Preparation and properties of waterborne polyurethane-silane: A promising antifouling coating

Abstract

Environmentally friendly waterborne polyurethane-silane (WBPUSi) resins were prepared through a prepolymer process using N- [3-(trimethoxysilyl)propyl]-ethylenediamine (TMSiP-EDA), which acted as both a chain extender and crosslinker. The TMSiP-EDA amine group reacted with the NCO group of the NCO-terminated prepolymer and the methoxy group induced branching with Si-O-Si via a hydrolysis and condensation reaction in water dispersion. The thermal stability, tensile strength and Young's modulus of the synthesized resins were superior to those of conventional WBPU. A selected WBPUSi-resin was used in foul release coating to protect the surface from marine fouling. The foul release property of the resin was examined after immersion in a marine environment for three months. WBPUSi showed improved protection against marine fouling.

Development of Poly(2-Methacryloyloxyethyl Phosphorylcholine)-Functionalized Hydrogels for Reducing Protein and Bacterial Adsorption

“…The surface functionalization utilizing second hydrophilic polymers such as polysaccharides (e.g., dextran and hyaluronic acid and) [17,18], poly(ethylene glycol) (PEG) [19][20][21][22], and biomembranemimicking zwitterionic polymers [e.g., 2-methacryloyloxyethyl phosphorylcholine (MPC) and carboxybetaine methacrylate (CBMA)] [23][24][25] is one such strategy to develop such "protein-resistant" biomaterials. These polymers are incorporated on biomaterial surfaces using a diverse set of surface coating and modification techniques, including physical adsorption, graft polymerization, self-assembled monolayers (SAMs), layer-by-layer assembly, interpenetrating polymer network (IPN), surface-initiated atom transfer radical polymerization (ATRP), and conventional free-radical polymerization [26][27][28][29][30][31][32][33][34].…”

Waterborne Thermosetting Polyurethane Composites

“…Marine biofouling is a serious issue to all immersed substrates in sea water such as ship hulls, pipe lines, offshore platforms, and bridges. Rahman et al developed a waterborne polyurethane-silane protective coating for marine fouling by a sol-gel process [24]. The prepolymer was developed from PTMG, H 12 MDI, and DMPA and after neutralization; prepolymer was capped at one end with TMSiP-EDA, which can act as both chain extender and crosslinker.…”

Evaluation of a Hydrophobic Coating Agent Based on Cellulose Nanofiber and Alkyl Ketone Dimer

“…Research is being actively conducted into eco-friendly repair materials that prevent moisture penetration in marine structures, as well as preventing surface pollution [ 21 , 22 , 23 , 24 ].…”