Biomaterial Based Polyurethane Adhesive for Bonding Rubber and Wood Joints

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Abstract

An intermediate compound for synthesizing polyester polyol was prepared from glycosylation of potato starch by reacting it with ethylene glycol in presence of sulphuric acid. Glycol glycoside thus prepared was characterized by HPLC and FTIR. This polyhydroxy compound was replaced in varying amounts with trimethylolpropane for polyester polyol synthesis. Sebacic acid was used as dicarboxylic acid along with castor oil for polyester polyol formulation. Polyols were reacted with toluene 2,4-diisocyanate adduct for polyurethane formation. Polyester polyol and polyurethane were characterized by FTIR. Polyurethane was utilized for bonding wood as well as rubber joints. Bond strength was measured by means of lap shear strength and peel strength for wood and rubber joints, respectively. Chemical resistance of polyurethane adhesive was also evaluated.

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Desai, S. D., Emanuel, A. L., & Sinha, V. K. (2003). Biomaterial Based Polyurethane Adhesive for Bonding Rubber and Wood Joints. Journal of Polymer Research, 10(4), 275–281. https://doi.org/10.1023/B:JPOL.0000004630.77120.bb

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