Zwitterionic–polyurethane coatings for non-specific marine bacterial inhibition: A nontoxic approach for marine application. (November 2017)

• Record Type: Journal Article
• Authors: Anthony Yesudass, S.; Mohanty, Smita; Nayak, Sanjay K.; Rath, Chandi C.
• Is Part Of: European polymer journal. Volume 96(2017)
• Page Start: 304
• Page End: 315
• Publication Date: 2017-11
• Subjects: Zwitterionic triblock copolymer -- Functionalized acrylic polyol -- Polyurethane -- Non-specific marine bacteria; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; Polymerization; Polymers; Periodicals; Electronic journals; 547.705
• DOI: 10.1016/j.eurpolymj.2017.09.019
• Languages: English
• ISSNs: 0014-3057

Abstract

Graphical abstract: Highlights: Synthesis of zwitterionic tri-block copolymer (ZTC) through ATRP method. Synthesis of silane functionalized acrylic polyol. Formulation of zwitterionic-polyurethane coatings using H12 MDI. Coatings are thermally good stability and hydrophobic character. Coatings showed excellent non-specific marine bacterial inhibition properties. Abstract: The present work reports synthesis and development of zwitterionic tri-block copolymer-polyurethane (ZTC-PU) coatings which are thermally stable and have hydrophobic properties which can be used for marine applications. The zwitterionic tri-block copolymer (ZTC) (poly(sulfobetaine methacrylate) - polydimethylsiloxane - poly(sulfobetaine methacrylate), polySBMA-block-PDMS-block-polySBMA) was synthesized by ATRP (atom transfer radical polymerization) method. Apart from this, the facile synthesis of silane functionalized acrylic polyol was formulated with 4, 4′- Methylene dicyclohexyl diisocyanate (H12 MDI) for the development of polyurethane (PU) coatings. Different weight ratios of ZTC was incorporated in PU to obtain a zwitterionic tri-block copolymer-polyurethane (ZTC-PU) coatings. The ZTC-PU coating exhibit good thermal stability and hydrophobic property. The coating showed excellent non-specific marine bacterial inhibition property along with good stability against gram positive Staphylococcus aureus ( S. aureus ) and gram negative Escherichia coli ( E. coli ), Pseudomonas aeruginosa ( P. aeruginosa ) microbial strains. This design method reveals the development of zwitterionic-polyurethane coatings with higher amount of zwitterionic moiety in the coating system, that will be efficient and eco-friendly technology for marine bio-fouling application.