Creating superhydrophobic, abrasion-resistant and breathable coatings from water-borne polydimethylsiloxane-polyurethane Co-polymer and fumed silica

Multifunctional composite coatings with hydrophobic, UV-resistant, anti-oxidative, and photothermal performance for healthcare

“…3 , the asymmetric and symmetric stretching vibrations located at 2920 and 2854 cm -1 are attributed to the -CH 3 and -CH 2 groups [31] , [32] , indicating that the silica sol has been grafted on the cotton fabric surface. In addition, the peak at 1261 cm -1 corresponds to the Si-C groups, and the peak at 800 cm -1 is attributed to the Si-O-Si [12] , [33] , demonstrating that the silica sol is anchored onto the cotton fabric. The characteristic peak of the adsorbed water molecules at 1637 cm -1 becomes narrower [34] , revealing the surface hydrophobicity of cotton fabric after treatment.…”

“…However, surface hydrophobicity and superhydrophobicity have the inherent drawback of poor abrasion resistance [9] , [10] , [11] , limiting their overall development in scientific research and practical application [6] . In general, fluorinated materials have been used to obtain excellent surface superhydrophobicity [12] . Unfortunately, fluorinated materials with bioaccumulation potentially threaten the human body and ecosystems [13] .…”

Liquid-Phase Hydrogenation of Phenol in an Advanced Gas–Liquid Concurrent Upflow Fixed-Bed Reactor with Membrane Dispersion

“…In addition, cyclohexanone can also be further hydrogenated to cyclohexanol . The experimental process is as follows: Considering that the required transmembrane pressure will be increased because of the capillary force and the hydrophilic property of the ceramic membrane, , hydrogen first passed through the membrane layer at a constant flow rate and then divided into microbubbles under the shear force from the liquid phase, which were then mixed with the phenol aqueous solution on the tube side to form a gas–liquid concurrent upflow mixture. The resulting gas–liquid mixture flowed into a fixed-bed reactor for hydrogenation.…”

Self-assembly of hierarchical porous structure for stretchable superhydrophobic films by delicately controlling the surface energy

“…For the superhydrophobic coating, SiO 2 , titanium dioxide (TiO 2 ), zinc oxide (ZnO), and other inorganic nanoparticles were always used to increase the roughness of the stretchable substrate. [8][9][10][11][12][13][14][15][16] However, it is obvious that the compatibility between these inorganic nanoparticles and polymer substrates is very poor, leading to low interfacial adhesion. Thus, the superhydrophobic structures are usually fragile, and the superhydrophobic coatings are easily peeled from the stretchable substrate or destroyed by an external force.…”