Abstract: Reactive ammonium carboxyl ate salts, polyamide amic acid oligomers, and polyamideimide oligomers are made from at least one aromatic diamine, at least one aromatic di-, tri-, or tetra-functional carboxylic acid or functional equivalent thereof, and at least one crosslinkable monomer or crosslinkable end-capper. The crosslinkable monomer or crosslinkable end-capper is reactive with the at least one aromatic diamine or at least one di-, tri- or tetra-functional aromatic carboxylic acid or functional equivalent thereof and has at least one unreacted functional group capable of chain extension and crosslinking after formation of the reactive polyamideimide oligomer. The reactive polyamide amic acid and polyamideimide oligomers have a number average molecular weight (Mn) of about 1,000 to about 10,000 g/mol, calculated using the Carothers equation.

Abstract: The presently disclosed subject matter generally relates to polymer networks having covalent crosslinks, non-covalent crosslinks, and ionic side groups, and methods of making and using same. Specifically, the disclosed polymer networks can be incorporated into membranes, which can be useful in, for example, electrodialysis. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Abstract: Polymer resins for the vat photopolymerization of thermoplastics are provided, in particular for the vat photopolymerization of thermoplastics with exception thermal stability and mechanical properties. In some aspects, the polymer resins are prepared by ring opening of an aromatic dianhydride with an alcohol containing an acrylate or methacrylate to produce a photocrosslinkable diacid monomer; conversion of the photocrosslinkable diacid monomer to a photocrosslinkable diacyl chloride; and polymerization of the photocrosslinkable diacyl chloride with an aromatic diamine to produce a photocrosslinkable precursor polymer. Upon crosslinking and drying, a thermal imidization can yield aromatic polyimide polymers with high yield and with micron-scale structural resolution.