%0 Conference Paper
%A Tzi, E.C.N.
%A Ching, O.P.
%D 2016
%F scholars:7445
%I Elsevier Ltd
%K Adhesion; Gas permeable membranes; Hydrophobicity; Hydrothermal synthesis; Membranes; Pore size; Process engineering; Silicates; Surface treatment; Thermogravimetric analysis, AMH-3; Cross-sectional morphology; Decomposition temperature; Functionalizations; Hydrophobic polymers; Layered silicate; Mixed matrix membranes; Phase inversion techniques, Dispersions
%P 86-92
%R 10.1016/j.proeng.2016.06.443
%T Surface modification of AMH-3 for development of mixed matrix membranes
%U https://khub.utp.edu.my/scholars/7445/
%V 148
%X 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.
%Z cited By 6; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138