Purification of natural gas using thermally rearranged polybenzoxazole and polyimide membranes – a review: part 1. Issue 9 (September 2016)

• Record Type: Journal Article
• Authors: Woock, Tucker; Bjorgaard, Stacy; Tande, Brian; Alshami, Ali
• Is Part Of: Membrane technology. Year 2016:Issue 9(2016)
• Page Start: 7
• Page End: 12
• Publication Date: 2016-09
• Subjects: Membranes (Technology) -- Periodicals; 530.4275
• DOI: 10.1016/S0958-2118(16)30191-4
• Languages: English
• ISSNs: 0958-2118

Abstract

Abstract : This feature article – published in two parts – focuses on the evolution of polyimide as a gas separation membrane, its subsequent transformation into polybenzoxazole and various studies done to optimise the separation ability of polybenzoxazole. The first instalment, which appears here, provides theory and background, including details of the solution-diffusion model and a description of fractional free volume. It also discusses the limitations of membrane separation and the permeability/selectivity trade-off, and covers physical ageing, plasticisation, polyimide synthesis, design of polyimide, thermal annealing and cross-linking.