Preparation and Properties of Physical Gel on Medical Titanium Alloy Surface

Medical titanium alloy Ti-6Al-4V (TC4) has been widely used in the medical field, especially human tissue repair. However, TC4 some shortcomings, which may cause problems with biocompatibility and mechanical compatibility direct contact body. To solve this problem, physical gels are formed on surface of TC4, storage modulus gel matches that soft tissue. 2-bromoisobutyryl bromide (BIBB) dopamine (DA) were to form initiators hydroxylated alloy. Different by changing ratio BIBB DA, optimal one was selected for subsequent reactions. Under action catalyst, L-lactide D-lactide ring-opened polymerized hydroxyethyl methacrylate (HEMA), respectively, macromolecular monomers HEMA-PLLA29 HEMA-PDLA29 a polymerization degree 29. The two stereo-complexed ultrasound HEMA-stereocomplex polylactic acid (HEMA-scPLA29). Based monomers, 2-(2-methoxyethoxy) ethyl (MEO2MA) oligo (ethylene oxide) (OEGMA), crosslinking agent HEMA-scPLA29, attached initiator via Atom Transfer Radical Addition Reaction (ATRP) technology. hydrogels characterized analyzed series instruments. results showed glue within range energy tissue, conducive improving