Supermolecular structure, morphology and physical properties of urea-urethane elastomers

J. Ryszkowska

Published : 2012-12-30

Vol. 57 No. 11-12 (2012)

Supermolecular structure, morphology and physical properties of urea-urethane elastomers

J. Ryszkowska

Abstract

Urea-urethane elastomers from polyesterdiol, 4,4'-diphenylmethane diisocyanate (MDI) and dicyandiamide were examined. Their structure was analysed using atomic force microscopy, and the obtained images underwent quantitative analysis. FT-IR spectroscopic analyses were performed, and the phase separation degree was calculated using the results. The structure was also estimated via indirect methods with the use of thermal analysis DSC and TGA. Mechanical and abrasive wear properties were also tested. As a result of the analyses, a linear dependence was found between the size of the hard domain agglomerates and the analysed properties of PUR materials, such as the glass transition temperature of the soft phase, the temperature of the maximum speed of the hard phase's degradation, density, hardness, tensile strength and strain.

Keywords

poliuretany ; elastomery ; poli(uretano-mocznik) ; struktura nadcząsteczkowa ; morfologia ; mikroskopia sił atomowych ; analiza ilościowa obrazów polyurethanes ; elastomers ; polyurea-urethanes ; phase structure ; morphology ; atomic force microscopy (AFM) ; quantitative image analysis

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Ryszkowska, J. (2012). Supermolecular structure, morphology and physical properties of urea-urethane elastomers. Polimery, 57(11-12), 777–785. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/873

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