Polyurethanes from Vegetable Oils
2008; Taylor & Francis; Volume: 48; Issue: 1 Linguagem: Inglês
10.1080/15583720701834224
ISSN1558-3724
Autores Tópico(s)Polymer composites and self-healing
ResumoVegetable oils are excellent but very heterogeneous renewable raw materials for polyols and polyurethanes. This review discusses the specific nature of vegetable oils and the effect of their structures on the structure of polyols and polyurethanes. One section is dedicated to polyols for rigid and flexible foams and methods of their preparation such as direct oxidation of oils, epoxidation followed by ring opening, hydroformylation, ozonolysis, and transesterification. The next section deals with preparation and structure‐property relationships in polyurethanes from different groups of polyols, different isocyanates, and different degrees of crosslinking. The final section covers the environmental aspects of bio‐based polyurethanes, i.e., thermal stability, hydrolytic stability, and some aspects of biodegradability. Keywords: soy‐polyolpolyurethanenetworksstructure Acknowledgment I am indebted to Dr. Ivan Javni, Dr. Andrew Guo, Dr. Mihail Ionescu, Alisa Zlatanic, Wei Zhang, Dr. Yijin Xu and staff and students at Pittsburg State University for the experimental work reviewed in this paper.
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