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7.20 Predict the extent of reaction at which gelation would occur in the following two vinyl-divinyl systems, both containing 1 mol% of the divinyl component: (a) styrene- ethylene glycol dimethacrylate and (b) methyl methacrylate-divinyl benzene. As- sume that the reaction conditions for the two systems are such as to yield the same DPw of 1000 for the uncrosslinked polymer. Take the ri and r2 values from Table 7.1 for the analogous vinyl-vinyl copolymerizations.

7.20 Predict the extent of reaction at which gelation would occur in the following two vinyl-divinyl systems, both containing 1 mol% of the divinyl component: (a) styrene- ethylene glycol dimethacrylate and (b) methyl methacrylate-divinyl benzene. As- sume that the reaction conditions for the two systems are such as to yield the same DPw of 1000 for the uncrosslinked polymer. Take the ri and r2 values from Table 7.1 for the analogous vinyl-vinyl copolymerizations.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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7.20 Predict the extent of reaction at which gelation would occur in the following two vinyl-divinyl systems, both containing 1 mol% of the divinyl component : (a) styrene- ethylene glycol dimethacrylate and (b) methyl methacrylate-divinyl benzene. As- sume that the reaction conditions for the two systems are such as to yield the same DPw of 1000 for the uncrosslinked polymer. Take the r and r2 values from Table 7.1 for the analogous vinyl-vinyl copolymerizations. [Ans. (a) pe = 0.015; (b) pe = 0.012] %3D %3D
Transcribed Image Text:7.20 Predict the extent of reaction at which gelation would occur in the following two vinyl-divinyl systems, both containing 1 mol% of the divinyl component : (a) styrene- ethylene glycol dimethacrylate and (b) methyl methacrylate-divinyl benzene. As- sume that the reaction conditions for the two systems are such as to yield the same DPw of 1000 for the uncrosslinked polymer. Take the r and r2 values from Table 7.1 for the analogous vinyl-vinyl copolymerizations. [Ans. (a) pe = 0.015; (b) pe = 0.012] %3D %3D
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