Abstract
ABSTRACT Utilization of castor oil and its derivatives as a raw material for polyurethane synthesis is gaining more attention now a days. Castor oil has the unique structural property in terms of inherent presence of hydroxyl groups in its structure, which impart the natural functionality in the castor oil. Castor oil can be utilized for manufacturing polyurethane due to its inherent structural beauty in terms of presence of OH groups in its structure along with the functionality of 2.7. Hence an attempt has been made by various researchers to utilize castor oil as a renewable source of polyol for synthesizing PU foam. Castor oil is natural, renewable and sustainable, biodegradable and low price as compare to petroleum polyol. Keywords: Castor oil, hydroxyl groups, polyurethane, polymerization, renewable
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