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.

D'Arienzo, M., Dir(`(e)), S., Cobani, E., Orsini, S., DI CREDICO, B., Antonini, C., et al. (2020). SiO2/ladder-like polysilsesquioxanes nanocomposite coatings: Playing with the hybrid interface for tuning thermal properties and wettability. COATINGS, 10(10) [10.3390/coatings10100913].

SiO2/ladder-like polysilsesquioxanes nanocomposite coatings: Playing with the hybrid interface for tuning thermal properties and wettability

Massimiliano D'Arienzo
;
Elkid Cobani;Sara Orsini;Barbara Di Credico;Carlo Antonini;Roberto Scotti
2020

Abstract

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.
Articolo in rivista - Articolo scientifico
Coating; Hybrid materials; Hydrophobic properties; Interfaces; Nanocomposites; Silsesquioxanes
English
23-set-2020
2020
10
10
913
none
D'Arienzo, M., Dir(`(e)), S., Cobani, E., Orsini, S., DI CREDICO, B., Antonini, C., et al. (2020). SiO2/ladder-like polysilsesquioxanes nanocomposite coatings: Playing with the hybrid interface for tuning thermal properties and wettability. COATINGS, 10(10) [10.3390/coatings10100913].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/287811
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