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DSC and thermal stability investigation of novel poly(ester-ether) glycols and poly(ester-ether)urethanes

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Abstract

A new group of poly(ester-ether) glycols was obtained by polycondensation of adipic acid with poly(alkylene glycol) or of adipic acid with mixture of poly(alkylene glycol) and ethylene glycol. Poly(ester-ether) glycols were synthesised in a two-step method at comparable laboratory conditions. We prepared series of poly(ester-ether) glycols where molar ratios [COOH]:[OH] were changed in the range from 1:1.20 to 1:2.10. The molecular mass of synthesized substances was in the range from 850 to 2500 g mol-1. Thermal stability of poly(ester-ether) glycols and obtained polyurethanes was investigated by thermogravimetric analysis and DSC method. We have found that obtained oligomerols obtained from adipic acid and poly(tetramethylene glycol) have the highest thermal stability. The differential scanning calorimetry shown occurrence of two-phase transitions for examined polyurethanes, which are described by glass transition temperature T g and the melting temperature T t.

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Authors and Affiliations

  1. Chemical Faculty, Polymer Technology Department, Gdańsk University of Technology, 80-952, Gdańsk, Poland

    J. Datta & A. Balas

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  1. J. Datta
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  2. A. Balas
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Datta, J., Balas, A. DSC and thermal stability investigation of novel poly(ester-ether) glycols and poly(ester-ether)urethanes. Journal of Thermal Analysis and Calorimetry 74, 615–621 (2003). https://doi.org/10.1023/B:JTAN.0000005202.46487.ca

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  • DOI: https://doi.org/10.1023/B:JTAN.0000005202.46487.ca

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