Hybrid copolymer latex of MMA-BA-zonyl TM-PDMS by mini-emulsion polymerization

Abstract

Stable, coagulum free fluoro-silicone-acrylic latex (FSAL) of methyl methacrylate (MMA)-co-butyl acrylate (BA)-co-Zonyl TM-hyb-Polydimethylsiloxane (PDMS) is prepared through mini-emulsion polymerization. Apart from this, three more latexes/emulsions acrylic latex (AL) of methyl methacrylate (MMA)-co-butyl acrylate (BA), silicone-acrylic latex (SAL) of methyl methacrylate (MMA)-co-butyl acrylate (BA)-hyb- PDMS, and fluoro acrylic latex (FAL) of methyl methacrylate (MMA)-co-butyl acrylate (BA)-co-Zonyl TM are prepared for systematic understanding of the preparation and properties of the emulsions. The emulsions are prepared with almost uniform size of monomer droplets (mini-emulsions). The prepared latexes were characterized by IR, C13 NMR and 1H NMR. A systematic understanding of the effect of initial droplet size on final latex particle, the properties of the latex particles such as swelling ratio, MFFT, contact angle, distribution of particle size, rheological behavior, DSC/DMA thermograms, SEM images of the films and film topography are reported. The fluoro-silicone-acrylic latex (FSAL) exhibit, stable, low MFFT, narrow particle size distribution, and high contact angle for water, and hence it can be a great candidate as a hydrophobic binder in coating products.