SiO2/Ladder-Like Polysilsesquioxanes Nanocomposite Coatings: Playing with the Hybrid Interface for Tuning Thermal Properties and Wettability

Coatings

Sandra Dirè¹  Emanuela Callone¹  Francesco Parrino¹  Roberta Bongiovanni²  Giuseppe Trusiano²  SaraDalle Vacche²  Sara Orsini³  BarbaraDi Credico³  Massimiliano D’Arienzo³  Elkid Cobani³  Carlo Antonini³  Roberto Scotti³ 

[1] Department Industrial Engineering, University of Trento, via Sommarive 9, 38123 Trento, Italy;Department of Applied Science and Technology, DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy;Department of Materials Science, INSTM, University of Milano-Bicocca, Via R. Cozzi 55, 20125 Milano, Italy;

关键词: nanocomposites;    silsesquioxanes;    hybrid materials;    interfaces;    hydrophobic properties;    coating;   

DOI  :  10.3390/coatings10100913

来源: DOAJ

【 摘 要 】

The present study explores the exploitation of ladder-like polysilsesquioxanes (PSQs) bearing reactive functional groups in conjunction with SiO₂ nanoparticles (NPs) to produce UV-curable nanocomposite coatings with increased hydrophobicity and good thermal resistance. In detail, a medium degree regular ladder-like structured poly (methacryloxypropyl) silsesquioxane (LPMASQ) and silica NPs, either naked or functionalized with a methacrylsilane (SiO₂@TMMS), were blended and then irradiated in the form of a film. Material characterization evidenced significant modifications of the structural organization of the LPMASQ backbone and, in particular, a rearrangement of the silsesquioxane chains at the interface upon introduction of the functionalized silica NPs. This leads to remarkable thermal resistance and enhanced hydrophobic features in the final nanocomposite. The results suggest that the adopted strategy, in comparison with mostly difficult and expensive surface modification and structuring protocols, may provide tailored functional properties without modifying the surface roughness or the functionalities of silsesquioxanes, but simply tuning their interactions at the hybrid interface with silica fillers.

【 授权许可】

Unknown