Abstract
Compressibility of liquid flame spray-deposited porous TiO2 nanoparticle coating was studied on paperboard samples using a traditional calendering technique in which the paperboard is compressed between a metal and polymer roll. Surface superhydrophobicity is lost due to a smoothening effect when the number of successive calendering cycles is increased. Field emission scanning electron microscope surface and cross‒sectional images support the atomic force microscope roughness analysis that shows a significant compressibility of the deposited TiO2 nanoparticle coating with decrease in the surface roughness and nanoscale porosity under external pressure.PACS61.46.-w; 68.08.Bc; 81.07.-b
Highlights
Nanoparticles exhibit extraordinary electronic, optical, and mechanical properties compared to bulk materials
We have previously shown that surface wettability can be alternated between wetting and non-wetting states for several cycles, and the observed changes in wettability correlate well with the changes in the surface chemistry of the TiO2 nanoparticle-coated surface [13,14]
In summary, we have investigated the compressibility of TiO2 nanoparticle coatings on paperboard
Summary
Nanoparticles exhibit extraordinary electronic, optical, and mechanical properties compared to bulk materials. This is due to two facts: first, nanoparticles have a large surface-to-volume ratio, i.e., a large number of atoms are located on the surface with distinct contribution to the free energy; second, quantum confinement manifests in small scale. Nanosized TiO2 particles have been applied in various industries ranging from sunscreen cosmetics [3] and whitening paint pigments [4] to catalyst supports [5], dye-sensitized solar cells [6], and selfcleaning surfaces via photocatalytic activity [7]. The crystalline structure of TiO2 particles plays a crucial role, for example, in dye-sensitized solar cells, which require anatase phase [11,12]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
