Abstract Superhydrophobic silicone fouling-release (FR) nanocomposite coatings have gained considerable interest as an eco-friendly and economic solution to combat biofouling problems of ship hulls. In this work, graphene oxide anchored with alumina nanorods (GO-Al2O3 NRs) sheet hybrids were fabricated via a two-phase method. A ternary nanocomposite series of elastomeric silicone/GO-Al2O3 hybrid NRs sheet coating was developed via solution-casting method. γ–Al2O3 NRs of 150 nm in length and 20 nm in … Continue reading Silicone/graphene oxide sheet-alumina nanorod ternary composite for superhydrophobic antifouling coating

Advances in nanomaterials science are associated with developments fabrication methods in terms of energy saving, environment friendliness, and low cost. Self-cleaning nanocoatings with fouling release (FR) mechanism have been extensively investigated because of their non-stick, non-leachant, ecological, and economic advantages. Herein, we successfully modeled a series of self-cleaning technologies by using elastiometric siloxane polymer/nano-magnetite composites. The nanocomposite systems are dynamic non-stick surfaces and deter any … Continue reading Eco-friendly design of superhydrophobic nano-magnetite/silicone composites for marine foul-release paints

Novel photocurable ternary polymer networks were prepared by incorporating N-(4-hydroxy-3-methoxybenzyl)-acrylamide (HMBA) into a cross-linked thiol−ene network based on poly(ethylene glycol) diacrylate (PEGDA) and (mercaptopropyl) methylsiloxane homopolymers (MSHP). The ternary network materials displayed bactericidal activity against Escherichia coli, Staphylococcus aureus, and reduced the attachment of marine organism Phaeodactylum tricornutum. Extensive soaking of the polymer networks in aqueous solution indicated that no active antibacterial component leached out … Continue reading Capsaicin-Inspired Thiol−Ene Terpolymer Networks Designed for Antibiofouling Coatings

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) – polydimethyl siloxane – 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 … Continue reading Zwitterionic–polyurethane coatings for non-specific marine bacterial inhibition: A nontoxic approach for marine application

Crude glycerol, a waste stream of the biodiesel production process, is low-cost renewable feedstock for the production of chemicals and polymers. In this study, polyurethane (PU) adhesives were synthesized from crude glycerol-based polyols (CG-based polyols) for wood bonding applications. Effects of different variables, including hydroxyl values of CG-based polyols, chain extenders, and the molar ratio of NCO/OH on the properties of PU adhesives were investigated. … Continue reading Synthesis and properties of polyurethane wood adhesives derived from crude glycerol-based polyols

Marine biofouling is one of the most challenging problems today. Silicone polymer based coatings with low surface energy and elastic modulus can effectively inhibit or release biofouling. However, their non-repairable property and poor antifouling ability on static conditions limit their applications. Here, we report a self-repairing coating consisting of poly(dimethylsiloxane) based polyurea (PDMS-PUa) and a small amount of organic antifoulant (4,5-dichloro-2-n-octyl-4-isothiazolin-3-one) (DCOIT). The coating can … Continue reading Self-repairing silicone coating for marine anti-biofouling