Functional polymer brushes via surface-initiated atom transfer radical graft polymerization for combating marine biofouling.


Journal Article

Dense and uniform polymer brush coatings were developed to combat marine biofouling. Nonionic hydrophilic, nonionic hydrophobic, cationic, anionic and zwitterionic polymer brush coatings were synthesized via surface-initiated atom transfer radical polymerization (SI-ATRP) of 2-hydroxyethyl methacrylate, 2,3,4,5,6-pentafluorostyrene, 2-(methacryloyloxy)ethyl trimethylammonium chloride, 4-styrenesulfonic acid sodium and N,N'-dimethyl-(methylmethacryloyl ethyl) ammonium propanesulfonate, respectively. The functionalized surfaces had different efficacies in preventing adsorption of bovine serum albumin (BSA), adhesion of the Gram-negative bacterium Pseudomonas sp. NCIMB 2021 and the Gram-positive Staphylococcus aureus, and settlement of cyprids of the barnacle Amphibalanus amphitrite (=Balanus amphitrite). The nonionic hydrophilic, anionic and zwitterionic polymer brushes resisted BSA adsorption during a 2 h exposure period. The nonionic hydrophilic, cationic and zwitterionic brushes exhibited resistance to bacterial fouling (24 h exposure) and cyprid settlement (24 and 48 h incubation). The hydrophobic brushes moderately reduced protein adsorption, and bacteria and cyprid settlement. The anionic brushes were least effective in preventing attachment of bacteria and barnacle cyprids. Thus, the best approach to combat biofouling involves a combination of nonionic hydrophilic and zwitterionic polymer brush coatings on material surfaces.

Full Text

Duke Authors

Cited Authors

  • Yang, WJ; Neoh, K-G; Kang, E-T; Lee, SSC; Teo, SL-M; Rittschof, D

Published Date

  • January 2012

Published In

Volume / Issue

  • 28 / 9

Start / End Page

  • 895 - 912

PubMed ID

  • 22963034

Pubmed Central ID

  • 22963034

Electronic International Standard Serial Number (EISSN)

  • 1029-2454

International Standard Serial Number (ISSN)

  • 0892-7014

Digital Object Identifier (DOI)

  • 10.1080/08927014.2012.719895


  • eng