Journal
EUROPEAN POLYMER JOURNAL
Volume 85, Issue -, Pages 620-634Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2016.03.042
Keywords
Renewable resource; Epoxy cardanol; Water based polyols; Aqueous polyurethane; Coating
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Commercially aqueous 2K-Polyurethane coatings are developed by reacting water based polyols with water based polyisocyanates. in a stoichionietric amount for number of end applications such as coatings, adhesives and paints. These water based polyols are mainly derived from petroleum based raw materials. Due to growing environmental and health related concerns on the use of petroleum based feed stocks; the exploration of renewable resources can be the only obvious option. The worldwide demand on the use of renewable materials is mainly due to the fact that these materials are non-toxic, non-poisonous, abundantly available and eco-friendly as compared to fossil resources. In this regard, we have utilized one of the derivatives of cardanol, as a potential renewable resource to develop water based polyols for aqueous 2K-Polyurethane coatings. These polyols when cured with commercially available water based polyisocyanates resulted in crosslinked films. The developed polyols and cured coatings thereof were characterized by number of instrumental techniques like FTIR, NMR, DSC, TGA, EIS, and Tafei. The cured coatings were also characterized for general coatings properties to study the performance properties of cured coatings. (C) 2016 Elsevier Ltd. All rights reserved.
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