title: Graphene functionalized with poly(vinyl alcohol) as a Pickering stabilizer for suspension polymerization of poly(methyl methacrylate).
abstract: Two types of thermally reduced graphenes (TRGs) having different lateral sizes were non-covalently modified with poly(vinyl alcohol) to endow water-dispersibility. The modified TRGs were examined as Pickering stabilizers for the suspension polymerization of methyl methacrylate (MMA). They were effective graphene-based Pickering stabilizers for the system with almost all of the polymerized composite microparticles having a regular spherical shape. The particle size of the composite microparticles was tunable by the size or the amount of modified TRG used as stabilizer. The almost perfect core-shell structure of the composite microparticles effectively enhanced the thermal stability of the core PMMA. In addition, when the core-shell microparticles were compression molded into a monolith, the obtained composite exhibited an ultra-low percolation threshold of electrical conductivity of around 0.04vol%.
authors.affiliation: Department of Chemistry, Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea.
authors.forename: Gansukh
authors.initials: G
authors.lastname: Erdenedelger
authors.affiliation: Department of Chemistry, Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea. Electronic address: daotrungdung_vn@yahoo.com.
authors.forename: Trung Dung
authors.initials: TD
authors.lastname: Dao
authors.affiliation: Department of Chemistry, Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749, Republic of Korea. Electronic address: hmjeong@mail.ulsan.ac.kr.
authors.forename: Han Mo
authors.initials: HM
authors.lastname: Jeong
keywords: Core-shell; Electrical property; Graphene; Pickering stabilizer; Polymer composite