The behavior of solute organic compounds and water in poly(dimethylsiloxane)

Mishima, S.; Nakagawa, T.

doi:10.1002/1097-4628(20001107)78:6<1304::aid-app160>3.3.co;2-b

Cited by 4 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Membrane techniques for the removal of VOCs in water can offer potential savings in energy costs. Many studies have been reported on the permeation and removal of VOCs from water by various hydrophobic polymer membranes, mainly composed of poly(dimethylsiloxane) (PDMS),18–28 zeolite‐filled PDMS,29,30 and various other materials 31–33…”

Section: Introductionmentioning

confidence: 99%

Organic‐Inorganic Hybrid Membranes for Removal of Benzene from an Aqueous Solution by Pervaporation

Ohshima

Matsumoto

Miyata

et al. 2005

Macro Chemistry & Physics

View full text Add to dashboard Cite

Summary: Preparation of organic‐inorganic hybrid membranes and their pervaporation permeation and separation characteristics for an aqueous solution of 0.05 wt.‐% benzene are described. In this study, we prepared organic‐inorganic hybrid membranes by the sol‐gel reaction of tetraethoxysilane (TEOS) as an inorganic component with poly(methyl methacrylate‐co‐vinyltriethoxysilane) (P(MMA‐co‐VTES)) and poly(butyl methacrylate‐co‐vinyltriethoxysilane) (P(BMA‐co‐VTES)) as organic components. When an aqueous solution of dilute benzene (0.05 wt.‐%) was permeated through the P(MMA‐co‐VTES)/TEOS and P(BMA‐co‐VTES)/TEOS hybrid membranes, the benzene concentration in the permeate through all hybrid membranes was higher than that in the feed solution. This result demonstrates that these hybrid membranes are benzene selective for an aqueous solution containing dilute benzene. The benzene/water selectivity of the P(BMA‐co‐VTES)/TEOS hybrid membrane was about 20 times higher than that of the P(MMA‐co‐VTES)/TEOS hybrid membrane. Specifically, the P(BMA‐co‐VTES)/TEOS hybrid membrane with a TEOS content of 75 mol‐% showed the highest benzene/water selectivity. The benzene/water selectivity of the hybrid membranes depended significantly on the cross‐linked structures formed by the sol‐gel reaction of VTES and TEOS.

show abstract

Section: Introductionmentioning

confidence: 99%

Organic‐Inorganic Hybrid Membranes for Removal of Benzene from an Aqueous Solution by Pervaporation

Ohshima

Matsumoto

Miyata

et al. 2005

Macro Chemistry & Physics

View full text Add to dashboard Cite

show abstract

“…Its glass transition temperature is among the lowest values recorded for polymers (−129°C) indicating a very flexible polymer backbone with long‐range segmental motion active event at very low temperatures 16–18. As a result, PDMS‐based membranes usually have a relatively higher flux for organics than glass‐state membranes 16, 19–22. Currently, PDMS elastomer is the most commonly used membrane material for the separation of organic vapors from permanent gases 3…”

Section: Introductionmentioning

confidence: 99%

A new technique for preparation of PDMS/ceramic nanocomposite membrane for gaseous hydrocarbons separation

Jannatdoust

Babaluo

Abbasi

et al. 2012

J of Applied Polymer Sci

View full text Add to dashboard Cite

A novel composite membrane using polydimethylsiloxane (PDMS) as a top active layer and ceramic nanocomposite as the support layer was developed for the gaseous hydrocarbons separation. For the fabrication of hybrid membranes, nanocomposite technology applied for manufacturing ceramic supports with controllable microstructures. Also, a new method was used for coating a uniform and no penetrated polymeric layer. Top layer of ceramic support with nanocomposite microstructures was fabricated using 5 wt % a-Al 2 O 3 -SiO 2 bidispersed suspensions with optimum weight fraction of second phase (SiO 2 ) based on the fractional collision frequency theory. PDMS selective layer was coated on the outer surface of the porous ceramic nanocomposite support by dip-coating method. In this respect, the effect of several parameters such as pretreatment temperature, PDMS solution concentration, and number of coated polymeric layers on prepared layers morphology and hybrid membrane performance in the separation of condensable hydrocarbons (iso and n-butane) from hydrogen were investigated. The results showed that the membranes fabricated at 140 C as pretreatment temperature and three polymeric layers by 7, 15, and 15 wt % PDMS concentration, respectively, had a high selectivity (>25 at 2 bar)) in C 4 H 10 /H 2 separation.

show abstract

“…Unlike activated carbon, the separating medium does not require frequent replacement and disposal. Among common organophilic polymers, poly dimethylsiloxane (PDMS) has been proven to have the best performance in the pervaporative removal of volatile organic compounds (VOCs) from their dilute aqueous solutions by many researches 11–14. PDMS exhibits relatively high permeability and is ideal for VOCs to pass through because of the flexible molecule chains and high‐free volume.…”

Section: Introductionmentioning

confidence: 99%

Calix[4]arene‐filled poly dimethylsiloxane (PDMS) membranes for the pervaporative removal of benzene from dilute aqueous solution

Liu

Jiang

Pan

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

ABSTRACT:In this article, tert-butylcalix [4]arene (CA)-filled poly dimethylsiloxane (PDMS) membranes (CA-f-PDMS) were prepared for pervaporative removal of benzene from aqueous solution. In comparison with unfilled PDMS membrane, CA-f-PDMS membranes showed higher permselectivity towards benzene due to the inclusion interaction between benzene and CA. The separation factor increased from 3275 to 5604 when the CA content varies from 0 to 3 wt % in the PDMS membrane. On the other hand, the normalized permeation rate of benzene (NPR b ) decreased with the increase of the degree of crystallization of the membranes due to the crystallinity of CA. The membrane with 1 wt % CA content had the highest degree of crystallization and thus the lowest NPR b , whereas the membrane with 3 wt % CA content was the opposite. Furthermore, the addition of CA increased the elastic modulus of membranes slightly.

show abstract

The behavior of solute organic compounds and water in poly(dimethylsiloxane)

Cited by 4 publications

References 14 publications

Organic‐Inorganic Hybrid Membranes for Removal of Benzene from an Aqueous Solution by Pervaporation

Organic‐Inorganic Hybrid Membranes for Removal of Benzene from an Aqueous Solution by Pervaporation

A new technique for preparation of PDMS/ceramic nanocomposite membrane for gaseous hydrocarbons separation

Calix[4]arene‐filled poly dimethylsiloxane (PDMS) membranes for the pervaporative removal of benzene from dilute aqueous solution

Contact Info

Product

Resources

About