Aqueous emulsion polymerizations of methacrylates and styrene via reversible complexation mediated polymerization (RCMP)

• Main Authors: Mao, Weijia, Sarkar, Jit, Peng, Bo, Goto, Atsushi
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Chemistry::Organic chemistry::Polymers; Polymer; Emulsification
• Online Access: https://hdl.handle.net/10356/153599
• Institution: Nanyang Technological University

Reversible complexation mediated polymerization (RCMP) was successfully exploited in aqueous emulsion polymerization of methyl methacrylate (MMA). The polymerization behavior was comprehensively studied using a series of emulsifiers, alkyl iodide initiating dormant species, and catalysts. The optimized combination of these species generated stable polymer particles up to relatively high solid contents (up to nearly 50%) and achieved nearly quantitative initiation efficiency and low dispersity (Đ = 1.1–1.3). The kinetic and mechanistic aspects of the polymerization were elucidated by the partitioning tests of the species in the aqueous and organic phases and the particle number analysis in the course of polymerization. The emulsion RCMP was amenable to not only MMA but also functional methacrylates and styrene. No use of transition metal or sulfur compounds, relatively high solid contents, good monomer versatility, and high chain-end fidelity achievable in the emulsion RCMP are attractive features for polymer material applications and industrial applications.