Mixed matrix membranes prepared from poly(vinyl alcohol) (PVA) incorporated with zeolite 4A-graft-poly(2-hydroxyethyl methacrylate) (zeolite-g-PHEMA) for the pervaporation dehydration of water–acetone mixtures

2011 ◽  
Vol 367 (1-2) ◽  
pp. 182-189 ◽  
Author(s):  
Santi Khoonsap ◽  
Sittipong Amnuaypanich
Keyword(s):  
Vinyl Alcohol ◽  
Mixed Matrix Membranes ◽  
Poly Vinyl Alcohol ◽  
Hydroxyethyl Methacrylate ◽  
Mixed Matrix ◽  
Zeolite 4A ◽  
Matrix Membranes

Poly(vinyl alcohol) multilayer mixed matrix membranes for the dehydration of ethanol–water mixture

2006 ◽  
Vol 268 (2) ◽  
pp. 113-122 ◽  
Author(s):  
Huai-Min Guan ◽  
Tai-Shung Chung ◽  
Zhen Huang ◽  
Mei Lin Chng ◽  
Santi Kulprathipanja
Keyword(s):  
Vinyl Alcohol ◽  
Mixed Matrix Membranes ◽  
Poly Vinyl Alcohol ◽  
Water Mixture ◽  
Mixed Matrix ◽  
Matrix Membranes

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

2010 ◽  
Vol 93-94 ◽  
pp. 137-140 ◽  
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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