Date of Award

Fall 12-10-2021

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Dr. Ram Gupta

Second Advisor

Dr. Khamis Siam

Third Advisor

Dr. Charles Neef

Fourth Advisor

Dr. John Franklin

Abstract

The synthesis of flame retardant polyurethane (PU) foam was carried out using two different flame retardants, such as triethyl phosphate (TEP) and triphenyl phosphate (TPP). The thermal and mechanical characteristics of the foam were analyzed. The obtained TGA results confirmed that the flame retardant acts in the gaseous form to stop the fire. All the prepared samples displayed excellent closed cell content, which was above 90 %. The burning time were reduced from 80 s to 7.5 s with the weight loss 3.2% of for sample E-12 (19.29 % TEP) and from 80 s to 11 s with the weight loss of 3% for the sample E-14 (26.4% TPP). Thus, this study displayed the potential use of corn oil-based polyol for industrial preparation of rigid polyurethane foams. Furthermore, the addition of low amount of TEP and TPP can exceptionally increase the flame retardancy of the foam. Thus, this study shows that corn oil-based polyol can be substitute the petrochemical-based polyols for the industrial applications while retaining almost the same thermomechanical properties.

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