title: Failure Mechanisms of Hollow Fiber Supported Ionic Liquid Membranes.
abstract: Hollow fiber supported ionic liquid membranes (SILMs) were tested using the bubble point method to investigate potential failure modes, including the maximum transmembrane pressure before loss of the ionic liquid from the support. Porous hollow fiber supports were fabricated with different pore morphologies using Matrimid(®) and Torlon(®) as the polymeric material and 1-hexyl-3-methylimidalzolium bis(trifluoromethylsulfonyl)imide ([C₆mim][Tf₂N]) as the ionic liquid (IL) component. Hollow fiber SILMs were tested for their maximum pressure before failure, with pressure applied either from the bore side or shell side. It was found that the membranes exhibited one or more of three different modes of failure when pressurized: liquid loss (occurring at the bubble point), rupture, and collapse.
authors.affiliation: National Energy Technology Laboratory, 3610 Collins Ferry Road, Morgantown, WV 26507, USA. mzeh@utexas.edu.
authors.forename: Matthew
authors.initials: M
authors.lastname: Zeh
authors.affiliation: AECOM Technology Corporation, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA. wickramw@netl.doe.gov.
authors.forename: Shan
authors.initials: S
authors.lastname: Wickramanayake
authors.affiliation: National Energy Technology Laboratory, 3610 Collins Ferry Road, Morgantown, WV 26507, USA. david.hopkinson@netl.doe.gov.
authors.forename: David
authors.initials: D
authors.lastname: Hopkinson
keywords: bubble point; collapse; failure mode; hollow fiber; rupture; stability; supported ionic liquid membrane