Copolymerization of 2-hydroxyethyl methacrylate with a comonomer with spiroacetal moiety
2011
The study reports the synthesis of a copolymer based on 2-hydroxyethyl methacrylate and 3,9-divinyl-2,4,8,10-tetraoxaspiro[5.5]undecane (U) acquired through radical polymerization in the presence of 2,2′-azobis(2-methylpropionitrile). The attempt was to have a solid content as high as 10 wt %. The polymerization process was conducted in the presence of a classic ionic surfactant--sodium lauryl sulfate--and comparatively using two variants of protective colloid β-cyclodextrin and poly(aspartic acid), respectively. The prepared dispersions were characterized from the viewpoint of their hydrodynamic radius, zeta potential, and conductivity evolution during syntheses. The mean particle size and size distribution and zeta potential and conductivity were also evaluated for the synthesized polymeric particles. The compositions of the polymers were confirmed by FTIR and ¹H NMR spectra, and also, the thermal stability of the polymeric compounds was evaluated. SEM and AFM investigations of the polymer morphology are also presented.
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