Preparation method of amino acid modified microspheres and product thereof
A technology of amino acids and amino acids, applied in the field of preparation of amino acid modified microspheres, can solve the problems of difficult catalyst recovery, harsh reaction conditions, expensive catalysts, etc., and achieve the effects of easy industrial application, mild preparation process conditions, and easily available sources.
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[0021] Example 1
[0022] An amino acid modified microspheres are prepared as follows:
[0023] (1) Put 0.07 g of Span-60 and 0.03 g of Tween-20 in a three-necked flask, add 12 ml of n-heptane, set the stirring rate to 325 revolutions / min, and disperse evenly;
[0024] (2) Gradually add 0.07 g of methacrylamide, 0.15 g of amino acid ligand, 0.4 g of N, N'-methylenebisacrylamide, and 1.76 g of formamide and stir until a transparent solution;
[0025] (3) Add 0.07 g of azobisisobutyronitrile to the solution of step (2) to dissolve it, and then use a vacuum pump while blowing in nitrogen to remove the air in the system, so that the reaction process is under nitrogen protection;
[0026] (4) Raise the reaction temperature to 70 degrees, the stirring rate is 300-400 rpm, after stirring for 4 hours, filter to obtain white particles, fully washed with ethanol, dried in a 70 degree oven to obtain amino acid modified micro ball.
[0027] After microscopic examination, the particle size was 0.30 ...
Example Embodiment
[0030] Example 2
[0031] An amino acid modified microspheres are prepared as follows:
[0032] (1) Put 0.07 g of Span-60 and 0.03 g of Tween-20 in a three-necked flask, add 12 ml of n-heptane, set the stirring rate to 325 revolutions / min, and disperse evenly;
[0033] (2) Gradually add 0.07 g of methacrylamide, 0.20 g of amino acid ligand, 0.4 g of N,N’-methylenebisacrylamide, and 1.76 g of formamide and stir until a transparent solution;
[0034] (3) Add 0.07 g of azobisisobutyronitrile to the solution of step (2) to dissolve it, and then use a vacuum pump while blowing in nitrogen to remove the air in the system, so that the reaction process is under nitrogen protection;
[0035] (4) Raise the reaction temperature to 70°C, stir for 4 hours, filter to obtain white particles, wash thoroughly with ethanol, and dry in a 70°C oven to obtain amino acid modified microspheres.
[0036] The particle size is about 0.27 mm by microscope inspection, and it is immersed in ethanol solution for 12 h...
Example Embodiment
[0038] Example 3
[0039] An amino acid modified microspheres are prepared as follows:
[0040] (1) Put 0.07 g of Span-60 and 0.03 g of Tween-20 in a three-necked flask, add 12 ml of n-heptane, set the stirring rate to 325 revolutions / min, and disperse evenly;
[0041] (2) Gradually add 0.07 g of methacrylamide, 0.10 g of amino acid ligand, 0.4 g of N,N’-methylenebisacrylamide, and 1.76 g of formamide and stir until a transparent solution;
[0042] (3) Add 0.07 g of azobisisobutyronitrile to the solution of step (2) to dissolve it, and then use a vacuum pump while blowing in nitrogen to remove the air in the system, so that the reaction process is under nitrogen protection;
[0043] (4) Raise the reaction temperature to 70°C, stir for 4 hours, filter to obtain white particles, wash thoroughly with ethanol, and dry in a 70°C oven to obtain amino acid modified microspheres.
[0044] The particle size is about 0.29 mm by microscope inspection. After being soaked in ethanol solution for 12 h...
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