Synthesis, gas transport and dielectric properties of fluorinated poly(arylene ether)s based on decafluorobiphenyl

Synthesis and gas transport properties of polyamide membranes containing PDMS groups

“…The fabricated PA-PDMS-x membranes exhibited very promising results, for CO 2 /N 2 gas pairs, the data point of PA-PDMS-20 was close to the Robeson line in 2008 and for O 2 /N 2 gas pairs which was close to the Robeson line in 1991. [27][28][29][30] 3.4 Effect of operating temperature…”

CH4‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification

“…Increasing gas sorption leads to the higher mobility of polymer chains and higher free volume production in the membrane matrix, and as a result, the gas diffusion through the membrane increases. Therefore, the increase in gas sorption and diffusion results in higher CH 4 and CO 2 permeation with increasing feed pressure [6,7,49,50].…”

Teaching Old Polymers New Tricks: Improved Synthesis and Anomalous Crystallinity for a Lost Semi‐Fluorinated Polyaryl Ether via Interfacial Polymerization of Hexafluoroacetone Hydrate and Diphenyl Ether

“…[25] This methodology requires very high polymerization temperatures and several synthetic steps to obtain the monomer containing the required Ar-F bond, whereas bisphenol AF has been commercially available for decades. [26][27][28][29] However, the only report known for the polymerization of DPE and hexafluoroacetone (HFA) (Scheme 1b) was by DuPont researchers Stamatoff and Wittmann in a 1966 US Patent (3.291.777). [30] Dupont reported the EAS synthesis and polymerization of 2-(4-phenoxyphenyl)hexafluoroisopropanol catalyzed by HF/BF 3 at 170 °C leading to insoluble (presumably cross-linked) 6F-PAE that could be compression molded from granulated polymer after solvent swelling.…”