The invention discloses a super-smooth, anti-
corrosion and anti-coagulation
hydrogel composite coating on the surface of a medical instrument as well as a preparation method and application of the super-smooth, anti-
corrosion and anti-coagulation
hydrogel composite coating, and the super-smooth, anti-
corrosion and anti-coagulation
hydrogel composite coating is a surface hydrogel
composite coating formed by taking N-(3, 4-dihydroxyphenethyl)-2-benzoylbenzamide (
BPDA) as a primer and
grafting a hydrophilic
polymer on the primer.
BPDA is deposited on the surface of the substrate, then
hydrophilic monomer surface graft
polymerization is initiated by light, and a
hydrogel coating is constructed on the surface of the
BPDA substrate. The BPDA primer provides excellent corrosion resistance, the corrosion rate of a
metal substrate is effectively reduced, and
benzophenone derivatives with photoreaction activity on BPDA molecules can mediate firm combination of the hydrogel layer; after meeting water, a stable and compact hydrated layer is formed, the super-lubricating property is achieved, adhesion of
protein and cells can be remarkably inhibited, and
thrombus formation is effectively prevented. The anti-corrosion and anti-blood coagulation coating has excellent anti-corrosion and anti-blood coagulation properties, and is widely applicable to anti-blood coagulation and anti-corrosion
surface modification in the fields of
medical instruments and the like.