Modeling isothermal free-radical frontal polymerization with gel effect using free volume theory, with and without inhibition

被引:0
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作者
D. E. Devadoss
V. A. Volpert
机构
[1] Northwestern University,Department of Engineering Sciences and Applied Mathematics
来源
Journal of Mathematical Chemistry | 2006年 / 39卷
关键词
polymerization; mathematical modeling; isothermal frontal gel effect; 35K57; 80A30; 60J60;
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摘要
Frontal Polymerization is a process that converts monomers into polymers by means of a propagating spatially localized reaction front. Such fronts exist with free-radical polymerization, where in the simplest case, a mixture of monomers and initiator is placed into a test tube and upon initiation of the reaction at one end of the tube, a self-sustained wave develops and propagates through the tube. Isothermal Frontal Polymerization (IFP), often referred to as interfacial gel polymerization, occurs due to the coupling of mass diffusion of the species and the gel effect. Utilizing the free volume theory of Vrentas and Duda for describing the self-diffusive behavior of the gel effect, we mathematically model and study this IFP process. We determine, both numerically and analytically, characteristics of the process including the propagation velocity of the reaction zone, the structure of the wave, and the distance traveled by the front before it breaks down due to reactions ahead of the front
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页码:73 / 105
页数:32
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