Hollow polymer nanometer microspheres and preparation method thereof
A technology of nano-microspheres and polymers, applied in the field of nano-materials, can solve the problems that the product composition is not easy to be uniform, the particles are easy to agglomerate, etc., and achieve the effect of uniform size and good monodispersity.
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Embodiment 1
[0033] (1) Weigh 50 mg of DFC, add DFC to 20 mL of methanol, and dissolve completely by ultrasonic to obtain a transparent solution A;
[0034] (2) Weigh 35mg of TB, add TB into 20mL of ethanol, and dissolve completely by heating to obtain a transparent solution B;
[0035] (3) Under the condition of stirring at 25°C, add solution B dropwise (dropping speed is 5mL / min) into solution A, and react for 12 hours after the dropwise addition to obtain solution C;
[0036] (4)~(5) After the reaction is over, weigh 50mg of ethylenediamine and dissolve it in 50mL of methanol, add it to solution C in step (3), the ratio of solution C to solution D is 100:1, react for 2 hours, centrifuge get the product.
[0037] Please check Figure 1~2 , a hollow polymer nanosphere prepared by the method of this embodiment is a polymer sphere with a hollow structure; the diameter of the polymer sphere is 200-500 nm, and the outer shell is 5-40 nm thick and contains B and N elements. matter; the gene...
Embodiment 2
[0039] (1) Weigh 60mg of DEC, add DEC to 40mL of methanol, and dissolve completely by ultrasonic to obtain a transparent solution A;
[0040] (2) Weigh 30 mg of TB, add TB into 20 mL of ethanol, and dissolve it by heating to obtain a transparent solution B;
[0041] (3) Under the condition of stirring at 30°C, add solution B dropwise (dropping speed is 8mL / min) into solution A, and react for 12 hours after the dropwise addition to obtain solution C;
[0042] (4)-(5) After the reaction, weigh 20 mg of ethylamine and dissolve it in 100 mL of methanol, add it to the solution C in step (3), react for 2 hours, and centrifuge to obtain the product.
[0043] Please check image 3 , a hollow polymer nanosphere prepared in this embodiment is a polymer sphere with a hollow structure;
Embodiment 3
[0045] (1) Weigh 30 mg of DC, add DC to 30 mL of ethanol, and dissolve completely by ultrasonic to obtain a transparent solution A;
[0046] (2) Weigh 50mg of TEB, add TEB into 50mL of methanol, and dissolve completely by ultrasonic to obtain transparent solution B;
[0047] (3) Under the condition of stirring at 30°C, add solution B dropwise (dropping speed is 4mL / min) into solution A, and react for 12 hours after the dropwise addition to obtain solution C;
[0048] (4)-(5) After the reaction, weigh 30 mg of propylamine and dissolve it in 200 mL of methanol, add it to the solution C in step (3), react for 2 hours, and centrifuge to obtain the product.
[0049] A kind of hollow polymer nano-microsphere prepared by the present invention utilizes the difference in the migration rate of components inside and outside the polymer nano-particle (Kirkendall effect) to realize one-step in-situ preparation, and the product has good monodispersity, uniform size, and shell The controllabl...
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