Optimizing Superhydrophobic Coatings: The Role of Catalysts, Additives, and Composition on UV and Thermal Stability of Inverse Vulcanization Polymers

Autor(es)

Diniz, Vinicius ; Rath, Susanne ; Crick, Colin R.

• Tipo de documento: Artigo Científico
• Fonte: ACS APPLIED POLYMER MATERIALS; v. 7, n. 2, p. 6-pg., 2025-01-06.

Resumo

Inverse vulcanization (IV) enables the production of sustainable polymer from sulfur waste, offering hydrophobic, fluorine-free, and superhydrophobic coatings. However, these materials need adhesion improvements for enhanced durability. This study has developed an epoxy-, fluorine-, and metal-free superhydrophobic coating using the spray-coating of carbon nanofibers (CNFs), silica nanoparticles, and IV polymers on glass. An optimized formula of 28% sulfur, 20 mg/mL CNFs, 25 mg/mL silica, and 80 mg/mL polymer-was established. Zn(DTC)2-catalyzed coatings retained superhydrophobicity for 150 tape peeling cycles, up to 250 degrees C, and 6 h of UV-C exposure, demonstrating a straightforward, eco-friendly approach to durable, versatile superhydrophobic coatings. (AU)

• Processo FAPESP: 21/08123-0 - Materiais híbridos avançados para reuso potável direto como alternativas ao carvão ativado para a remoção de contaminantes emergentes
• Beneficiário: Vinicíus Diniz
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 22/11350-1 - Investigação da viabilidade de nanomateriais fotoativos e com propriedades antimicrobianas para purificação de água
• Beneficiário: Vinicíus Diniz
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado