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The effect of heat on the molecular weight of poly(ethyl 2‐cyanoacrylate) adhesive
Author(s) -
Guthrie J.,
Otterburn M. S.,
Rooney J. M.,
Tsang C. N.
Publication year - 1985
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.1985.070300713
Subject(s) - depolymerization , adhesive , monomer , gel permeation chromatography , polymer , methacrylate , polymer chemistry , methyl methacrylate , curing (chemistry) , materials science , bond strength , cyanoacrylate , molar mass , molecular mass , permeation , composite material , chemistry , organic chemistry , membrane , layer (electronics) , enzyme , biochemistry
Steel–steel ethyl 2‐cyanoacrylate adhesive bonds have been thermally aged and the polymeric material isolated from the glue line. Molecular weight measurement by gel permeation chromatography suggest that a significant degree of post‐curing occurs followed by a slight decrease in molecular weight. This decrease in molar mass is not considered large enough to explain the observed decrease in bond strength. It is postulated that poly(ethyl 2‐cyanoacrylate) undergoes thermal degradation in a manner similar to that reported for poly(methyl methacrylate). The loss in bond strength is thought to be due to the disruption of the polymer–metal interface by monomer molecules produced during the thermal depolymerization.