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Photo‐Deformation of Syndiotactic Polystyrene Gels
Author(s) -
Itagaki Hideyuki,
Iida Reiko,
Mochizuki Jun
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550409
Subject(s) - polystyrene , irradiation , materials science , chloroform , excitation , beam (structure) , tacticity , deformation (meteorology) , polymer chemistry , photochemistry , optics , composite material , chemistry , polymer , chromatography , physics , polymerization , nuclear physics , quantum mechanics
We report a usual and novel phenomenon that an excitation light beam of a spectrofluorometer produced a black mark in gels of syndiotactic polystyrene (SPS). This mark whose shape is identical with that of an excitation light beam was found to appear in SPS/chloroform gel just after only irradiation at 260 nm for 5 to 10 min. The heating of the gel with the mark at 80°C diminished the mark and recovered uniformly the gel to be as it had been before irradiation. We discuss what the black mark is and why it is produced by light irradiation.