Hybrid organic–inorganic silicate/thiol–ene photocured coatings

• Published in: Surface & coatings technology Vol. 206; no. 10; pp. 2719 - 2724
• Main Authors: Colucci, G., Mana, S., Conzatti, L., Sangermano, M.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 25.01.2012; Elsevier
• Subjects: Applied sciences; Coatings; Cross-disciplinary physics: materials science; rheology; Dispersing; Exact sciences and technology; Fillers; Hybrid materials; Kaolin; Materials science; Metals. Metallurgy; Nanostructure; Photopolymerization; Physics; Production techniques; Reinforcement; Silicate nanoparticles; Silicates; Surface hardness; Surface treatment; Surface treatments; Thiol–ene coatings; Thiol–ene coatings; Photopolymerization; Hybrid materials; Silicate nanoparticles; Nanoparticles; Thiols; Surface treatments; Thiol-ene coatings; Coatings
• ISSN: 0257-8972; 1879-3347
• DOI: 10.1016/j.surfcoat.2011.12.007

Hybrid organic–inorganic photocured systems based on thiol–ene chemistry were prepared by dispersing different silicates, sepiolite fibers and lamellar kaolin, up to a content of 7wt.% in a thiol–ene system. The addition of the silicate filler in the range of 1–7wt.% did not significantly influence the photocurable process inducing a slight increase on Tg and E′ values. On the other hand, the addition of the silicate filler resulted in an increase on surface hardness with increasing particle content. We can conclude that the presence of silicates leads to an excellent effect of reinforcement of the surface hardness of the thiol–ene nanostructured coatings. ► Hybrid thiol–ene organic–inorganic photocured systems were prepared. ► Effect of silicate fillers in the range of 1–7wt.% was studied. ► Increase in surface hardness with increasing particle content was observed.