Published August 1998
| Version v1
Journal article
Effect of γ-ray irradiation on polystyrene, poly (methyl methacrylate), and their copolymer prepared by cast polymerization
- 1. Saitama Prefectural Police Headquarters, Urawa (Japan). Criminal Investigation Lab.
Description
Effect of γ-ray irradiation on polystyrene (PS), poly(methyl methacrylate) (PMMA), and their copolymer prepared by cast polymerization was studied using size exclusion chromatography. The main chemical reactions in irradiated polymers were crosslinking and scission. Conversion of all irradiated samples increased regardless of the concentration of initiator (AIBN) used for cast polymerization. On γ-ray irradiation, the molecular weight of PS increased and its distribution broadened, whereas the molecular weight of PMMA decreased. These phenomena should be attributable to the competitive occurrence of scission and crosslinking in PS by γ-ray irradiation, whereas scission occurred mainly in PMMA. (author)
Additional details
Publishing Information
- Journal Title
- Kobunshi Ronbunshu
- Journal Volume
- 55
- Journal Issue
- 8
- Journal Page Range
- p. 433-439
- ISSN
- 0386-2186
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 29065071
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- CHEMICAL RADIATION EFFECTS; COPOLYMERS; CRACK PROPAGATION; CROSS-LINKING; DISTRIBUTION; GAMMA RADIATION; MECHANICAL PROPERTIES; MOLECULAR WEIGHT; PMMA; POLYSTYRENE
- Descriptors DEC
- CHEMICAL REACTIONS; ELECTROMAGNETIC RADIATION; ESTERS; IONIZING RADIATIONS; ORGANIC COMPOUNDS; ORGANIC POLYMERS; PETROLEUM PRODUCTS; PLASTICS; POLYACRYLATES; POLYMERIZATION; POLYMERS; POLYOLEFINS; POLYVINYLS; RADIATION EFFECTS; RADIATIONS