The effect of heat on the molecular weight of poly(ethyl 2-cyanoacrylate) adhesive

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. T...

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Bibliographic Details
Published in:Journal of applied polymer science 1985-07, Vol.30 (7), p.2863-2867
Main Authors: Guthrie, J., Otterburn, M. S., Rooney, J. M., Tsang, C. N.
Format: Article
Language:English
Subjects:
Application fields
Applied sciences
Exact sciences and technology
Polymer industry, paints, wood
Technology of polymers
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Summary: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.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1985.070300713