Date of Award
Fall 12-15-2024
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Chemistry
First Advisor
Dr. Ram Gupta
Second Advisor
Dr. Khamis Siam
Third Advisor
Dr. Anuradha Ghosh
Keywords
Biopolymers, Sustainability, Polymer synthesis, Chemical properties, Renewable resources, Material characterization
Abstract
The increasing demand for green materials has inspired in-depth research into biobased polymers; among these polymers, polyurethanes stand out because of their widest range of applications: coatings, adhesives, and biomedical devices. The subject of this paper is the preparation of bio-based polyurethane films based on the polyols synthesized from renewable feedstocks such as limonene, geraniol, and soybean oil. Limonene and geraniol were chemically modified from natural sources such as citrus fruits and essential oils to high-functionality polyols. Characterization of such polyols showed that geraniol had the highest hydroxyl (OH) value and thus geraniol-based polyurethane films were highly influencing in reactivity and mechanical properties. The mechanical tests showed that PUs based on neat polyol presented higher tensile strength and hardness than those produced from the blends or soybean oil-based polyols. Besides, according to TGA, the addition of limonene and geraniol enhanced the thermal stability of polyurethane films, allowing their use in more aggressive applications. The present work emphasizes that these bio-based polyols are viable, sustainable alternatives to conventional petrochemical-derived polyols and offer a route for environmentally benign advances in the polymer industry. This will contribute to the ongoing quest for greener materials while maintaining the high-performance requirements typical for diverse industrial applications.
Recommended Citation
PATEL, SAURAVKUMAR RAJESHBHAI, "EFFECTS OF MODIFICATION IN LIMONENE AND GERANIOL ON THE PROPERTIES OF THERMAL CURED POLYURETHANE FILMS" (2024). Electronic Theses & Dissertations. 826.
https://digitalcommons.pittstate.edu/etd/826
