Poly(ethylene glycol)-based thiol-ene hydrogel coatings-curing chemistry, aqueous stability, and potential marine antifouling applications.

Title Poly(ethylene glycol)-based thiol-ene hydrogel coatings-curing chemistry, aqueous stability, and potential marine antifouling applications.
Publication Type Journal Article
Year of Publication 2010
Authors Lundberg, P, Bruin, A, Klijnstra, JW, Nyström, AM, Johansson, M, Malkoch, M, Hult, A
Journal ACS Appl Mater Interfaces
Volume 2
Issue 3
Pagination 903-12
Date Published 2010 Mar
ISSN 1944-8244
Keywords Cell SurvivalCrystallizationFeasibility StudiesHardnessHydrogelsMaterials TestingPolyethylene GlycolsProteobacteriaSulfhydryl CompoundsSurface PropertiesWaterWater Microbiology
Abstract Photocured thiol-ene hydrogel coatings based on poly(ethylene glycol) (PEG) were investigated for marine antifouling purposes. By varying the PEG length, vinylic end-group, and thiol cross-linker, a library of hydrogel coatings with different structural composition was efficiently accomplished, with or without ester linkages. The thiol-methacrylate and thiol-allyl systems were evaluated with respect to curing, degradation, as well as antifouling properties. Methacrylate-based systems exhibited homopolymerization, whereas allyl-based systems reacted more selectively through thiol-ene couplings reaction. The ester-free hydrogels elucidated higher hydrolytic stability whereas longer PEG chains accelerated the degradation process. The antifouling properties were evaluated by protein adsorption with Bovine serum albumin (BSA) and bioassays with the marine bacteria, Cobetia marina, and the marine diatom, Amphora coffeaeformis; in all tests, longer PEG lengths improved the antifouling properties.
DOI 10.1021/am900875g
Alternate Journal ACS Appl Mater Interfaces
PubMed ID 20356297

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