Polymerization in Magnetic Field. XX. Thermal Behavior of the Copolymers of Styrene with 2, 3 Epoxypropyl Methacrylate Synthesized in the Magnetic Field Presence

ABSTRACT

The thermal behavior of polystyrene (PS) and of styrene copolymers with 2, 3 epoxypropyl methacrylate (GMA) synthesized in the presence of the magnetic field has been studied. The thermal behavior was investigated by thermogravimetry (TGA) and differential scanning calorimetry (DSC) techniques. The synthesized polymeric latexes were also characterized from the view point of the particle size distribution (70-200 nm) as well as of their stability by determining the zeta potential values. The decrease of zeta potential absolute value with the increase of GMA content or growth of the temperature it was observed. At the same time, the increase of zeta potential absolute value corresponds to latexes prepared in the MF presence. The presence of the magnetic field during syntheses increases the swelling capacities, glass transition temperature and thermal stability of both homopolymers as well as of the synthesized copolymers. The behavior was attributed to a potential ordered structure induced by the magnetic field during syntheses upon macromolecular chains.