DYNAMICALLY CROSSLINKED TOUGH ADHESIVE WITH RECYCLABILITY
A crosslinked adhesive composition comprising: (i) a polymer; (ii) solid particles embedded within the polymer; and (iii) a multiplicity of boronate linkages crosslinking between the polymer and solid particles, wherein the boronate linkages have the formula wherein the polymer and particles are connected to each other through the boronate linkages, and the crosslinked adhesive composition has an ability to bond surfaces and a further ability to thermally debond and rebond the surfaces. Also described herein is a method of bonding first and second surfaces together, the method comprising placing the above-described crosslinked adhesive composition onto the first surface and pressing the second surface onto the crosslinked adhesive composition on the first surface.
1 .- 13 . (canceled)
14 . A method of bonding first and second surfaces together, the method comprising placing a crosslinked adhesive composition onto the first surface and pressing the second surface onto the crosslinked adhesive composition on the first surface, wherein the crosslinked adhesive composition comprises:
(i) a polymer matrix;
(ii) solid particles dispersed throughout the polymer matrix; and
(iii) a multiplicity of boronate linkages crosslinking between the polymer matrix and solid particles, wherein the boronate linkages have the formula
wherein the polymer and particles are connected to each other through the boronate linkages.
15 . The method of claim 14 , wherein said pressing is hot pressing.
16 . The method of claim 14 , wherein at least one of the first and second surfaces is a metal surface.
17 . The method of claim 14 , wherein at least one of the first and second surfaces is a glass or ceramic surface.
18 . The method of claim 14 , wherein, in a successive step, the first and second surfaces are thermally debonded.
19 . The method of claim 14 , wherein the polymer matrix is a thermoplastic polymer.
20 . The method of claim 14 , wherein the polymer matrix is an elastomeric polymer.
21 . The method of claim 14 , wherein the polymer matrix is attached to the boron atom of the boronate linkage and the particles are attached to the oxygen atoms of the boronate linkage.
22 . The method of claim 14 , wherein the polymer matrix contains aromatic groups attached to the boronate linkage.
23 . The method of claim 22 , wherein the polymer matrix is polystyrene or a copolymer thereof.
24 . The method of claim 14 , wherein the solid particles have a metal oxide composition.
25 . The method of claim 14 , wherein the solid particles have an organic composition.
26 . The method of claim 24 , wherein the metal oxide composition is selected from the group consisting of silica, alumina, yttria, zirconia, and titania.
27 . The method of claim 25 , wherein the organic composition is selected from natural and synthetic polymers.
27 . The method of claim 14 , wherein the solid particles have a size of 1-100 nm.
28 . The method of claim 14 , wherein the solid particles have a size of 1-100 microns.