کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
692790 889853 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and corrosion resistance of nanostructured PVC/ZnO–polyaniline hybrid coating
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Preparation and corrosion resistance of nanostructured PVC/ZnO–polyaniline hybrid coating
چکیده انگلیسی

ZnO–polyaniline nanocomposite with core–shell nanostructure was prepared by in situ polymerization of aniline monomer in the presence of ZnO nanoparticles. Fourier transform infrared spectroscopy, X-ray diffraction patterns, field emission scanning electron microscopy and transmission electron microscopy techniques were used to characterize the composition and structure of ZnO–polyaniline nanocomposite. d.c. electrical conductivity measurement showed that the electrical conductivity of ZnO–polyaniline nanocomposite pellets is higher than that of pristine polyaniline and ZnO nanoparticles pellets. The addition of ZnO nanoparticles causes to the increasing of polyaniline electrical conductivity. ZnO–polyaniline nanocomposite was mixed with polyvinyl chloride (PVC) through a solution mixing method and the three components PVC/ZnO–polyaniline hybrid material was applied as coating on iron coupon by the solution casting method. Corrosion protection efficiency of PVC/ZnO–polyaniline hybrid coating on iron coupons was studied by open circuit potential and Tafel techniques in 3.5% NaCl solution as corrosive environment. According to the results, PVC/ZnO–polyaniline hybrid nanocomposite coating showed dramatically increased corrosion protection effect on iron samples compared to that of uncoated iron coupon and pure polyaniline anticorrosive coating. It was found that ZnO nanoparticles improve the barrier and electrochemical anticorrosive properties of polyaniline and the addition of polyvinyl chloride increases the barrier effect of polyaniline coating.


► ZnO–polyaniline nanocomposite was prepared by in situ polymerization method.
► The composition and structure of nanocomposite were characterized.
► Conductivity of nanocomposite was measured higher than that of its components.
► The PVC/ZnO–polyaniline hybrid material was applied as coating on iron coupon.
► Hybrid coating showed high anticorrosive performance in saline environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 76, Issue 1, January 2013, Pages 113–118
نویسندگان
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