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Nanotechnology

Enhanced Cleaning Capability of Hybrid Waterborne Polyurethane Coatings

Strategic Insights

— 1 min read

Researchers at Zhejiang Science Technical University have successfully developed a new material with enhanced cleaning capability for waterborne polyurethane (WPU) coatings. According to the study, the team used controlled-aggregation of treated graphene carbon nitride (g-C3N4) nanosheets to improve the photodegradation-induced cleaning capability of the coatings. The research has significant implications for various applications, including furniture and automotive coatings.

Key Takeaways:

  • The team achieved a 27% increase in degradation rates for the hybrid WPU coating containing aggregated AL g-C3N4 nanosheets compared to the original g-C3N4 nanosheets.
  • The degradation rates for the hybrid WPU coating containing aggregated AC g-C3N4 nanosheets increased by 15% compared to the original g-C3N4 nanosheets.
  • The hybrid WPU coatings containing aggregated AL g-C3N4 or AC g-C3N4 nanosheets show better degradation capability than common household stains, such as red wine.
  • The research was funded by the Key Research Program of Zhejiang Province and the German Research Foundation (DFG).
  • The team's findings suggest that the controlled-aggregation of treated g-C3N4 nanosheets can significantly improve the cleaning capability of WPU coatings.

Statistics:

  • 96.6 degrees: the contact angle of the original g-C3N4 nanosheets
  • 85.8 degrees: the contact angle of the AL g-C3N4 nanosheets
  • 82.7 degrees: the contact angle of the AC g-C3N4 nanosheets
  • 27%: the increase in degradation rates for the hybrid WPU coating containing aggregated AL g-C3N4 nanosheets
  • 15%: the increase in degradation rates for the hybrid WPU coating containing aggregated AC g-C3N4 nanosheets

Sources:

  • Surfaces and Interfaces, 2025;73
  • Surfaces and Interfaces can be contacted at: Elsevier, Radarweg 29, 1043 Nx Amsterdam, Netherlands
  • Qi Zhong, Zhejiang Science Technical University, Natl Base Int Sci & Technol Cooperat Text & Consum, Hangzhou 310018, People's Republic of China
  • Jing Xu, Yong Chen, Qian Chen, Shaofeng Zhou and Peter Muller-Buschbaum, authors of the research
  • Key Research Program of Zhejiang Province
  • German Research Foundation (DFG)

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