Functionalized thermoplastic polyurethane, method for producing same, method for producing highly functional medical composite material using same, and medical device including same
The present invention pertains to: a functionalized thermoplastic polyurethane containing a novel chain extender having functionality capable of chemically bonding to a prepolymer polymerized by reacting a polyol (P) with a diisocyanate (R); a functional composite material containing one or more monomers or polymers selected from the group consisting of an anionic functional group, an amphoteric functional group, a perfluorinated compound, a hydrogel, and a silicone polymer; a method for producing same; and an article including same.
1 . A method for preparation of a functionalized thermoplastic polyurethane, comprising
(a) reacting a polyol (P) and a diisocyanate (R) to polymerize a pre-polymer; and
(b) reacting the pre-polymer polymerized in the (a) with a chain extender comprising a functional group (Fn) to prepare a functionalized thermoplastic polyurethane,
wherein the functionalized thermoplastic polyurethane copolymer is represented by Chemical formula 1 below:
in the Chemical formula 1,
Fn is selected from the group consisting of
L is —O—; and
E is ethyl; and
P is a polyol; and
R is a diisocyanate; and
x is an integer of 2 to 50; and
y is an integer of 2 to 100;
the polyol is one or more kinds selected from the group consisting of polyethyleneglycol (PEG), polypropyleneglycol (PPG), polytetramethyleneglycol (PTMG), poly (1,6-hexamethylene carbonate)diol (PHMCD), polydimethyl siloxane (PDMS), and combinations thereof;
the mean molecular weight of each polyol (P) is 400 g/mol to 10,000 g/mol;
the diisocyanate (R) is one or more kinds selected from the group consisting of 4,4′-dicyclohexylmethane diisocyanate (HMDI), 4,4′-diphenylmethane diisocyanate (MDI), and hexamethylene diisocyanate;
wherein a chain extender of Chemical formula 2 below is introduced:
the chain extender is selected from the group consisting of Chemical formulas 15 to 18 below:
2 . The method for preparation of the functionalized thermoplastic polyurethane according to claim 1 , wherein the diisocyanate is used as 2% to 60% by weight based on the total weight of the total functionalized thermoplastic polyurethane; and the chain extender comprising a functional group is used as 1% to 20% by weight based on the total weight of the total functionalized thermoplastic polyurethane.