The Cross-Linked Bio-Based Polyols Prepared Using Vegetable Oil Based Epoxidised Oils
Venkatesh Desappan , Jaisankar Viswanathan

Vegetable oils are considered as promising raw materials to be used in the synthesis of high functionality polyols. The prepared polyols can be used to produce high quality products such as polyurethanes and poly (ether urethanes) etc., A series of bio-based triglyceride vegetable oils such as Sesamum indicum (sesame oil), Arachis hypogeae(peanut oil), Azadirachta indica (neem oil), Jatropha curcas (jatropha oil), Madhuca longifolia (mahua oil) used to prepare high molecular weight polyols. The effect of carboxyl to epoxy ratio, facilitating the epoxy groups were ring opened by castor oil fatty diol. The resulting epoxidised oil and bio- polyols molecular structures were confirmed by Fourier Transform Spectroscopy (FT-IR), Proton Nuclear Resonance Spectroscopy (1H NMR) and Carbon Nuclear Resonance Spectroscopy (13C NMR). The effect of cross-linking on the molecular weight of the polyols were determined by Gel Permeation Chromatography (GPC). The stability and decomposition of the polyols were characterized by thermogravimetric analysis (TGA). The viscosity of the polyols characterized by Rheometry and the flow rate of the polyols were derived from power law model.

Full Text: PDF     DOI: 10.15640/jcb.v6n1a3