The application relates to the technical field of
pesticide controlled release, in particular to a preparation and application of a
pesticide controlled release carrier, which comprises the following raw materials: a natural
polymer matrix, a temperature-sensitive material, a light-heat material, an acid
solvent, an alkali
solvent and a
pesticide.
Chitosan (CS) is used as a natural
polymer material which is widely sourced, non-toxic and naturally degradable, the spherical gel has the advantages of simple preparation, controllable particle size and rich
surface chemical bonds, and is widely applied to
drug adsorption and delivery. The introduction of nanoparticles can endow the
polymer hydrogel with unique functional characteristics.
Diamond nanodiamond (DND) is a nanoscale
carbon allotrope which is composed of a sp3 carbon
diamond core and a reconstructed sp2 carbon
surface layer, can absorb light in the
ultraviolet, visible and near-
infrared regions in the form of
phonon scattering / lattice vibration and convert it into heat, and has excellent photo-thermal performance. Poly-N-
isopropyl acrylamide (PNIPAm) is a temperature-sensitive material which is in a
sol state at
room temperature and is converted into a
gel state when close to body temperature.