Photo-oxidative degradation of copolymers of acrylonitrile with styrene, α-methylstyrene and p-methylstyrene

Berko H., Hill D.J.T., O'Donnell J.H. and Pomery P.J. (1992) Photo-oxidative degradation of copolymers of acrylonitrile with styrene, α-methylstyrene and p-methylstyrene. Polymer Degradation and Stability, 37 1: 85-90. doi:10.1016/0141-3910(92)90096-N


Author Berko H.
Hill D.J.T.
O'Donnell J.H.
Pomery P.J.
Title Photo-oxidative degradation of copolymers of acrylonitrile with styrene, α-methylstyrene and p-methylstyrene
Journal name Polymer Degradation and Stability   Check publisher's open access policy
ISSN 0141-3910
Publication date 1992
Sub-type Article (original research)
DOI 10.1016/0141-3910(92)90096-N
Volume 37
Issue 1
Start page 85
End page 90
Total pages 6
Subject 1605 Policy and Administration
2507 Polymers and Plastics
Abstract The photo-oxidative degradation of 25 μm-thick films of copolymers of acrylonitrile with styrene (SAN), α-methylstyrene (AMS:AN) and p-methylstyrene (PMS:AN) by UV-B radiation (maximum intensity at 313 nm) resulted in the formation of conjugated unsaturation, hydroxyl and carboxyl structures, and main-chain scission and crosslinking. Oxidation increased with increasing proportion of the styrenic monomer, and in the order AMS:AN, SAN, PMS:AN. Chain scission was predominant in ASM:AN and SAN, but crosslinking was the main reaction in PMS:AN. The tensile strength and elongation to fracture of PMS:AN were relatively unaffected by high radiation doses, but decreased substantially for SAN and AMS:AN, consistently with the changes in molecular weight.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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