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γ‐irradiation of styrene copolymers
Author(s) -
Burlant W.,
Green D.,
Taylor C.
Publication year - 1959
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1959.070010305
Subject(s) - copolymer , styrene , methyl methacrylate , mole fraction , polymer chemistry , irradiation , materials science , methyl acrylate , viscosity , chemistry , polymer , composite material , physics , nuclear physics
Copolymers of styrene‐methyl methacrylate were irradiated in vacuo with γ‐rays; viscosity changes and gas yields (moles gas per mole methyl methacrylate in copolymer) for H 2 , CO, CO 2 , CH 4 , HCOOCH 3 , and CH 3 OH were examined at doses of 1.0 Mrep to 10.0 Mrep. It was found that styrene molecules protect the copolymer from degrading while decreasing the gas yields up to a styrene concentration of about 0.5 mole fraction; above this concentration, these radiation effects are independent of composition. When styrene–methyl acrylate copolymers were irradiated, styrene offered protection aganist gelation but simultaneously increased the gas yields (gases liberated were identical with those from the first system).