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Bismaleimides derived from polyurethane. Thermal, mechanical, dielectrical and wettability properties

M. SAVA1,* , S. VLAD1

Affiliation

  1. “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, 700487, Iasi, Romania

Abstract

A series of bismaleimides with urethane groups in the main chain, were synthesized from maleic anhydride and polyurethane prepolymers based on various diisocyanate and polyether, polyester diols with various chain lengths. The products were characterized by FTIR, 1H-NMR and elemental analysis. Thermogravimetric analysis (TGA) was performed in order to evaluate the thermal properties. The mechanical behavior of these polymers was investigated by stress-strain measurements on films at room temperature. Dielectric properties and wettability values were performed using the Novocontrol “Concept 40” broadband dielectric spectrometer and respectively Sigma 700 tensiometer..

Keywords

Bismaleimide, FTIR analysis, Mechanical properties, Polyurethane, Thermal properties.

Submitted at: June 11, 2009
Accepted at: June 28, 2009

Citation

M. SAVA, S. VLAD, Bismaleimides derived from polyurethane. Thermal, mechanical, dielectrical and wettability properties, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 6, pp. 898-906 (2009)