title: Processable high internal phase Pickering emulsions using depletion attraction.
abstract: High internal phase emulsions have been widely used as templates for various porous materials, but special strategies are required to form, in particular, particle-covered ones that have been more difficult to obtain. Here, we report a versatile strategy to produce a stable high internal phase Pickering emulsion by exploiting a depletion interaction between an emulsion droplet and a particle using water-soluble polymers as a depletant. This attractive interaction facilitating the adsorption of particles onto the droplet interface and simultaneously suppressing desorption once adsorbed. This technique can be universally applied to nearly any kind of particle to stabilize an interface with the help of various non- or weakly adsorbing polymers as a depletant, which can be solidified to provide porous materials for many applications.
authors.affiliation: Department of Chemical and Biomolecular engineering and KINC, KAIST, Daejeon 305-701, Korea.
authors.forename: KyuHan
authors.initials: K
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biomolecular engineering and KINC, KAIST, Daejeon 305-701, Korea.
authors.forename: Subeen
authors.initials: S
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering, KAIST, Daejeon 305-701, Korea.
authors.forename: Jiheun
authors.initials: J
authors.lastname: Ryu
authors.affiliation: Department of Chemical and Biomolecular engineering and KINC, KAIST, Daejeon 305-701, Korea.
authors.forename: Jiyoon
authors.initials: J
authors.lastname: Jeon
authors.affiliation: Applied Quantum Composites Research Center, Korea Institute of Science Technology (KIST), Jeonbuk 565-905, Korea.
authors.forename: Se Gyu
authors.initials: SG
authors.lastname: Jang
authors.affiliation: Department of Mechanical Engineering, KAIST, Daejeon 305-701, Korea.
authors.forename: Hyunjun
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Mechanical Engineering, KAIST, Daejeon 305-701, Korea.
authors.forename: Dae-Gab
authors.initials: DG
authors.lastname: Gweon
authors.affiliation: School of Materials Science and Engineering and Optoelectronics Convergence Research Center, Chonnam National University, Gwangju 61186, South Korea.
authors.forename: Won Bin
authors.initials: WB
authors.lastname: Im
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, Jeonju-si, Jeollabuk-do, 561-756, Korea.
authors.forename: Yosep
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, Jeonju-si, Jeollabuk-do, 561-756, Korea.
authors.forename: Hyunjung
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biomolecular engineering and KINC, KAIST, Daejeon 305-701, Korea.
authors.forename: Siyoung Q
authors.initials: SQ
authors.lastname: Choi