ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Various poly(alkyl 2-cyanoacrylates) and poly(allyl 2-cyanoacrylates) having different molecular weights have been prepared. Dynamic mechanical analysis was carried out over the temperature range 23°Cto 230°Cat a fixed frequency of 110 Hz, in order to study the effect of temperature on the storage modules, loss modulus and loss tangent of the films. From these data, the glass transition temperature of the polymers could be determined and the effect of the alkyl group on the stiffness of the polymers could be evaluated. It is shown that crosslinking occurs in the case of poly(allyl 2-cyanoacrylates) when it is subjected to temperatures above its glass transition temperature. This crosslinking is seen as a rapid increase in the storage modulus. This increase is eliminated if the polymer samples are thermally aged prior to dynamic mechanical analysis.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1987.021881224
