Journal ArticleDOI
Polyurethanes from Vegetable Oils
TLDR
In this article, the specific nature of vegetable oils and the effect of their structures on the structure of polyols and polyurethanes are discussed and the environmental aspects of bio-based polyureths are discussed.Abstract:
Vegetable 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.read more
Citations
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Journal ArticleDOI
Conversion of biomass to selected chemical products
TL;DR: This critical review provides a survey illustrated by recent references of different strategies to achieve a sustainable conversion of biomass to bioproducts to examine critically the green character of conversion processes.
Journal ArticleDOI
Conversion of Biomass into Chemicals over Metal Catalysts
Journal ArticleDOI
Thermal stability and flame retardancy of polyurethanes
TL;DR: The thermal stability and flame retardancy of polyurethanes is reviewed in this article, where a detailed description of TGA, TGA-MS and TGAFTIR methods for studying the decomposition mechanism and kinetics is also provided.
Journal ArticleDOI
Polyurethane types, synthesis and applications – a review
John O. Akindoyo,Mohammad Dalour Hossen Beg,Suriati Ghazali,Muhammad Remanul Islam,Nitthiyah Jeyaratnam,A. R. Yuvaraj +5 more
TL;DR: In this paper, the chemistry, types, and synthesis of polyurethanes (PUs) are discussed, with a specific emphasis on their recyclability and recoverability, and information is provided on the environmental friendliness of the PU.
Journal ArticleDOI
Thermosetting (bio)materials derived from renewable resources: A critical review
Jean-Marie Raquez,Jean-Marie Raquez,Mylene Deleglise,Marie-France Lacrampe,Patricia Krawczak +4 more
TL;DR: In this paper, a broad-brush approach over the potential opportunities and drawbacks concerning the use of renewable feedstock in the design of some commonly used networks such as phenolics, epoxy, polyester and polyurethane resins is discussed.
References
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Journal ArticleDOI
Transesterification of vegetable oils: a review
TL;DR: In this article, the transesterification of vegetable oils with methanol as well as the main uses of the fatty acid methyl esters are reviewed. But, the anchored catalysts show leaching problems.
Journal ArticleDOI
New Syntheses with Oils and Fats as Renewable Raw Materials for the Chemical Industry.
Ursula Biermann,Wolfgang Friedt,Siegmund Lang,Wilfried Lühs,Guido Machmüller,Jürgen O. Metzger,Mark Rüsch gen. Klaas,Hans J. Schäfer,Manfred P. Schneider +8 more
TL;DR: Of considerable significance is that, with the use of gene technology, natural oils and fats have been improved significantly and will be improved still further, insofar as they show a more uniform and often unusual fatty acid spectrum.
Journal ArticleDOI
Influence of molecular weight and degree of crosslinking on the specific volume and glass temperature of polymers
T. G. Fox,S. Loshaek +1 more
TL;DR: In this article, the specific volume-temperature-molecular weight (v-T-M) relationship for a homologous series of polymers was derived from the v-T curves for the monomer and the polymer of infinite molecular weight.
Book
Polyurethanes in Biomedical Applications
TL;DR: Polyurethanes in Biomedical Applications Cardiovascular Applications Catheters Pacemaker Lead Insulation Vascular Prostheses Heart Valves Cardiac Assist Devices Artificial Organs Artificial Heart Hemodialysis Artificial Lung/Blood Oxygenation Hemoperfusion Artificial Pancreas Blood Tubing Blood Filters
Journal ArticleDOI
Thermal stability of polyurethanes based on vegetable oils
TL;DR: In this paper, a series of polyurethanes from polyols derived from soybean, corn, safflower, sunflower, peanut, olive, canola, and castor oil were prepared, and their thermal stability in air and nitrogen assessed by thermogravimetric analysis, FTIR, and GC/MS.