Corrosion resistance enhancement and superhydrophobic surface realization of flake magnetic particles with organic polyolefin copolymer modification. (March 2022)

• Record Type: Journal Article
• Authors: Yang, Guang; Hu, Qingqing; Yang, Wenhao; Zeng, Wangyi; Jiang, Yanxin; Chai, Liang; Deng, Longjiang
• Is Part Of: Materials today communications. Volume 30(2022)
• Publication Date: 2022-03
• Subjects: Carbonyl iron -- Polyolefin -- Surface modification -- Corrosion -- Superhydrophobic; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2021.103111
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: Carbonyl ion (CI) based magnetic particles are widely applied magnetic material. However, they are active metal and easily reacted with corrosive matters. Exploration of methods and techniques to reduce their reaction activity under corrosive environment never ceases. Herein, organic polyolefin copolymer maleic anhydride grafted polypropylene (PP-g-mah) is adopted as protection layer to chemically bond with flake carbonyl iron (FCI) particles. The hydrophobic PP-g-mah anchored FCI particles effectively integrates the natural barrier effect of stable polyolefin layer for resisting corrosion such thermal oxidation, electrochemical reaction, and chemical corrosion. Meanwhile, the hydrophobic nature of the PP-g-mah modified FCI particles can be utilized as useful component for preparing superhydrophobic flexible surface. This work provides a novel example to chemically coupling stable water resisting polymeric materials on FCI particles in a controlled manner to enhance the FCI particles anticorrosion ability. With future work of optimizing the coating uniformity and wettability, this work also paves the way for future development of corrosion resistive FCI based composites. Graphical Abstract: Stable and hydrophobic polyolefin modified flake carbonyl iron particles showed comprehensively enhanced corrosion resistance in terms of thermal oxidation, electrochemical corrosion as well as chemical corrosion. ga1 Highlights: Hydrophobic polyolefin modification of flake magnetic particles via covalent linkage for anticorrosion. Enhanced corrosion resistance in terms of thermal oxidation, electrochemical corrosion as well as chemical corrosion. Ability for the modified flake magnetic particles for constructing superhydrophobic surface.