Issue Description


Authors : SYNTHESIS OF GREEN POLYMERIC MATERIAL AND ITS APPLICATION IN DEVLOPMENT OF ECOFRIENDLY ANTIFOULING COATINGS.

Page Nos : 192-201

Description :
The maintenance of ship bottom by using antifouling coatings is of great economic importance. Organisms settling and growing upon the hull destroy its smooth, streamlined contour which marine architects have designed with imagination and skill. After having dry dock, a ships underwater surface progressively become rough, which is responsible for friction, with the result that fuel consumption increases to maintain a given speed. Accordingly, new antifouling paints featuring organometallic polymer (OMP) toxicants have been developed at a U.S. Government laboratory in response to these requirements. Tributyltin (TBT) is the active chemical reagent present in conventional antifouling paints which prevent the growth of fouling organism. Later it was found that TBT containing paints have toxic effect on human beings, wildlife and aquatic life. Due to these toxic effects the use of TBT is now restricted. In this research paper the toxicity of TBT has been studied and alternative eco-friendly substitutes for TBT are proposed. Several naturally occurring biocompounds such as cashew nut shell liquid (CNSL), rosin based alkyd resin and lemon grass oils have an excellent antifouling activities.We have prepared two types of resin,alkyd and CNSL, several formulation of antifouling paints based on above resin has been prepared. We have also compared these formulations with commercial tin acrylate paint. Prepared formulations are free from tin and also exhibit excellent physicochemical and anti microbial property.

Date of Online: 30 Jan 2014