The Fabrication And Properties Of The Polymer/Inorganic Particles Composite Arrays

The ordered porous materials have been noticed and researched,because of its wide application in biological,chemical,medical,optoelectronics and other fields.In addition,asymmetric particles are rarely prepared by a method self-assembly.Most self-assembly formed colloidal particles are spherical particles.Asymmetric particles are difficult to self-assembly form complex and special structures,so asymmetric particles ordered arrays are more difficult to form.In this paper,we introduce different inorganic precursors to the polymer solution to prepare polymer/inorganic nanoparticle composite films with hexagonally porous array.Additionally,the preparation of polymer/hybrid inorganic nanoparticles was carried out by mixing two kinds of inorganic precursors to study the mechanism.The detail content is as followed:(1)A pattern of non-close packed silica(SiO2)microparticles with bead in pore structure was prepared by a one-step self-assembly process which combines the in situ formation of the ordered template and the sol-gel reaction from a homogeneous solution of SiCl4/PS/CHCl3 by adding the precursor SiCl4 to the solution of PS/CHCl3.The SiO2 particles take an asymmetrical "ball-on-disk" morphology with one particle in one hole in the pores of honeycomb-like polystyrene(PS)matrix.And the size of SiO2 particles depends on the concentration of the precursor(SiCl4)in the solution.(2)This patterned bead in pore structure with identical hydrophilic-hydrophobic pattern can be directly used as a microreactor providing nucleate site for the preparation of anisotropic complex structure,such as asymmetrical SiO2 and cubic NaCl crystal particles,by simply dipping the film in the precursor solution.The in situ formed NaCl crystals take a rectangle shape and adjacent to SiO2 particles.Since the limitation of the volume of pores and the size of SiO2 particles decided the NaCl crystal size generated after the evaporation of water,in brief,the crystal size would be able to be controlled by tuning the pore and particle size.(3)A pattern of non-close packed SnO2 microparticles with bead in pore structure was prepared by a one-step self-assembly process which combines the in situ formation of the ordered template and the sol-gel reaction from a homogeneous solution of SnCl4/PS/CHCl3 by adding the precursor SnCl4 to the solution of PS/CHCl3.The SnO2 particles take an asymmetrical hemispherical morphology with one particle in one hole in the pores of honeycomb-like polystyrene(PS)matrix.And the morphology of SnO2 particles depends on the concentration of the precursor(SnCl4)in the solution transforming from half-bowl-like to hemispherical,finally bowl-like.(4)A pattern of non-close packed the hybrid particles of SnO2 and SiO2 with bead in pore structure was prepared by a one-step self-assembly process which combines the in situ formation of the ordered template and the sol-gel reaction from a homogeneous solution of SnCl4/SiCl4/PS/CHCl3 by adding the precursor SnCl4 and SiCl4 to the solution of PS/CHCl3.The composite film shows different hydrolysis product morphology depend on the proportion of the different precursors.Namely,the particles of some areas are spherical and some areas show hemispherical particles.The same situation also occurs on SiCl4 and TiCl4.But the TiCl4 and SnCl4 hydrolysis particles are hemispherical.Thus we can obtain hybrid particles with different component and different morphology.