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Two series of poly(ester urethane) (PUR) elastomers, containing poly(?-caprolactone) diol of Mn=2000 as soft segments were synthesized. In each series the same diisocyanate in hard segment, i.e., 1,6-hexamethylenediisocyanate was used in the same content. The PUR polymers were prepared in two-step polymerization in the absence of a catalyst; the molar ratio of OHpolyol/NCO/OHchain extender was 1/2/1...
Purpose: of this paper is to present the results of research programme on improve polymer materials properties by irradiation. This method can be helpful in improving some of mechanical properties and thermal stability of polymers. Design/methodology/approach: Radiation processing involves the use of natural or man-made sources of high energy radiation on an industrial scale. The principle of the...
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