Iranian Association of Chemical Engineering (IAChE) Iranian Journal of Chemical Engineering (IJChE) 1735-5397 5 2 2008 04 01 Preparation and Characterization of Polyaniline/CaCO3 Composite and its Application as Anticorrosive Coating on Iron 45 54 11280 EN A. Olad Polymer Composite Research Laboratory, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. A. Rashidzadeh Journal Article 2015 10 19 <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>Composites of polyaniline with calcium carbonate particles (PANI/CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3</em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>) with</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>different CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>content (0-40 %w/w) were prepared. Two different methods of in situ</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>polymerization and solution mixing were used for PANI/CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>composite preparation.</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>The composite was characterized using FT-IR, SEM, electrical conductivity</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>measurement and cyclic voltammetry techniques. The incorporation of CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>particles</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>in polyaniline matrix in both methods of composite preparation was confirmed by FTIR results. Electrical conductivity measurements showed that the conductivity of the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>composite decreases by increasing the CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>loading in polyaniline. Also, the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>anticorrosive property of the PANI/CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>composite coating on iron samples was</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>investigated in various corrosive environments. According to the results, the corrosion</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>rate or corrosion current of PANI/CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>composite coated iron coupons was much</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>lower (96.75%) than polyaniline coated samples. Also, results showed that the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>corrosion current of composite coated samples varies with the variation of the CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>content in composite coating, and the optimum CaCO</em><span style="font-size: 7pt; color: #000000; font-style: normal; font-variant: normal;"><em>3 </em><span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>content of composite coating to</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>achieve the best anticorrosive performance on iron is 10 %w/w.</em></span></span></span></span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /><br class="Apple-interchange-newline" /></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span> https://www.ijche.com/article_11280_6f46dd176364ccec308c2760189a4605.pdf