Results of an experimental study of formation of capsules of nylon 610 by the reaction of sebacyl chloride with hexamethylene diamine in a two-phase liquid-liquid system are described. The aim of the work was to investigate the control of final capsule diameter by electrostatically charging the droplets of the dispersed phase prior to injection into a continuum of non-conducting organic phase across which a steady high-voltage field was maintained. Particle formation was studied in both the discrete droplet and the electrostatic dispersion regimes and droplet size distribution data are presented and illustrate the relationship between applied field and mean capsule size. A novel column contacting system with segregated continuous-phase flow regimes was developed to promote efficient drop formation prior to polymerisation and to ensure efficient capsule product collection. © 1991.
|Number of pages||7|
|Publication status||Published - Mar 1991|