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Thermogravimetric analysis of PVC/NR-b-PU blends

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Abstract

Thermal stability of solution-cast blends of poly(vinylchloride) and NR-b-PU block copolymers of three different chain extender diols was studied by thermogravimetry. Thermal degradation of individual components and their blends were investigated with special reference to blend ratio. As the block copolymer content in the blends increased their thermal stability was also found to increase. Enhanced thermal stability of PVC is believed due to the favorable interaction with PVC and the PU hard segments of the block copolymer. DTG curves were used for the determination of different stages involved in the degradation. Activation energy for degradation was determined from Coats–Redfern plot.

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Authors and Affiliations

  1. P.G. Department of Chemistry, D.B. College, Thalayolaparambu P.O, Kottayam, 686605, Kerala, India

    M. N. Radhakrishnan Nair

  2. School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills P.O, Kottayam, 686560, Kerala, India

    M. R. Gopinathan Nair

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  1. M. N. Radhakrishnan Nair
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  2. M. R. Gopinathan Nair
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Correspondence to M. N. Radhakrishnan Nair.

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Radhakrishnan Nair, M.N., Gopinathan Nair, M.R. Thermogravimetric analysis of PVC/NR-b-PU blends. J Therm Anal Calorim 103, 863–872 (2011). https://doi.org/10.1007/s10973-010-1113-1

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  • DOI: https://doi.org/10.1007/s10973-010-1113-1

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