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Studies on photosensitive homopolymer and copolymers having a pendant photocrosslinkable functional group
Author(s) -
Balaji R.,
Nanjundan S.
Publication year - 2002
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.11107
Subject(s) - copolymer , polymer chemistry , monomer , glycidyl methacrylate , thermogravimetric analysis , polymer , thermal stability , methacrylate , materials science , glass transition , differential scanning calorimetry , gel permeation chromatography , radical polymerization , reactivity (psychology) , polymerization , radical initiator , chemistry , organic chemistry , composite material , medicine , physics , alternative medicine , pathology , thermodynamics
The methacrylate monomer 4‐methyacryloyloxyphenyl‐3′,4′‐dimethoxystyryl ketone (MPDMSK), having a free‐radical polymerizable group and a photocrosslinkable functional group, was synthesized. The homopolymer and copolymers of MPDMSK with glycidyl methacrylate were synthesized by free‐radical solution polymerization. The structures of the newly synthesized monomers, homopolymer, and copolymers were confirmed by different spectroscopic techniques. The average molecular weights of the polymers were determined by gel permeation chromatography. The thermal stability of the polymers was measured by thermogravimetric analysis in air and the glass‐transition temperatures were determined by differential scanning calorimetry under nitrogen atmosphere. The copolymer compositions were determined by 1 H‐NMR analysis. The monomer reactivity ratios were determined by the application of conventional linearization methods such as Fineman–Ross, Kelen–Tüdös, and extended Kelen–Tüdös methods. The photoreactivity of both the homopolymer and the copolymers having pendant chalcone moieties was studied in various solvents. The effects of various factors such as solvents, concentrations, copolymer ratios, and photosensitizers on the rate of photocrosslinking of the newly synthesized polymers were investigated and the results were discussed for using the polymers as negative photoresists. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 1023–1037, 2002