US 11,884,757 B2
Adhesives
Jonathan James Wilker, West Lafayette, IN (US); Michael Gabriel Mazzotta, Mashpee, MA (US); Michael North, Howell, MI (US); and Amelia Putnam, Mansfield, GA (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Appl. No. 16/959,283
Filed by Purdue Research Foundation, West Lafayette, IN (US)
PCT Filed Dec. 31, 2017, PCT No. PCT/US2017/069167
§ 371(c)(1), (2) Date Jun. 30, 2020,
PCT Pub. No. WO2019/133023, PCT Pub. Date Jul. 4, 2019.
Prior Publication US 2021/0017431 A1, Jan. 21, 2021
Int. Cl. C08F 220/18 (2006.01); C09J 177/00 (2006.01); C08K 5/053 (2006.01)
CPC C08F 220/1804 (2020.02) [C09J 177/00 (2013.01); C08K 5/053 (2013.01)] 17 Claims
 
1. An adhesive composition comprising multiple chains of a copolymer including a first co-monomer selected from one of dopamine methacrylamide, 3,4-dihydroxyphenylalanine or 3,4-dihydroxystyrene, and a second co-monomer comprising a pendant first functional group;
wherein at least two of the first functional groups of different copolymer chains are interlinked non-covalently via:
a neutral hydrogen bond formed between the first functional groups of the interlinked first and second copolymer chains, wherein in the neutral hydrogen bond the following relationship is met: ΔpKa=pKa (DH)−pKa (AH+)>0, wherein pKa (DH) is the pKa value of a hydrogen bond donor and pKa (AH+) is the pKa value of a hydrogen bond acceptor;
a first additive comprising second and third functional groups, each of which form neutral hydrogen bonds with said first functional groups of different copolymer chains; or
a second additive, which is a metal ion, to which said first functional groups of different copolymer chains are bound through a ligand-metal-ligand bond, the first functional groups forming the ligands.