Biodegradable polysaccharide hydrophobic coating for ceramic surfaces
This innovative coating utilizes modified chitosan to create a biodegradable, hydrophobic layer for ceramic surfaces, enhancing stain resistance and durability while maintaining aesthetics. It incorporates TiO2 nanoparticles for additional self-cleaning properties.
Overview
Lehigh University has developed a biodegradable and hydrophobic coating for ceramic surfaces, using a modified polysaccharide, chitosan, as its base. This innovation aims to enhance the stain resistance and durability of ceramic surfaces, such as those found in toilets, without compromising their aesthetic appeal. The coating is environmentally friendly, biocompatible, and cost-effective. By chemically modifying chitosan with octadecylamine and glutaraldehyde, the coating achieves increased hydrophobicity, crucial for resisting stains. The addition of TiO2 nanoparticles provides photocatalytic properties, offering self-cleaning capabilities.
Technical specifications
- Chitosan Base: Derived from chitin, providing strong adhesion to oxide surfaces.
- Hydrophobic Modification: Achieved through chemical bonding with octadecylamine and glutaraldehyde.
- TiO2 Nanoparticles: Incorporated for photocatalytic and self-cleaning effects.
- Application Methods: Sprayable coating suitable for ceramic surfaces.
- Key Performance Metrics: Evaluated through mechanical robustness tests and water contact angle measurements to ensure hydrophobicity.
Technology readiness level
The technology is currently at TRL 3, indicating that experimental proof of concept has been demonstrated. Future plans include formulation development, optimization, and testing phases to refine the coating's properties and assess its environmental impact and safety through biodegradability tests in accordance with OECD guidelines.
About Lehigh University
Lehigh University is a private, mid-sized research university in Bethlehem, Pennsylvania focused on interdisciplinary, hands-on problem solving. A multi-campus footprint includes a research campus with co-located labs, instrumentation, and prototyping spaces for rapid iteration with industry. Corporate engagement staff streamline sponsored research, capstones, internships, and short courses, and an on-campus incubator links partners to startup pipelines. Proximity to New York City and Philadelphia enables collaboration with regional manufacturers, logistics leaders, and growth-stage firms. Faculty secure competitive federal funding from agencies such as the NSF and DOE, and a technology transfer office supports IP, licensing, and new venture formation.
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