Journal
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
Volume 22, Issue 6, Pages 557-567Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1023666X.2017.1343175
Keywords
Carbon nano-onion; corrosion protection; polyaniline nanoparticle; polybenzimidazole; polyimide
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This effort reports on novel polyimide (PI) and polybenzimidazole (PBI)-based system for corrosion protection. Polyaniline nanoparticle was generated in situ in polybenzimidazole (PBI-in-PANI). Carbon nano-onion (CNO) was opted as nanofiller. Ultimately, hybrid system of polyimide/polybenzimidazole-in situ-polyaniline nanoparticle/carbon nano-onion (PI/PBI-in-PANI/CNO) was developed. Temperature dependency of molecular weight of PBI was checked using gel permeation chromatography. Field emission scanning electron microscopy revealed fine network like morphology for PI/PBI-in-PANI/CNO nanocomposite. Transmission electron microscopy depicted small spherical PBI-in-PANI nanoparticle and CNO in matrix. At 180 degrees C, conductivity of PI/PBI-in-PANI and PI/PBI-in-PANI/CNO series was enhanced in range of 1.6-2.8 and 3.0-3.3Scm(-1). About 5% PI/PBI-in-PANI/CNO nanocomposite coating enhanced corrosion protection effect up to 70%.
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