relation: https://khub.utp.edu.my/scholars/7445/
title: Surface modification of AMH-3 for development of mixed matrix membranes
creator: Tzi, E.C.N.
creator: Ching, O.P.
description: AMH-3 layered silicate is an attractive material for gas separation applications due to its 3D structure with crystallographic pore size of 3.4 à . Nevertheless, AMH-3 is strongly hydrophilic due to the presence of cations between the silicate layers. Therefore, surface modification of AMH-3 is necessary in order to enhance its compatibility with hydrophobic polymer matrix of membranes. In this study, AMH-3 layered silicate was synthesized via hydrothermal synthesis method and functionalized with octyl(methyl)dimethyoxysilane to enhance its hydrophobicity, thereby improve adhesion and dispersion in mixed matrix membrane (MMM). The as-synthesized and functionalized AMH-3 were characterized with analytical tools such as FT-IR, XRD, SAP and contact angle. Functionalized AMH-3 showed higher surface area but reduced pore size. It also exhibited improved hydrophobicity compared to as-synthesized AMH-3. Flat sheet PSf/AMH-3 membranes were subsequently prepared by dry/wet phase inversion technique with varying AMH-3 loadings (1, 3 and 5 wt.). As apparent from the thermogravimetric analysis, as-synthesized and functionalized AMH-3 showed no significant effect on the thermal stability and decomposition temperatures of the resultant MMMs. The synthesized membranes exhibited similar surface and cross-sectional morphologies with good distribution and dispersion of inorganic filler. Functionalized AMH-3 showed improved hydrophobicity, which results in enhanced compatibility and adhesion with the hydrophobic PSf polymer matrix. © 2016 The Authors. Published by Elsevier Ltd.
publisher: Elsevier Ltd
date: 2016
type: Conference or Workshop Item
type: PeerReviewed
identifier:   Tzi, E.C.N. and Ching, O.P.  (2016) Surface modification of AMH-3 for development of mixed matrix membranes.  In: UNSPECIFIED.     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013967828&doi=10.1016%2fj.proeng.2016.06.443&partnerID=40&md5=bdcef2949b65a8bd07f20d2ab8e5a128
relation: 10.1016/j.proeng.2016.06.443
identifier: 10.1016/j.proeng.2016.06.443