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Preparation of polystyrene latex particles by γ-rays-induced emulsifier-free emulsion polymerization
Institution:1. Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;2. The Chemical Engineering College of Qinghai University, Xining 810016, China;1. Department of Crop and Environment Sciences, Harper Adams University, Edgmond, Newport TF10 8NB, UK;2. Game & Wildlife Conservation Trust, Burgate Manor, Fordingbridge SP6 1EF, UK;1. Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China;2. Peking University Shenzhen SOC Key Laboratory, PKU-HKUST Shenzhen-Hongkong Instituition, Shenzhen 518051, China;3. Department of Materials Science, Fudan University, Shanghai 200433, China;1. Department of Chemistry, The Hong Kong University of Science and Technology, Hong Kong, China;2. Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Abstract:Monodisperse polystyrene latex particles were prepared by 60Co-γ-ray radiation-induced emulsifier-free emulsion polymerization with the use of surfactant monomer at room temperature. The surfactant monomer 10(9)-hydroxyl-9(10)-allyl ether octadecanoic acid (HAEOA) was synthesized and characterized by FT-IR and 1H-NMR spectra. TEM was used to characterize the polystyrene latex particles. HAEOA acted as not only a comonomer but also a stabilizer to copolymerize with styrene and stabilize the polystyrene latex particles. Kinetics analysis shows that there is no constant rate stage which seems to indicate a droplet nucleation mechanism.
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