Effects of novel silane modification of zeolite surface on polymer chain rigidification and partial pore blockage in polyethersulfone (PES)–zeolite A mixed matrix membranes

Molecular interactions were constructed to control polymer chain conformation to fabricate mixed matrix membranes with tunable free volumes, exhibiting simultaneously improved butanol permeability and selectivity.

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Interfacial Defects on Mixed Matrix Membranes and Mitigation Techniques for Gas Separation: A Review

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.625.653 ◽

2014 ◽

Vol 625 ◽

pp. 653-656 ◽

Cited By ~ 3

Author(s):

Biruh Shimekit ◽

Azmi Mohd Shariff ◽

Hilmi Mukhtar ◽

Mohamad Azmi Bustam ◽

Ali E.I. Elkhalifah ◽

...

Keyword(s):

Gas Separation ◽

Polymer Matrix ◽

Polymeric Membranes ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Trade Off ◽

Interfacial Defects ◽

Pore Blockage ◽

Mitigation Techniques ◽

Matrix Membranes

Development of novel mixed matrix membranes (MMMs) has become frontier candidates for improving the upper bound trade-off curve between permeability and selectivity of gases for industrial polymeric membranes. However, fabrication of ideal MMMs is practically challenging as the dispersion of inorganic phase into the polymer may produce polymeric-inorganic interfacial defects at the vicinity of the polymer matrix. For instance, the inorganic phase may cause interfacial void, polymer chain rigidification or partial pore blockage on the overall MMMs. Since there are only few studies that specifically focus on the issues of the interfacial morphology of MMMs, therefore, the present study provides brief description of the aforementioned interfacial (non-ideal) defects of MMMs and summarizes the techniques used to repair the interfacial defects for enhanced gas separation in MMMs.

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Synthesis and characterisation of MOF/ionic liquid/chitosan mixed matrix membranes for CO2/N2 separation

RSC Advances ◽

10.1039/c5ra19331a ◽

2015 ◽

Vol 5 (124) ◽

pp. 102350-102361 ◽

Cited By ~ 54

Author(s):

Clara Casado-Coterillo ◽

Ana Fernández-Barquín ◽

Beatriz Zornoza ◽

Carlos Téllez ◽

Joaquín Coronas ◽

...

Keyword(s):

Ionic Liquid ◽

Mixed Matrix Membranes ◽

Mixed Matrix ◽

Interfacial Contact ◽

Pore Blockage ◽

Matrix Membranes

The CO2 permeability and CO2/N2 selectivity of IL–CS membranes is improved by adding nano-HKUST-1 and ZIF-8, and predicted accurately by Maxwell-derived model as a function of interfacial contact, crystallinity and pore blockage with temperature.

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Effect of zeolite surface modification with ionic liquid [APTMS][Ac] on gas separation performance of mixed matrix membranes

Separation and Purification Technology ◽

10.1016/j.seppur.2018.05.040 ◽

2018 ◽

Vol 205 ◽

pp. 176-183 ◽

Cited By ~ 23

Author(s):

Ayesha Ilyas ◽

Nawshad Muhammad ◽

Mazhar Amjad Gilani ◽

Ivo F.J. Vankelecom ◽

Asim Laeeq Khan

Keyword(s):

Ionic Liquid ◽

Surface Modification ◽

Gas Separation ◽

Mixed Matrix Membranes ◽

Separation Performance ◽

Mixed Matrix ◽

Zeolite Surface ◽

Gas Separation Performance ◽

Matrix Membranes

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Preparation and characterization of polysulfone/zeolite mixed matrix membranes for removal of low-concentration ammonia from aquaculture wastewater

Water Science & Technology ◽

10.2166/wst.2017.545 ◽

2017 ◽

Vol 77 (2) ◽

pp. 346-354 ◽

Cited By ~ 3

Author(s):

Pourya Moradihamedani ◽

Abdul Halim Abdullah

Keyword(s):

Pure Water ◽

Water Flux ◽

Mixed Matrix Membranes ◽

Mixed Matrix Membrane ◽

Mixed Matrix ◽

Low Concentration ◽

Pore Blockage ◽

Pure Water Flux ◽

Aquaculture Wastewater ◽

Matrix Membranes

Abstract Removal of low-concentration ammonia (1–10 ppm) from aquaculture wastewater was investigated via polysulfone (PSf)/zeolite mixed matrix membrane. PSf/zeolite mixed matrix membranes with different weight ratios (90/10, 80/20, 70/30 and 60/40 wt.%) were prepared and characterized. Results indicate that PSf/zeolite (80/20) was the most efficient membrane for removal of low-concentration ammonia. The ammonia elimination by PSf/zeolite (80/20) from aqueous solution for 10, 7, 5, 3 and 1 ppm of ammonia was 100%, 99%, 98.8%, 96% and 95% respectively. The recorded results revealed that pure water flux declined in higher loading of zeolite in the membrane matrix due to surface pore blockage caused by zeolite particles. On the other hand, ammonia elimination from water was decreased in higher contents of zeolite because of formation of cavities and macrovoids in the membrane substructure.

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Mixed Matrix Membranes from Crosslinked Poly(vinyl alcohol)(PVA) Composited with Zeolite 4A Grafted with Poly(2-hydroxyethyl methacrylate)(zeolite-g-PHEMA)

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.93-94.137 ◽

2010 ◽

Vol 93-94 ◽

pp. 137-140 ◽

Cited By ~ 3

Author(s):

Santi Khoonsap ◽

Paveena Khansawai ◽

Sittipong Amnuaypanich

Keyword(s):

Bound Water ◽

Mixed Matrix Membranes ◽

Poly Vinyl Alcohol ◽

Mixed Matrix ◽

Zeolite Surface ◽

Vinyl Silane ◽

Zeolite 4A ◽

Ft Ir ◽

Ft Ir Spectroscopy ◽

Matrix Membranes

The mixed matrix membranes were prepared from crosslinked PVA embedded with zeolite 4A that was grafted with PHEMA. The PHEMA was grafted onto the zeolite surface by first, attaching the vinyl-silane onto the zeolite surface and subsequently polymerizing HEMA monomer via the free-radical polymerization. The FT-IR spectroscopy confirmed the successful grafting of PHEMA on the zeolite. The grafting percentage determined by thermalgravimetry analysis (TG) was found to increase with the amount of HEMA monomer. The membrane swelling in water and pure acetone revealed the decreasing trend with increased the zeolite loading. Examined by DSC, the amount of non-freezing bound water decreased with increasing the zeolite in the membranes.

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