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Title: Triblock Copolymers with Grafted Fluorine-Free Amphiphilic Non-Ionic Side Chains for Antifouling and Fouling-Release Applications

Abstract

Fluorine-free, amphiphilic, nonionic surface active block copolymers (SABCs) were synthesized through chemical modification of a polystyrene-block-poly(ethylene-ran-butylene)-block-polyisoprene triblock copolymer precursor with selected amphiphilic nonionic Brij and other surfactants. Amphiphilicity was imparted by a hydrophobic aliphatic group combined with a hydrophilic poly(ethylene glycol) (PEG) group-containing moiety. The surfaces were characterized by dynamic water contact angle, atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and near edge X-ray absorption fine structure (NEXAFS) analysis. In biofouling assays, settlement (attachment) of both spores of the green alga Ulva and cells of the diatom Navicula on SABCs modified with Brij nonionic side chains was significantly reduced relative to a PDMS standard, with a nonionic surfactant combining a PEG group and an aliphatic moiety demonstrating the best performance. Additionally, a fouling-release assay using sporelings (young plants) of Ulva and Navicula suggested that the SABC derived from nonionic Brij side chains also out-performed PDMS as a fouling-release material. Good antifouling and fouling-release properties were not demonstrated for the other two amphiphilic surfaces derived from silicone and aromatic group containing nonionic surfactants included in this study. The results suggest that small differences in chemical surface functionality impart more significant changes with respect to the antifouling settlement and fouling-release performancemore » of materials than overall wettability behavior.« less

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1042001
Report Number(s):
BNL-97679-2012-JA
Journal ID: ISSN 0024-9297; TRN: US201212%%412
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Macromolecules
Additional Journal Information:
Journal Volume: 44; Journal Issue: 12; Journal ID: ISSN 0024-9297
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; AROMATICS; ATOMIC FORCE MICROSCOPY; BIOLOGICAL FOULING; COPOLYMERS; DIATOMS; FINE STRUCTURE; MODIFICATIONS; PERFORMANCE; PRECURSOR; SILICONES; SPORES; SURFACTANTS; WATER; WETTABILITY; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Cho, Y, Sundaram, H, Weinman, C, Paik, M, Dimitriou, M, Finlay, J, Callow, M, Callow, J, Kramer, E, and Ober, C. Triblock Copolymers with Grafted Fluorine-Free Amphiphilic Non-Ionic Side Chains for Antifouling and Fouling-Release Applications. United States: N. p., 2011. Web. doi:10.1021/ma200269s.
Cho, Y, Sundaram, H, Weinman, C, Paik, M, Dimitriou, M, Finlay, J, Callow, M, Callow, J, Kramer, E, & Ober, C. Triblock Copolymers with Grafted Fluorine-Free Amphiphilic Non-Ionic Side Chains for Antifouling and Fouling-Release Applications. United States. https://doi.org/10.1021/ma200269s
Cho, Y, Sundaram, H, Weinman, C, Paik, M, Dimitriou, M, Finlay, J, Callow, M, Callow, J, Kramer, E, and Ober, C. 2011. "Triblock Copolymers with Grafted Fluorine-Free Amphiphilic Non-Ionic Side Chains for Antifouling and Fouling-Release Applications". United States. https://doi.org/10.1021/ma200269s.
@article{osti_1042001,
title = {Triblock Copolymers with Grafted Fluorine-Free Amphiphilic Non-Ionic Side Chains for Antifouling and Fouling-Release Applications},
author = {Cho, Y and Sundaram, H and Weinman, C and Paik, M and Dimitriou, M and Finlay, J and Callow, M and Callow, J and Kramer, E and Ober, C},
abstractNote = {Fluorine-free, amphiphilic, nonionic surface active block copolymers (SABCs) were synthesized through chemical modification of a polystyrene-block-poly(ethylene-ran-butylene)-block-polyisoprene triblock copolymer precursor with selected amphiphilic nonionic Brij and other surfactants. Amphiphilicity was imparted by a hydrophobic aliphatic group combined with a hydrophilic poly(ethylene glycol) (PEG) group-containing moiety. The surfaces were characterized by dynamic water contact angle, atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and near edge X-ray absorption fine structure (NEXAFS) analysis. In biofouling assays, settlement (attachment) of both spores of the green alga Ulva and cells of the diatom Navicula on SABCs modified with Brij nonionic side chains was significantly reduced relative to a PDMS standard, with a nonionic surfactant combining a PEG group and an aliphatic moiety demonstrating the best performance. Additionally, a fouling-release assay using sporelings (young plants) of Ulva and Navicula suggested that the SABC derived from nonionic Brij side chains also out-performed PDMS as a fouling-release material. Good antifouling and fouling-release properties were not demonstrated for the other two amphiphilic surfaces derived from silicone and aromatic group containing nonionic surfactants included in this study. The results suggest that small differences in chemical surface functionality impart more significant changes with respect to the antifouling settlement and fouling-release performance of materials than overall wettability behavior.},
doi = {10.1021/ma200269s},
url = {https://www.osti.gov/biblio/1042001}, journal = {Macromolecules},
issn = {0024-9297},
number = 12,
volume = 44,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 2011},
month = {Sat Dec 31 00:00:00 EST 2011}
}