Method for preparing hollow ball and hollow ball with complex structure by template method
A composite structure, hollow sphere technology, applied in the preparation of inorganic, organic hollow spheres and composite structure hollow spheres, metal fields, can solve the problem of polymer can not be assembled and so on
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Embodiment 1
[0139] Example 1 Preparation of hollow spheres of polystyrene-polyacrylic acid / titanium dioxide composite structure and titanium dioxide hollow spheres
[0140] Polystyrene-polyacrylic acid hollow sphere template, the outer layer of the hollow spherical shell is polystyrene, the inner layer is polyacrylic acid, the outer diameter is 500nm, and the thickness of the shell layer is 100nm. Take 0.1g of template particles and disperse them in 1g of tetrabutyl titanate, perform saturated adsorption for 4 hours, settle down the hollow spheres adsorbed with tetrabutyl titanate with a high-speed centrifuge, add 10g of water in ethanol solution (40wt%), and hydrolyze After reacting for 4 hours, a hollow sphere with a composite structure is obtained in which the polystyrene-polyacrylic acid hollow sphere is used as a template and titanium dioxide is grown on the inner layer of the shell. After removing the polystyrene and polyacrylic acid from the hollow sphere of this composite structur...
Embodiment 2
[0142] Example 2 Preparation of polystyrene-polymethacrylic acid / magnetic triiron tetroxide composite structure hollow spheres and triiron tetroxide hollow spheres
[0143] 0.1g of polystyrene-polymethacrylic acid hollow structure emulsion particles, whose outer diameter is 1000nm, and the thickness of the shell is 150nm, is dispersed in 1g of 25wt% ferric chloride and 19wt% ferrous chloride mixed solution, saturated After 4 hours of adsorption, the polymer hollow spheres that have absorbed the solution were centrifuged and settled in a high-speed centrifuge, and then dispersed in 10g of 15wt% ammonia water, and hydrolyzed for 4 hours to obtain polystyrene-polymethacrylic acid hollow spheres as templates. The hollow sphere of composite structure in which ferric oxide grows in the inner layer of the shell. After removing polystyrene and polymethacrylic acid from the hollow sphere of this composite structure with chloroform, a hollow sphere of ferric oxide was obtained. The res...
Embodiment 3
[0144] Example 3 Preparation of hollow spheres of polymethyl methacrylate-polyacrylic acid / calcium carbonate composite structure and hollow spheres of calcium carbonate
[0145] 0.1g of polymethyl methacrylate-polyacrylic acid hollow structure emulsion particle, its external diameter is 100nm, and the thickness of shell is 20nm, is dispersed in the calcium chloride solution of 15wt%, saturated adsorption 4 hours, will adsorb chlorine The hollow ball of calcium chloride solution is centrifuged and settled in a high-speed centrifuge, dispersed in 10g of 15wt% sodium carbonate aqueous solution, adjusted to pH 9 with 25wt% ammonia, and reacted for 4 hours to obtain polymethyl methacrylate-polyacrylic acid The hollow ball is a hollow ball of a composite structure in which template calcium carbonate grows on the inner layer of the shell. After removing the polymethyl methacrylate and polyacrylic acid from the hollow sphere of this composite structure with chloroform, the hollow sphe...
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