Journal
PROGRESS IN ORGANIC COATINGS
Volume 83, Issue -, Pages 19-25Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2015.01.020
Keywords
Polyurethane; Cardanol; Thiol-ene; Polyol
Funding
- NSFC of China [51263011]
- Science Funds of Jiangxi Province [20122BAB213010, 20142BAB203016]
- Science Funds of the Education Office of Jiangxi Province [GJJ13575]
- Project of Jiangxi Youth Scientist [20112BCB23018]
- Sci-Tech Innovative Team Project of JXSTNU [2013010]
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Industrial-grade cardanol and 2-mercaptoethanol were reacted to generate hydroxyl-functionalized cardanol by UV, free-radical-initiated thiol-ene coupling between the double bond moieties of the cardanol long carbon side chain and thiol functional groups. The average hydroxyl number of the hydroxyl-functionalized cardanol was controlled by reaction time, with the hydroxyl values of this ranging within 168-201 mg KOH g(-1). This cardanol was then used as a polyol to prepare cardanol-based polyurethane with hexamethylene diisocyanate and a NCO/OH ratio of 1. To compare the effect of cardanol-based polyols with the properties of cardanol-based polyurethane, cardanol modified with 10-undecylenate was used as a raw material to prepare cardanol-based polyols, including the long carbon chain of 10-undecylenate. All properties were examined, and data revealed that cardanol-based polyols including this long carbon chain can improve the hydrophobic and mechanic properties of the cardanol-based polyurethane. (C) 2015 Elsevier B.V. All rights reserved.
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