Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site




Coatings Industry News

Main News Page

UK Team Develops ‘Green’ Hydrophobic Coating

Friday, June 16, 2017

Comment | More

Scientists at a U.K. university say they’ve developed a “green” alternative to current hydrophobic and hydrophilic materials used in antifouling and waterproofing applications.

The team, working out of the Energy Safety Research Institute at Swansea University in Wales, says it’s developed a spray-coated nanomaterial that provides texture to a substrate and can be tailored to provide superhydrophobicity or superhydrophilicity. Superhydrophobic materials are used to repel water and create “self-cleaning” surfaces in some applications; superhydrophilic materials have been proposed for antifogging and antifouling in some cases.

Shirin Alexander/University of Swansea

The Swansea team says it’s developed a spray-coated nanomaterial that provides texture to a substrate and can be tailored to provide superhydrophobicity or superhydrophilicity.

The basis of the Swansea approach is aluminum oxide nanoparticles. The researchers, led by faculty members Shirin Alexander and Andrew Barron, explored methods of manipulating, or “tuning,” the surface properties of the nanoparticles using hydrocarbons—different types of carboxylic acids.

Different Acids, Different Properties

The research team found that by modifying the nanoparticles with carboxylic acids of various chain lengths and surface energies, they could tune the particles’ hydrophobicity and create coatings that exhibited properties anywhere from superhydrophobic to superhydrophilic.

The scientists say in both cases, the nanocoating exhibited roughness, which can enforce both superhydrophobicity and superhydrophilicity. But nanoparticles with the methoxy functionality exhibit high surface energy, making the coating superhydrophilic, where nanoparticles modified with branched hydrocarbon chains have lower surface energy, and repel water with their branched, spiky chains.

The team sees the hydrocarbon-modified nanoparticles as a potential replacement for fluorocarbons used for superhydrophobicity; the hydrocarbon materials could be less expensive and friendlier to the environment, they say.

In addition to Alexander and Barron, research was conducted by graduate student Wafaa Al-Shatty and research fellow Alex Lord.

The full paper can be read in the open-source ACS Omega journal online.


Tagged categories: Colleges and Universities; hydrophobic coatings; Nano and hybrid coatings; Nanotechnology; Research; Research and development

Comment Join the Conversation:

Sign in to our community to add your comments.

Sherwin-Williams General Polymers Resinous Flooring App
Our coatings and linings expertise available 24/7, allowing you to explore the Sherwin-Williams systems best suited for your flooring needs. Android Users Click here to Download the app today!

New resins from BASF will have metals loving water!
Excellent corrosion resistance, low VOC, high gloss, thin films 800-231-7868

PPG Protective and Marine Coatings Group
We Protect and Beautify the World
PPG is widely recognized as a world leader in protective and marine coatings, developing innovative, cutting-edge products and services.

SEMicro Division, M.E. Taylor Engineering, Inc.
Coatings Adhesion Testers
The PATTI® accurately measures the bond strength between coating & substrate. Outfitted properly, the surface can be rough, porous, or curved & >10K psi strong!

Waterjet Technology Association (WJTA)
Click to register today!
See the latest automated and handheld UHP waterblasting tools/systems/products. Exhibits, live demos, educational sessions, waterjet short course, networking.

Tarps manufacturing, Inc.
QUALITY MADE IN AMERICA —Available near you!
CLICK to get a behind-the-scenes look at how Tarps Manufacturing makes the highest-quality tarps right here in the USA — available nationwide.

Jotun Paints Inc.
Jotun Jotachar 1709
Mesh-free passive fire protection epoxy designed to protect against hydrocarbon pool fire scenarios for up to four hours as defined in the ANSI/UL1709 standard.

Mitsubishi Gas Chemical America
Performance Amine 1,3-BAC
A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.

W Abrasives
Unrivaled Expertise for your Surface Preparation
As the global leader in steel abrasives, W Abrasives material is the efficient and eco-friendly solution blasting with you to reach the perfect profile.

Carboline Company
Carboline is pouring with opportunities
We are proud of our exceptional products and services, and believe that people are our greatest asset. Come grow with us!


Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL

The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us