimes whereτpl≪ τpsand that whereτpl≫ τps. In the former, a spanning gel emerges before the phase separation and the phase separation is driven largely by activation. In the latter, phase separation occurs first between polymers and nonbonding molecules and then the polymers turn into a gel, and therefore the driving mechanism is the same as in the usual liquid–liquid demixing processes. Using Molecular Dynamics simulations, we explore in this paper the intermediate dynamic regime where the two time scales are comparable. When the polymerization is done by means of the thermal condensation reaction, we observe the expected crossover, one limit behavior at early times and then the other at late times. When the polymerization is done by means of the radical addition reaction, the results suggest that the driving mechanism changes more than once.

Keywords: Molecular Dynamics Simulation; Polymerization-Induced Phase Separation; PDLC (search for similar items in EconPapers)
Date: 2000
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0129183100000328
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:ijmpcx:v:11:y:2000:i:02:n:s0129183100000328

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0129183100000328

Access Statistics for this article

International Journal of Modern Physics C (IJMPC) is currently edited by H. J. Herrmann

More articles in International Journal of Modern Physics C (IJMPC) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().