CPC C08G 73/0233 (2013.01) [A61K 47/59 (2017.08); A61L 27/18 (2013.01); A61L 27/38 (2013.01); A61L 27/44 (2013.01); C08J 3/075 (2013.01); C08J 2379/02 (2013.01); C08J 2379/04 (2013.01)] | 20 Claims |
1. A thermoresponsive hydrogel comprising an aqueous solution of a block copolymer having a general chemical structure of one of the following formulas:
[A]n-[B]m or [B]n-[A]m
wherein block [A] of the block copolymer is chosen from the group consisting of 2-n-propyl-2-oxazine, 2-cyclopropyl-2-oxazine, and 2-butyl-2-oxazine, wherein block [B] of the block copolymer is chosen from the group consisting of 2-methyl-2-oxazoline and 2-ethyl-2-oxazoline,
wherein n is in the range of 20 to 300, wherein m is in the range of 20 to 300, and wherein n and m have the same or approximately the same value, and
wherein the block copolymer is at a concentration of at least 18 wt. % in the aqueous solution to form the thermoresponsive hydrogel.
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