High molar mass polymers by cationic polymerisation in emulsion and miniemulsion.

Miniemulsion polymerization of acrylated methyl oleate for pressure sensitive adhesives

The focus of this work was to improve the aqueous emulsion polymerization of a highly water-insoluble monomer derived from plant oil, acrylated methyl oleate. Conventional emulsion polymerization requires excessive amounts of surfactant and long reaction time. Miniemulsion polymerization improved the polymerization significantly. Only a fraction of the surfactant and reaction time that was nece...

Hydroxyvalerate) Nanoparticles Prepared by a Miniemulsion/solvent Evaporation Technique. Effect of Phbv Molar Mass and Concentration

Miniemulsification and emulsion/solvent evaporation techniques were combined to produce poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanoparticles. Those nanoparticles were prepared with different PHBV molar masses and PHBV concentrations to verify their effect on the final particle size. Nanoparticles with an average diameter of 133 nm were obtained when a low molar mass (Mw = 44,350 g/...

SMA Resins: a Polymeric Surfactant for Emulsion Polymerisation

By using SMA resins as a polymeric surfactant in an emulsion polymerisation process, alone or in combination with other surfactants, the stability of the dispersion under different kinds of stress (chemical, high shear or freeze/thaw) is significantly improved. The presence of SMA copolymer, adsorbed at the surface of the particles of an acrylic dispersion, enhances the stability of the latex b...

Ravindra UDAGAMA SYNTHESIS OF POLYMER-POLYMER HYBRIDS BY MINIEMULSION POLYMERISATION AND CHARACTERISATION OF HYBRID LATEX

The Structure of Polyfulvenes *

Cationic polymerisation of 6,6-disubstituted pentafulvenes yields highly unsaturated, reactive macromolecules of high mo. lecular weight. The mechanistic pathways leading to the polymers are discussed, and the structure XIV of the polymers has been elucidated by a combination of spectroscopic methods as well as by comparison with model compounds. In contrast to reports in the literature, the ma...