Pickering emulsion-fabricated polystyrene–graphene oxide microspheres and their electrorheology

A facile assembly of polyimide/graphene core–shell structured nanocomposites with both high electrical and thermal conductivities

“…GO exhibited amphiphilic feature and could form stable aqueous colloids in water due to the various hydrophilic functional groups such as hydroxyl, carbonyl and carboxylic groups [44,[63][64][65]. Thus, GO can be easily coated on the surface of PI microspheres due to the formation of hydrogen bonding between the hydrophilic functional groups of GO and the carbonyl groups of PI strongly enhanced the intermolecular interaction between PI microspheres and GO.…”

“…However, as far as we know, there was no research concerned on the PI/GP microspheres or their application in electrical conductive composites, although other polymer/graphene microspheres have been studied in highly electrical or thermal conductive composites, super capacitor, etc. [41][42][43][44][45][46]. In these reports, there were three methods to fabricate polymer/graphene core-shell structured microspheres:…”

Pickering emulsion polymerized poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/polystyrene composite particles and their electric stimuli-response

“…Only a few studies 70 have reported Pickering polymerization in which a conducting polymer was used as a stabilizer. 21 Recently, Kim et al 32 reported the fabrication of core-shell-structured polystyrene (PS)/graphene oxide (GO) microspheres as ER materials by Pickering emulsion polymerization using GO as a stabilizer. The PS core was successfully wrapped with GO and the PS/GO-based ER fluid presented a typical ER response under applied electric fields, corresponding with the Cho-Choi-Jhon (CCJ) model of rheological equation of state.…”

Celebrating Soft Matter's 10th Anniversary: Stimuli-responsive Pickering emulsion polymerized smart fluids

“…of adsorption depends on the contact angle, θ ow , established at the position of the particles with an o/w interface. 9 In particular, if the particles are hydrophilic, their θ ow is lower than 90° when measured in an aqueous phase, and the particles 40 preferentially stabilize oil-in-water (o/w) emulsions. In contrast, for the hydrophobic particles (θ ow > 90°), the particles tend to stabilize water in-oil (w/o) emulsions.…”

“…11,12 Recently, there has been an interesting attempt in the use of solid particles as surfactants to stabilize various emulsions to fabricate particles with different morphology. 13 35 This Highlight reviews the outstanding rheological performance of Pickering emulsion-polymerized, core-shell structured particles for either ER or MR fluids, which include Pickering-type systems prepared by emulsion polymerization not only graphene oxide (GO), clay, and SiO 2 stabilizers for ER 40 fluids but also Fe 2 O 3 and Fe 3 O 4 stabilizers for MR fluids, with its advantage such that the Pickering emulsion polymerization is an eco-friendly method to fabricate core-shell structured smart composite materials with functional solid particles at the interface.…”