Method for preparing micron-scale mono-dispersed polystyrene spheres through micro-fluidic
A technology of polystyrene spheres and polystyrene toluene is applied in the field of micro-fluidic control to prepare monodisperse micron-level polystyrene spheres, which can solve the problems of loss and small application area, and achieve large size, good monodispersity, Achieving multifunctional effects
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Embodiment 1
[0030] refer to figure 2 The preparation flow chart of the preparation process, add 25g of sodium lauryl sulfate and 10g of polyvinylpyrrolidone into 500ml of deionized water and dissolve them uniformly, which is recorded as continuous phase P1; add 0.4g of polystyrene particles into 25ml of toluene Uniformly dissolved, recorded as dispersed phase P2;
[0031] Adjust the pressure of the continuous phase to 150 mbar, and the pressure of the dispersed phase to 100 mbar to prepare 20 μm uniform polystyrene toluene droplets with magnetic stirring to collect the droplets while stirring at a speed of 100 rpm. After the collection was completed, stirring was continued at room temperature for 1 day at a rotational speed of 100 rpm to completely volatilize the toluene in the solution, and the obtained solution was centrifuged to obtain micron-sized monodisperse polystyrene spheres at a centrifugation speed of 600 rpm for 5 minutes. Schematic diagram of monodisperse polystyrene sphere...
Embodiment 2
[0033] refer to figure 2 The preparation flow chart of the preparation process, add 25g of sodium lauryl sulfate and 10g of polyvinylpyrrolidone into 500ml of deionized water and dissolve them uniformly, which is recorded as continuous phase P1; add 0.4g of polystyrene particles into 25ml of toluene Uniformly dissolved, recorded as dispersed phase P2;
[0034] Adjust the pressure of the continuous phase to 140 mbar, and the pressure of the dispersed phase to 110 mbar to prepare uniform polystyrene toluene droplets of 30 μm with magnetic stirring to collect the droplets while stirring at a speed of 100 rpm. After the collection was completed, stirring was continued at room temperature for 1 day at a rotational speed of 100 rpm to completely volatilize the toluene in the solution, and the obtained solution was centrifuged to obtain micron-sized monodisperse polystyrene spheres at a centrifugation speed of 500 rpm for 5 minutes. Schematic diagram of monodisperse polystyrene sph...
Embodiment 3
[0036] refer to figure 2 The preparation flow chart of the preparation process, add 25g of sodium lauryl sulfate and 10g of polyvinylpyrrolidone into 500ml of deionized water and dissolve them uniformly, which is recorded as continuous phase P1; add 0.4g of polystyrene particles into 25ml of toluene Uniformly dissolved, recorded as dispersed phase P2;
[0037] Adjust the pressure of the continuous phase to 130 mbar, and the pressure of the dispersed phase to 117 mbar to prepare uniform polystyrene toluene droplets of 50 μm with magnetic stirring to collect the droplets while stirring at a speed of 100 rpm. After the collection was completed, stirring was continued at room temperature for 1 day at a rotational speed of 100 rpm to completely volatilize the toluene in the solution, and the obtained solution was centrifuged to obtain micron-sized monodisperse polystyrene spheres at a centrifugation speed of 350 rpm for 5 minutes. Schematic diagram of monodisperse polystyrene sph...
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