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Updated: Jul 28, 2025
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Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
Published on: December 24, 2014
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Fouling Resistance of Brush-Modified Elastomers
Travis S Laws1, William K Ledford2, Kayla Kurtz3
1Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States.
ACS Applied Materials & Interfaces
|June 2, 2023
Summary
Environmentally friendly antifouling coatings using bottlebrush-modified elastomers show promise. A copolymer additive with siloxane and fluorinated monomers proved effective against most marine foulants, offering a sustainable alternative to biocides.
Area of Science:
- Materials Science
- Marine Biology
- Surface Chemistry
Background:
- Traditional antifouling coatings rely on biocides, which harm marine ecosystems.
- There is a growing need for eco-friendly coatings that prevent marine fouling through physical interactions.
Purpose of the Study:
- To develop and evaluate environmentally friendly antifouling coatings based on bottlebrush-modified elastomers.
- To investigate the relationship between surface properties and fouling resistance.
Main Methods:
- Synthesis of bottlebrush additives with fouling-resistant side chains.
- Incorporation of additives into commercial elastomers via blending and covalent attachment.
- Surface characterization using time-of-flight secondary ion mass spectrometry (TOF-SIMS) and atomic force microscopy (AFM).
Main Results:
- Fouling performance varied significantly across eight tested materials (hard foulant coverage: 1.4–7.2%; soft foulant coverage: 29.1–64.0%).
- Surface composition, determined by bottlebrush chemistry and loading, was the primary factor influencing fouling, not surface roughness.
- A bottlebrush copolymer with siloxane and fluorinated monomers demonstrated broad-spectrum antifouling efficacy.
Conclusions:
- Bottlebrush-modified elastomers offer a viable platform for developing non-toxic antifouling coatings.
- Surface chemistry is critical for controlling fouling, with specific copolymer formulations showing superior performance.
- Further development could lead to effective, environmentally benign solutions for marine biofouling prevention.
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