Patent ID: 7135230
Filing Date: 2006-11-14
Classification: C08F,C08L,Y10S,Y10T

Abstract:
1. A functional particle preparing method comprising steps of: treating either one of a hollow particle or a porous particle having a pore on the surface thereof by plasma irradiation under a pressure of 10 graft polymerizing at least one type of monomer onto the surface of the plasma irradiated particle by contacting the at least one type of monomer with the surface of the plasma irradiated particle so as to substantially fill the pore of said particle with grafted polymers of said monomer; soaking said graft polymerized particle in a solution having an inclusion to be inserted into said graft polymerized particle, where the solution having the inclusion is adjusted such that the grafted polymers shrink to form openings that allow said inclusion to pass into said pore or through said pore into a cavity region within said particle; adjusting the solution having the inclusion such that the grafted polymers expand to close said openings and to prevent said inclusion from passing through said pore such that a functional particle having inclusion impregnated therein is obtained; and separating said functional particle from said solution; wherein during said plasma irradiation, plasma intensity and/or degree of vacuum are controlled; and during said contacting the at least one type of monomer with the surface of the plasma irradiated particle, at least one of the requirements for monomer concentration, graft polymerization temperature, and graft polymerization time is adjusted to control graft polymerization yield of said grafted polymers.