Recyclable heat-resisting polymer poly(ether azaindole ketone)-H+via hydrogen bonding crosslinking

Chemically crosslinked heat-resisting polymers have many industrial applications, but are difficult to recycle or rework. We prepared a novel recyclable hydrogen bonding crosslinked polymer PEAINKH(+), which possesses outstanding thermal stability including high T-g (246 degrees C) and Td (489 degrees C). And the hydrogen bonding interactions can be further removed via external alkali to recover the linear polymer PEAINK, which endows the crosslinking polymer with a recyclable behavior.