Biobased dimer fatty acid containing two pack polyurethane for wood finished coatings
| Autor: | Vikas V. Gite, Sandip D. Rajput, Pramod P. Mahulikar |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Thermogravimetric analysis Diethanolamine Materials science Condensation polymer General Chemical Engineering Organic Chemistry Fatty acid Surfaces Coatings and Films Gel permeation chromatography chemistry.chemical_compound Oleic acid chemistry Materials Chemistry Organic chemistry Diethanolamide Polyurethane |
| Zdroj: | Progress in Organic Coatings. 77:38-46 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2013.07.020 |
| Popis: | Novel two pack polyurethane wood finished coatings are prepared from renewable sources, such as vegetable oil based fatty acid and dimer fatty acid. In actual experimental part oleic acid was reacted with diethanolamine to obtain amide which was on condensation polymerization with dimer fatty acid converted into the polyesteramide polyol. These are all being used to prepare polyurethanes. The functional and structural elucidation of dimer fatty acid based polyesteramide and diethanolamide were carried out by end group analysis, spectral studies such as FTIR and 1H NMR. Average molar masses of the polyesteramide were estimated by gel permeation chromatography (GPC). The polyesteramide was used in the preparation of wood finished polyurethane coatings by reacting it with aromatic diisocyanates. Thermogravimetric analysis (TGA) was used to study the thermal behavior of coatings. Physico-chemical and coating properties of the coatings were investigated by using standard methods. The results indicated that the bio-based wood finished PU coatings provided good mechanical, weather resistance as well possessed adequate coating properties for wood surface protections. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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