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Observation of molecular chain scission during crazing of polystyrene
Author(s) -
Popli R.,
Roylance D.
Publication year - 1982
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760221606
Subject(s) - crazing , chain scission , polystyrene , materials science , bond cleavage , polymer , slippage , composite material , gel permeation chromatography , covalent bond , polymer science , polymer chemistry , chemistry , organic chemistry , catalysis
A series of gel permeation chromatographic (GPC) separations has been performed on polystyrene specimens in an attempt to discern whether or not mechanical crazing is accompanied by significant covalent bond scission. It was found that the extent of scission is not large but is indeed present in concentrations that are detectable by GPC. This suggests that molecular‐slippage‐only models of the crazing process are perhaps overly idealized and that crazing cannot take place in highly entangled polymer solids without some bond rupture.