Enhanced Stability of Low Fouling Zwitterionic Polymer Brushes in Seawater with Diblock Architecture

Robert Quintana , Maria Gosa , Dominik Jańczewski , Edit Kutnyanszky , G. Julius Vancso

Abstract

The successful implementation of zwitterionic polymeric brushes as antifouling materials for marine applications is conditioned by the stability of the polymer chain and the brush-anchoring segment in seawater. Here we demonstrate that robust, antifouling, hydrophilic polysulfobetaine-based brushes with diblock architecture can be fabricated by atom-transfer radical polymerization (ATRP) using initiator-modified surfaces. Sequential living-type polymerization of hydrophobic styrene or methyl methacrylate and commercially available hydrophilic sulfobetaine methacrylamide (SBMAm) monomer is employed. Stability enhancement is accomplished by protecting the siloxane anchoring bond of brushes on the substrate, grafted from silicon oxide surfaces. The degradation of unprotected PSBMAm brushes is clearly evident after a 3 month immersion challenge in sterilized artificial seawater. Ellipsometry and atomic force microscopy (AFM) measurements are used to follow changes in coating thickness and surface morphology. Comparative stability results indicate that surface-tethered poly(methyl methacrylate) and polystyrene hydrophobic blocks substantially improve the stability of zwitterionic brushes in an artificial marine environment. In addition, differences between the hydration of zwitterionic brushes in fresh and salt water are discussed to provide a better understanding of hydration and degradation processes with the benefit of improved design of polyzwitterionic coatings.
Author Robert Quintana - [A-Star, Institute of Materials Research and Engineering]
Robert Quintana,,
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, Maria Gosa - [A-Star, Institute of Materials Research and Engineering]
Maria Gosa,,
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, Dominik Jańczewski (FC / LTP) - [Institute of Materials Research and Engineering]
Dominik Jańczewski,,
- Laboratory Of Technological Processes
- Institute of Materials Research and Engineering
, Edit Kutnyanszky - [MESA Institute for Nanotechnology]
Edit Kutnyanszky,,
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, G. Julius Vancso - [A-Star, Institute of Chemical and Engineering Sciences]
G. Julius Vancso,,
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Journal seriesLangmuir, ISSN 0743-7463
Issue year2013
Vol29
No34
Pages10859-10867
Publication size in sheets0.5
Keywords in English antifouling, zwiterionic brushes, diblock co-polymers, surfaces initiated polymerization
ASJC Classification1603 Electrochemistry; 1607 Spectroscopy; 3110 Surfaces and Interfaces; 3104 Condensed Matter Physics; 2500 General Materials Science
DOIDOI:10.1021/la402287a
URL http://pubs.acs.org/doi/abs/10.1021/la402287a
Languageen angielski
File
la402287a.pdf 1.45 MB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 31-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 31-01-2020, ArticleFromJournal
Publication indicators Scopus Citations = 69; WoS Citations = 54; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 1.391; WoS Impact Factor: 2013 = 4.384 (2) - 2013=4.489 (5)
Citation count*11 (2015-04-21)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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