Die Makromolekulare Chemie · 1987 · 10 citations · 11 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsDynamic Mechanical AnalysisPolymer CharacterizationPolymer Physical ChemistryPolymer PhysicsPolymer StabilityThermoplastic PolymersDynamic Mechanical CharacterizationDynamic Mechanical PropertiesGlass TransitionGlass Transition TemperatureLoss ModulusLoss TangentStorage ModulusThermal Stability Of Polymers
Abstract 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.
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