Self‐healing imidazolium‐based ionene‐polyamide membranes: an experimental study on physical and gas transport properties. Issue 6 (25th March 2019)

• Record Type: Journal Article
• Authors: Kammakakam, Irshad; O'Harra, Kathryn E; Dennis, Grayson P; Jackson, Enrique M; Bara, Jason E
• Is Part Of: Polymer international. Volume 68:Issue 6(2019)
• Page Start: 1123
• Page End: 1129
• Publication Date: 2019-03-25
• Subjects: imidazolium‐ionene -- polyamides -- polymer membranes -- CO2 separation -- self‐healing analysis; Plastics -- Periodicals; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1002/pi.5802
• Languages: English
• ISSNs: 0959-8103

Abstract

ABSTRACT: A new series of six imidazolium‐based ionenes containing aromatic amide linkages has been developed. These ionene‐polyamides are all constitutional isomers varying in the regiochemistry of the amide linkages (para, meta) and xylyl linkages (ortho, meta, para) along the polymer backbone. The physical properties as well as the gas separation behaviors of the corresponding membranes have been extensively studied. These ionene‐polyamide membranes show excellent thermal and mechanical stabilities, together with self‐healing and shape memory characteristics. Most importantly, [TC‐API( p )‐Xy][Tf2 N] and [IC‐API( m )‐Xy][Tf2 N] membranes (TC, terephthaloyl chloride; API, 1‐(3‐aminopropyl)imidazole; Xy, xylyl; Tf2 N, bis(trifluoromethylsulfonyl) imide; IC, isophthaloyl chloride), where the amide and xylyl linkages are attached at para and meta positions, exhibit superior selectivity for CO2 /CH4 and CO2 /N2 gas pairs. We also demonstrate the transport properties and diverse applicability of our newly developed ionene‐polyamides, particularly [TC‐API( p )‐Xy][Tf2 N], for various industrial applications. © 2019 Society of Chemical Industry Abstract : Investigation of the thermo‐physical behavior and transport performance of novel ionic polyamide materials applied in membrane‐based separations.