Synthesis method of shell starch microsphere
A technology of starch microspheres and synthesis methods, applied in the field of synthesis of starch microspheres, can solve the problems of high cost, inability to be fully applied in other fields, long synthesis time, etc., and achieve the effect of fast deposition speed
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Embodiment 1
[0006] Example 1: First, 0.4 parts of titanium dioxide, 0.004 parts of sodium silicate and 33 parts of deionized water were fully microwave-dispersed in parts by mass to obtain TiO 2 gel; secondly, get 4.5 parts of soluble starch and deionized water into a starch solution at a mass ratio of 1:8; then, 120 parts of cyclohexane, 1.2 parts of initiator, 2.8 parts of Stir the emulsifier to mix well, then add 10% volume of TiO to the mixture drop by drop 2 After gelling, add 1.2 parts of cross-linking agent N, N'-methylenebisacrylamide and starch solution, and react for 4 hours at 50°C with a stirring speed of 600r / min; the initiator is K 2 S 2 o 8 with NaHSO 3 mixture, where K 2 S 2 o 8 with NaHSO 3 The mass ratio is 1: 1; said emulsifier is a mixture of Span60 and Tween60, wherein the mass ratio of Span60 and Tween60 is 2: 1; finally, stop stirring, cool, let stand for 2h, and centrifuge to remove the oil phase, will get The precipitate was washed thoroughly with ethyl ac...
Embodiment 2
[0007] Example 2: First, 0.6 parts of titanium dioxide, 0.004 parts of sodium silicate and 33 parts of deionized water were fully microwave-dispersed in parts by mass to obtain TiO 2 gel; secondly, get 4.5 parts of soluble starch and deionized water into a starch solution at a mass ratio of 1:8; then, 120 parts of cyclohexane, 1.2 parts of initiator, 2.8 parts of Stir the emulsifier to mix well, then add 10% volume of TiO to the mixture drop by drop 2 After gelling, add 1.2 parts of cross-linking agent N, N'-methylenebisacrylamide and starch solution, and react for 3 hours at 60°C with a stirring speed of 600r / min; the initiator is K 2 S 2 o 8 with NaHSO 3 mixture, where K 2 S 2 o 8 with NaHSO 3 The mass ratio is 1: 1; said emulsifier is a mixture of Span60 and Tween60, wherein the mass ratio of Span60 and Tween60 is 2: 1; finally, stop stirring, cool, let stand for 2h, and centrifuge to remove the oil phase, will get The precipitate was washed thoroughly with ethyl ac...
Embodiment 3
[0008] Example 3: First, 0.5 parts of titanium dioxide, 0.004 parts of sodium silicate and 33 parts of deionized water were fully microwave-dispersed in parts by mass to obtain TiO 2 gel; secondly, get 4.5 parts of soluble starch and deionized water into a starch solution at a mass ratio of 1:8; then, 120 parts of cyclohexane, 1.2 parts of initiator, 2.8 parts of Stir the emulsifier to mix well, then add 10% volume of TiO to the mixture drop by drop 2 After gelling, add 1.2 parts of cross-linking agent N, N'-methylenebisacrylamide and starch solution, and react for 3.5 hours at 55°C with a stirring speed of 600r / min; the initiator is K 2 S 2 o 8 with NaHSO 3 mixture, where K 2 S 2 o 8 with NaHSO 3 The mass ratio is 1: 1; said emulsifier is a mixture of Span60 and Tween60, wherein the mass ratio of Span60 and Tween60 is 2: 1; finally, stop stirring, cool, let stand for 2h, and centrifuge to remove the oil phase, will get The precipitate was washed thoroughly with ethyl ...
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