The invention relates to the technical field of
aerogel microsphere preparation, in particular to a method for preparing composite
nanocellulose aerogel microspheres based on electrostatic field auxiliary regulation and control. Comprising the following steps: forming uniform liquid drops from a
silane modified nano
cellulose suspension through an electrostatic spraying device provided with an annular
electrode group and a real-time monitoring feedback
system; the liquid drops are induced by an electrostatic field in a pre-cooling area to be initially set and then subjected to
liquid nitrogen cryogenic treatment, gradient
freeze drying is conducted, and
aerogel microspheres are obtained; and finally, carrying out
surface modification on the aerogel microspheres, and loading nano microspheres under the assistance of an alternating
electric field to obtain the composite nano
cellulose aerogel microspheres. Through the synergistic effect of the multi-stage
electric field, accurate regulation and control on the whole process of
microsphere forming, internal structure construction and functional compounding are realized, so that the composite
nanocellulose aerogel microspheres with narrow
particle size distribution,
uniform size and adjustable functions are prepared, and the composite
nanocellulose aerogel microspheres have wide application prospects in the fields of adsorption,
catalysis, biological
medicine and the like.