Accession Number : AD0656760

Title :   IRRADIATION 'FACTOR-DEPENDENCY'. STYRENE WITH ADDITIVES.

Descriptive Note : Radiation Chemistry Lab. Series research rept.,

Corporate Author : QUARTERMASTER RESEARCH AND ENGINEERING COMMAND NATICK MASS

Personal Author(s) : Degering,Ed. F. ; Caldarella,G. J. ; Evans,Flora E. ; Grib,Stephen ; Smith,Throop

Report Date : NOV 1960

Pagination or Media Count : 32

Abstract : Studies involving the irradiation of styrene (containing 1% silicone oil, acrylic acid, methacrylic acid, methyl acrylate, butyl acrylate, vinyl acetate, or acrylonitrile) with a 2 Mev electron beam under various exposure conditions yielded the following conclusions: (1) the effect of an additive is a function of dose rate with respect to both relative yield and the molecular weight of the polymer, (2) the molecular weight decreases in general with an increase in dose rate, irrespective of the additive, (3) an additive which significantly increases the yield tends in general to produce somewhat lower molecular weight polymers than do other additives which give lower yields, (4) an additive, as a function of dose rate, may either increase or decrease the yield of polymer obtained by the irradiation-induced polymerization of some vinyl monomers, and (5) the efficiency of the polymerization decreases markedly for the higher dose rates used in this study. (Author)

Descriptors :   (*STYRENE PLASTICS, *RADIATION CHEMISTRY), STYRENES, POLYMERIZATION, ADDITIVES, SILICONES, FATTY ACIDS, FATTY ACID ESTERS, ACRYLIC RESINS, VINYL PLASTICS, ACETATES, ACRYLONITRILE POLYMERS, ELECTRON IRRADIATION, DOSE RATE, MOISTURE

Subject Categories : Radiation and Nuclear Chemistry
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE