A Kinetic Investigation of Removal of Residual Monomers From Polymer Latexes Via Post-polymerization and Nitrogen Stripping Methods

作者：Kechagia Zoi; Kammona Olga; Pladis Prokopis; Alexopoulos Aleck H; Kiparissides Costas^*

来源：Macromolecular Reaction Engineering, 2011, 5(9-10): 479-489.

DOI：10.1002/mren.201100025

• emulsion polymerization
• kinetic investigation of residual monomer removal
• nitrogen stripping
• post-polymerization with redox initiators

In the present study, a comprehensive experimental investigation on the removal of residual monomers and other volatile organic compounds (VOCs) from polymer latexes via post-polymerization and nitrogen stripping is reported. Both techniques are applied to poly(methyl methacrylate) (PMMA), poly(butyl acrylate) (PBuA), and poly(methyl methacrylate/butyl acrylate) P(MMA/BuA) latexes. The effects of various process parameters (e.g., temperature, oxidant and reductant types and concentrations, addition time of the oxidant/reductant redox system for the post-polymerization process and nitrogen flow rate, agitation rate, and temperature for the physical stripping process) and latex properties (e.g., particle size, wt.-% of polymer solids and copolymer composition) on the monomer removal process efficiency are experimentally assessed. Finally, the two methods are applied in a simultaneous or sequential mode, to further improve the VOCs removal efficiency.

• 出版日期2011-10-12