Tailoring the Surface Properties of Coatings Through Self-Stratification

Abstract

In order to combat biofouling, self-stratified siloxane (PDMS)-polyurethane (PU) coatings have been developed as potential fouling release coatings. To understand the effect of surface damage on the fouling release performance of the coatings, the coatings were abraded using two different Scotch Brite pads with varying roughness, under varying loads. The contact angle and surface energy data showed that the coatings retained their hydrophobicity even after abrasion. The FR performance against microfoulants deteriorated, but the performance of the abraded coatings improved towards barnacles. Based on the results obtained, it was hypothesized that the FR behavior was dependent on the size of the features formed after abrasion, relative to the size of the fouling organism. Analysis of the surface features further supported this hypothesis.

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Document Details

Document Type
Technical Report
Publication Date
Oct 13, 2016
Accession Number
AD1022907

Entities

People

  • Dean C Webster

Organizations

  • North Dakota State University

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Antifouling Coatings
  • Aquatic Organisms
  • Biomedical And Dental Materials
  • Chemical Synthesis
  • Chemistry
  • Fouling Organisms
  • Material Degradation Processes
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Organic Chemistry
  • Polymers
  • Resins
  • Surface Chemistry
  • Surface Energy
  • Surface Properties
  • Surface Tension

Readers

  • Surface Coatings Technology.
  • Systems Analysis and Design