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One-step hydroxylation of rubber seed oil and synthesis of green polyurethane networks thereof

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Abstract

The unsaturation in Rubber seed oil (RSO) was converted to polyhydroxy compound (HY-RSO) in a single step reaction using potassium permanganate solution under carefully controlled conditions. The HY-RSO polyol so formed was reacted with methylene diisocyanate (MDI) to synthesize polyurethane prepolymer (PU) containing terminal isocyanate groups. Moisture aided curing of the prepolymer led to crosslinked polyurethanes bearing additional urea linkages. The cross-linked poly(urethane-urea)‘s mechanical, thermal and thermo-physical properties increased with increase in the isocyanate-content in the precursor. These properties were better than those of a PU network derived from castor oil as a reference polyol. It was demonstrated for the first time that RSO could effectively be converted to a value-added hydroxyl derivative for eventual conversion to many useful materials including polyurethanes for related applications.

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Authors and Affiliations

  1. Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Kalamassery, Cochin - 682022, India

    George Justine, S. Athul & C. P. Reghunadhan Nair

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  1. George Justine
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  2. S. Athul
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  3. C. P. Reghunadhan Nair
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Correspondence to C. P. Reghunadhan Nair.

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Justine, G., Athul, S. & Nair, C.P.R. One-step hydroxylation of rubber seed oil and synthesis of green polyurethane networks thereof. J Polym Res 27, 191 (2020). https://doi.org/10.1007/s10965-020-02134-0

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  • DOI: https://doi.org/10.1007/s10965-020-02134-0

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