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AssigneeInternational Business Machines Corporation
InventorsDylan J. BODAY, Jeannette M. GARCIA, James L. HEDRICK, Rudy J. WOJTECKI
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Methods of forming nanoporous materials are described herein that include forming a polymer network with a chemically removable portion. The chemically removable portion may be polycarbonate polymer that is removable on application of heat or exposure to a base, or a polyhexahydrotriazine (PHT) or polyhemiaminal (PHA) polymer that is removable on exposure to an acid. The method generally includes forming a reaction mixture comprising a formaldehyde, a solvent, a primary aromatic diamine, and a diamine having a primary amino group and a secondary amino group, the secondary amino group having a base-reactive substituent, and heating the reaction mixture to a temperature of between about 50 deg C. and about 150 deg C. to form a polymer. Removing any portion of the polymer results in formation of nanoscopic pores as polymer chains are decomposed, leaving pores in the polymer matrix.
A polymeric material comprising a plurality of hexahydrotriazine units, hemiaminal units, or both bonded together by a first linkage and a second linkage, wherein the first linkage is thermally stable and resistant to bases and the second linkage is thermally degradable and degradable by a base.
The polymeric material of claim 5, further comprising a substituent having the general structure
A polymeric material comprising a plurality of hexahydrotriazine units, hemiaminal units, or both bonded together by a first linkage and a second linkage, wherein the first linkage is a dianiline linkage that is thermally stable and resistant to bases and the second linkage is a polymer linkage that is thermally degradable and degradable by a base.
A polymeric material comprising a plurality of hexahydrotriazine units, hemiaminal units, or both bonded together by a first linkage and a second linkage, wherein the first linkage is a dianiline linkage that is thermally stable and resistant to bases, and has the general structure
Dependencies are inferred from the claim text.