Refractometric determination of second-order transition temperatures in polymers. III. Acrylates and methacrylates

Autor:	Richard H. Wiley, G. M. Brauer
Rok vydání:	1948
Předmět:	chemistry.chemical_classification Acrylate Birefringence Materials science Polymer Methacrylate Viscosity chemistry.chemical_compound Brittleness chemistry Polymer chemistry Physical chemistry Refractive index Alkyl
Zdroj:	Journal of Polymer Science. 3:647-651
ISSN:	1542-6238 0022-3832
DOI:	10.1002/pol.1948.120030506
Popis:	A refractometric technique for determination of second-order transition temperatures (Tm) of polymers has been extended to include a series of alkyl acrylate and methacrylate polymers with transitions at temperatures down to −50°C. A convenient technique for determining refractive index down to −75°C. is described. Certain long-chain alkyl polymers are birefringent below Tm. Correlations of brittle point with Tm and relations between viscosity and Tm are reported.
Databáze:	OpenAIRE
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