Weihua Ming

TL;DR: A robust procedure for preparing superhydrophobic hybrid films on which the advancing contact angle for water is about 165 degrees and the roll-off angle of a 10-muL water droplet is 3 +/- 1 degrees is reported.

TL;DR: When a perfluoroalkyl chain is introduced to the silica particle surface, the superhydrophobic textile also becomes highly oleophobic, as demonstrated by a static contact angle of 140 degrees and a roll-off angle of 24 degrees for a 15 microL sunflower oil droplet.

TL;DR: It proved to be essential to add the nanoparticle layer in achieving superoleophobicity, especially in terms of low roll-off angles for hexadecane, and was successfully obtained by incorporating perfluoroalkyl groups onto the surface of the modified cotton.

Abstract: We present the first surfactant-free inverse emulsion polymerization by using organically modified clay platelets as stabilizers. Colloidally stable inverse Pickering emulsions of aqueous acrylamide (AAm) or 2-hydroxyethyl methacrylate (HEMA) in cyclohexane stabilized by hydrophobic Cloisite 20A (MMT20) were prepared. With both oil-soluble 2,2'-azobis(isobutyronitrile) (AIBN) and water-soluble 2,2'-azobis[2-methyl-N-(2-hydroxyethyl)propionamide] (VA-086) as initiators, inverse latexes in the size range of 700-980 nm were successfully obtained. It has been revealed by SEM and cryo-TEM that the latexes were stabilized by hydrophobic clays, as exemplified by the rugged surface of the particles. It was shown from thermogravimetric analysis (TGA) that all the clay platelets were incorporated into the composite particles, and in partially exfoliated state as indicated by X-ray diffraction study.

TL;DR: In this paper, the kinetics of CuBr-mediated homogeneous atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) using 2-hydroxyethyl-2-bromoisobutyrate (HEBIB) as initiator and N-(n-hexyl)pyridy pyridy was described.