An objective of the invention is to provide a method for producing a
polymer-particle composite by which a polymer-particle composite having a
desired particle density and a desired film thickness can be produced
conveniently without allowing the particle to be aggregated in the
polymeric matrix. To accomplish the objective described above, the present
invention provides a method for producing a polymer-particle composite
comprising a step of forming a polymer-containing layer mainly consisting
of a polymeric material and a step of bringing a particle suspension
containing the particle suspended in a solvent capable of swelling the
polymeric material into contact with the polymer-containing layer.
