Kondratowicz - Fibre-grade copoly(oxyethylene-b-ethylene terephthalate)s with improved optical properties

R. Ukielski; F. Ł. Kondratowicz

Published : 2022-08-24

Vol. 53 No. 3 (2008)

Kondratowicz - Fibre-grade copoly(oxyethylene-b-ethylene terephthalate)s with improved optical properties

R. Ukielski F. Ł. Kondratowicz

Abstract

The conditions of synthesis of block copoly(oxyethylene-b-ethylene terephthalate)s (PEG-b-PET) with good optical parameters and designed for the production of hydrophilic fibers are presented. For polycondensation the catalysts: antimony trioxide (Sb2O3) and titanium tetraisopropoxide [Ti(OiPr)4] were used. The best optical properties of the polymers were achieved by using the mixture of Sb2O3/Ti(OiPr)4 catalysts. The system which thermally stabilize the PEG-b-PET copolymers was selected. It was stated that the melting temperature (Tm) of the copolymer was insignificantly lower than that of the PET homopolymer (...T=11K) when the content of PEG 4000 comonomer amounts 30 wt. %. When the weight fraction of PEG 4000 in the copolymer does not exceed 20 wt. % a cold crystallization is observed.

Keywords

poli(etero-b-estry) ; poli(tereftalan etylenu) ; stabilizacja ; degradacja termooksydacyjna poly(ether-b-ester) ; poly(ethylene terephthalate) ; stabilization ; thermo-oxidative degradation

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Ukielski, R., & Kondratowicz, F. Ł. (2022). Kondratowicz - Fibre-grade copoly(oxyethylene-b-ethylene terephthalate)s with improved optical properties. Polimery, 53(3), 224-227. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1306

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