Web2 Jul 2013 · This study investigates a new approach to fabricate thin-film composite (TFC) hollow fiber membranes via interfacial polymerization for forward osmosis (FO) applications. Different degrees of sulfonation of polyphenylenesulfone (PPSU) were adopted as membrane substrates to investigate their impact on water flux. WebThis study demonstrates that thin films, after electrochemical modification, can be electrocatalysts for the oxygen reduction reaction and potentially used for applications in energy production and storage. ... by coating the films with a thin carbon layer through exposure to furfuryl alcohol fumes followed by carbonization and sulfonation with ...

Self-Assembly Investigations of Sulfonated Poly(methyl ... - Hindawi

WebThe thin films were prepared by spin casting onto glass substrates under ambient conditions. In addition, the bulk samples were cast at ambient conditions for at least seven days in order to promote the thermodynamically stable phases. The structure in the bulk films was studied with small-angle X-ray scattering (SAXS). Web16 Apr 1998 · Abstract: Sulfonation of linear alkylbenzenes by reaction with sulfur trioxide is the predominant route to anionic surfactants other than soap. In the case study presented … kit hatrrington latest

Thin film - Wikipedia

Web4 Feb 2015 · The degree of sulfonation determined by 1 H NMR in DMSO-d6 using a AscendTM 400 (Bruker) at a resonance frequency of 400 MHz, ... The thin films exhibit a uniaxial optical anisotropy that implies preferred orientations of the polymer chains, which are for SPEEK in the in-plane direction. In turn, the preferred molecular orientations lead to ... Web1 Feb 2000 · Due to their overall characteristics, the SO 3 –air sulfonation of various organic feeds is best conducted in falling film reactors. This type of reaction is highly exothermic [1], [2], [3] with very fast kinetics [4].A more or less realistic assumption that mass transfer in the gas phase is the controlling step in the process has been reported in many studies [2], [3]. kit hat circular knitting needles