Date of Award

6-1952

Document Type

Union College Only

Degree Name

Bachelor of Science

Department

Chemistry

Language

English

Abstract

In continuing the work of Cohen and Opitz the percent polymer formed by the inhibition of the thermal polymerization of styrene with chloranil at one hundred degrees is determined to be 0.0025%. The first polymer is precipitated by absolute methanol approximately twenty minutes before the end of the induction period. For polymer determination an analytical method is developed, which is applicable for concentrations between 0.001% and 0.022% by weight measures the solution turbidity after precipitation from the monomer. This method can be extended to 0.08% polymer. Polymer percentages to be measured in this manner greater than 0.02% were diluted with styrene. Polymer percentages greater than one percent were determined by flash distillation.

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