SYNTHESIS OF GLYCEROL BASED NOVEL MONOMER FOR NONISOCYANATE POLYURETHANE (NIPU): bis((2-oxo-1,3-dioxolan-4-yl)methyl) (methylene bis(4,1-phenylene)) dicarbamate

Abstract

ABSTRACT Polyurethanes are the versatile, responsive and long-lasting fabricated material that can replace paints, cotton, rubber, metal or wood in various applications across all fields such as packaging, decorative goods, foam, adhesives, engineering plastic and biomedical applications etc. Polyurethanes are generally synthesized by reacting di-isocyanates with diols resulting in urethane linkages. There are some challenges of isocyanate polyurethane as the raw materials used MDI and TDI are hazardous for health and environment. The exposure to isocyanate causes irritation of skin and mucous membranes, chest tightness, and difficulty in breathing. Isocyanates compounds are carcinogens and are reported to cause cancer. The present studies has been carried out to synthesize a novel monomer bis((2-oxo-1,3-dioxolan-4-yl)methyl) (methylene bis(4,1-phenylene)) dicarbamate for the preparation of Non Isocyanate Polyurethane (NIPU), which is environment friendly. For this purpose glycerol is used as the main raw material. Glycerol is generally produced as a byproduct of various industries. The huge availability and biocompatibility of glycerol makes it a readily available material. So we have been attracted to utilize this huge available material for a better mankind application. In this research work, we had developed a novel glycerol based monomer: bis((2-oxo-1,3-dioxolan-4-yl)methyl) (methylene bis(4,1-phenylene)) dicarbamate. This monomer was reacted with various diamines and is used for NIPU synthesis. The formation of Polyurethane was confirmed by FT-IR spectroscopy. Key Words: Polyurethane, MDI, TDI, Glycerol, NIPU etc.