Inventors: Lei JD
, Ma GH
, Su ZG
, Kou X
, Geng LY
Method for preparing molecularly imprinted polymer nano-microspheres with uniform size and application thereof
Publication date: 2012
The invention discloses a molecularly imprinted polymer nano-microsphere with average grain size of 200 nm to 100 microns and with grain size distribution coefficient C.V. of not more than 20%. The preparation method comprises the following steps of: firstly, mixing a dispersed-phase solution containing template molecules and a continuous-phase solution to obtain an original emulsion; secondly, filtering the original emulsion by a microporous membrane at a preset pressure to obtain an emulsion with uniform grain size; thirdly, performing cross-linking polymerization on the emulsion in nitrogen to obtain polymer nano-microspheres; fourthly, washing the obtained polymer nano-microspheres to remove template molecules and non-reacted functional monomers in the polymer; and finally, obtaining the molecularly imprinted polymer nano-microspheres with uniform size.
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