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Glass transition temperatures of poly(alkyl α‐cyanoacrylates)
Author(s) -
Kulkarni R. K.,
Porter H. J.,
Leonard F.
Publication year - 1973
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.1973.070171122
Subject(s) - alkyl , glass transition , cyanoacrylates , polymer , polymer chemistry , materials science , aqueous solution , molar mass distribution , coalescence (physics) , chemistry , cyanoacrylate , organic chemistry , composite material , adhesive , physics , layer (electronics) , astrobiology
The glass transition temperatures of the poly(alkyl α‐cyanocrylates) were determined by the dilatometric technique, and some of the values were checked by differential thermal analysis. The data indicate that the T g 's appear to decrease with increase in the size of the alkyl group, for a given molecular weight range. It was also found that the T g of poly(methyl or butyl α‐cyanoacrylate) increased with molecular weight. All cyanoacrylates, excepting methyl and ethyl esters, formed only low molecular weight polymers in aqueous surroundings. Therefore, they have characteristic low glass transition temperatures, causing coalescence at low temperatures.