Nanostructured Lubricated Silver Flake/Polymer Composites Exhibiting Robust Superhydrophobicity

Bayer, Ilker S.; Martiradonna, Luigi; Athanassiou, Athanassia

doi:10.1002/9781118795620.ch12

Cited by 1 publication

(2 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results suggest that the inclusion of Ag microparticles (which are themselves hydrophobic) in the different polymer blends leads to decreased hydrophilicity in samples with higher content of HEMA in their polymer matrix when compared with those without Ag. Similar increases in hydrophobicity upon the addition of silver flakes were reported by Bayer et al [67], who proposed to blend silver flakes into poly(vinyl chlorideco-vinyl acetate-co-vinyl alcohol) coatings in order to make them superhydrophobic. Their results showed that the addition of silver flakes in 50 wt% to the polymer matrix led to an increase in the contact angle from 75°to 164°±4° [67].…”

Section: Equilibrium Water Contentsupporting

confidence: 77%

“…Similar increases in hydrophobicity upon the addition of silver flakes were reported by Bayer et al [67], who proposed to blend silver flakes into poly(vinyl chlorideco-vinyl acetate-co-vinyl alcohol) coatings in order to make them superhydrophobic. Their results showed that the addition of silver flakes in 50 wt% to the polymer matrix led to an increase in the contact angle from 75°to 164°±4° [67]. Contact angle data for our polymer blends and CPCs are shown in the supplementary information (table S1).…”

Section: Equilibrium Water Contentsupporting

confidence: 77%

See 1 more Smart Citation

Low-resistance silver microparticle-HEMA-PEGDA composites for humidity sensing

Lopera-Valle

Elias

2018

Smart Mater. Struct.

View full text Add to dashboard Cite

We present a printable smart material that undergoes a large and reversible change in resistance in response to changes in relative humidity (RH). This material is a conductive polymer composite (CPC), comprised of commercial silver (Ag) microparticles that provides high conductivity to the films, and of a hygroscopic polymer matrix (polyhydroxyethylmethacrylate-co-polyethylene(glycol)diacrylate (HEMA-co-PEGDA)) that responds to humidity by undergoing an increase in volume (through swelling). We characterized the electrical resistivity and swelling behavior of the CPCs, formed sensors comprised of either thin films or patterned lines, and investigated how RH affects the electrical resistivity of the composite films for different compositions and geometries. To characterize the material responsive behavior, a data acquisition system was used to measure changes in resistance while the RH was controlled in a humidity chamber. When the humidity was increased from 25% to 95% RH, the resistance of the films increased up to 650%. Composites with a higher fraction of HEMA in the matrix were found to have both lower recovery times and less hysteresis than composites in which the matrix was pure PEGDA. Such materials can form the basis of inexpensive, printable humidity sensors.

show abstract

Section: Equilibrium Water Contentsupporting

confidence: 77%

Section: Equilibrium Water Contentsupporting

confidence: 77%