Physical properties of a soy-based polyol as polyurethane coatings

• Published in: AIP Conference Proceedings
• Main Author: Hussain N.I.A.M.; Bonnia N.N.; Ismail S.N.S.; Ramli R.; Surip S.N.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics Inc. 2018
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85055586442&doi=10.1063%2f1.5062684&partnerID=40&md5=fac04bbb3715bc4852db24ca003faa6d

This research focused on synthesis of epoxidized soybean oil in order to produce soy-based polyol which later was used to produce soy-based polyurethane. Soy-based polyol was produced through alcoholysis process of ESBO with glycerol (1:3 and 1:5) molar ratio. Polyol A had a ratio of 1:3 while polyol B had 1:5 ratio. The polyols were investigated by IR spectra and viscosity test. The polyols then were used to produce three formulation of polyurethane samples which were 20MDI:80polyol, 30MDI:70polyol and 40MDI:60polyol. The polyol samples were investigated by IR spectra, hardness test and gel content test. From FTIR result, polyol A and polyol B showed the incorporation of hydroxyl group from glycerol at 3430.26 cm -1 and 3281cm -1. There was a formation of N-H group in PU 1 and PU 4 at 3451 cm -1 and 3448 cm -1. The viscosity of polyol A was higher compared to polyol B. PU 1, PU 2 and PU 3 which made up from polyol A had higher hardness and gel content compared to PU 4, PU 5 and PU 6 which made up from polyol B. © 2018 Author(s).