Main Article Content

Abstract

The study deals the effect of increasing NCO/OH molar ratio on the physico-mechanical properties of isocyanate terminated polyurethane prepolymer. The prepolymer was prepared using castor oil and toluene-2,4-diisocyanate. The NCO/OH molar ratio has been varied from 1.6 to 2.0. The formation of the prepolymer was confirmed by UV and FTIR spectroscopy. The results reveal that the curing time of the prepolymer decreased with increase in NCO/OH molar ratio. When NCO/OH molar ratio increased, the tensile strength of the polyurethane film increased, while percent elongation decreased due to increase in hard segment content.

Keywords

Polyurethane Prepolymer Tensile strength UV FTIR

Article Details

Author Biographies

K. Rathika, Research scholar, Department of chemistry, Scott Christian College (Autonomus), Ngl.

Research scholar, Department of chemistry, Scott Christian College (Autonomus), Ngl.

S. Begila David, Assistant professor, Department of chemistry, Scott Christian College (Autonomus), Ngl.

Assistant professor, Department of chemistry, Scott Christian College (Autonomus), Ngl.
How to Cite
Rathika, K., & David, S. B. (2016). EFFECT OF INCREASING NCO/OH MOLAR RATIO ON THE CHEMICAL AND MECHANICAL PROPERTIES OF ISOCYANATE TERMINATED POLYURETHANE PREPOLYMER DERIVED FROM BIO-MASS. Green Chemistry & Technology Letters, 2(2), 78-82. https://doi.org/10.18510/gctl.2016.225

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