The invention discloses a preparation method for a polyhydroxy functional POSS
hybrid material. The preparation method is characterized by the following steps: adding reactants, namely,
polyethylene glycol derivative PEG (C=CH2) containing unsaturated carbon-carbon
double bond at one end, olefinic
organism (RHC=CH2), octa-sulfydryl POSS and dissolvent into a reactor; adding
radical initiator afterthe added reactants dissolve and uniformly disperse; reacting for 40min-4h under the
nitrogen shielding condition at 30-80 DEG C or under an
ultraviolet light condition, thereby acquiring the POSS
hybrid material; removing the remained
radical initiator and unreacted reactants, and
drying, thereby acquiring the polyhydroxy functional POSS
hybrid material. The preparation method disclosed by the invention has the advantages of simplicity in operation, easily acquired reaction materials, fast reaction and mild reaction condition. The polyhydroxy functional POSS
hybrid material prepared according to the invention has the advantages of high
biocompatibility, controllable
hydrophily and hydrophobicity, controllable form under condensed state, multifunctional reaction group and the like.