Preparation of mixed matrix membrane using cellulose acetate incorporated with synthesized KIT-6 silica

S.H. Ding; T.L. Chew; P.C. Oh; A.L. Ahmad; Z.A. Jawad

doi:10.15282/jmes.12.1.2018.17.0311

Authors

S.H. Ding Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
T.L. Chew Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
P.C. Oh Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
A.L. Ahmad School of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Z.A. Jawad Curtin University Malaysia, Faculty of Engineering and Science, Chemical Engineering Department, 250CDT, 98009 Miri, Sarawak, Malaysia

DOI:

https://doi.org/10.15282/jmes.12.1.2018.17.0311

Keywords:

KIT-6, CA; mixed matrix membrane; dry phase inversion.

Abstract

There is increasing interest among researchers to develop Mixed Matrix Membranes (MMMs), by incorporating fillers in polymer membranes. However, these membranes always suffer from a trade-off between permeability and selectivity as proven by Robeson in upper bound curves developed in gas separation applications. In current project, mesoporous silica, KIT-6 was synthesized and followed by incorporation of KIT-6 as filler into cellulose acetate (CA) matrix to form MMMs. The fabrications of MMMs were done by using dry phase inversion method. The KIT-6 loadings in the MMMs were varied from 2 to 10 wt%. The properties of KIT-6 and membranes were characterized with Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray diffraction (XRD) and thermal gravimetric analysis (TGA). The effect of KIT-6 loadings on the properties of the formed MMMs was investigated. XRD and FTIR results suggested that KIT-6 mesoporous silica is successfully synthesized. The TGA curve indicate the overall weight loss of 3.02 % for KIT-6 and 72.29-86.77 % for all the membranes. The successful incorporation of silica particles into CA polymer matrix is confirmed by FTIR spectrum while MMMs images from SEM suggested that KIT-6 silica powder could embed well with CA polymer matrix. Defect-free MMMs could be fabricated and potential to be use in future especially in gas separation.

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