| 초록 |
In recent literature, several processes have been described to modify of particles that consist of a polymer and inorganic core surrounded by a polymer and inorganic fine particle. The technique of polymer surface modification are becoming more and more popular since polymer encapsulated particles offer very potential applications. The modification of particle surfaces is a method for the preparation of highly functional materials. The importance of the polymer and inorganic particle surface modification method is recognized from the point of view of being capable of improving and controlling the properties of polymer particles, for example, electrical properties, optical properties, etc. This concept of encapsulation on polymer surfaces can be involved in the production of cosmetics, pharmaceuticals, foods, paints, pigments, inks, to improve the compatibility between the filler and binder.Polymer encapsulation on PE, PMMA and PU particles, using dry impact blending process is described. The behavior of encapsulation of PE, PMMA and PU, study has been carried out using core-shell type rubber particles, made up of poly(n-butyl acrylate) (PBA) core and a poly(methyl metharcylate) (PMMA) outer shell. Spherical PMMA and PBA/PMMA core-shell particles 0.1 and 0.5㎛ diameter, and spherical PE and PMMA, PU 10㎛ in diameter were used as coating and core materials respectively. In the dry impact blending of a binary powder mixture which contains elasticity of rubber particle and the action of impulsive forces during the operation were important factors in the effective preparation of the fine particle coated powder. In this paper, we describe the important factors for an effective fine particles coated powder were discussed using scanning electron microscopy (SEM) for the adhesion between particles. |
