PTFE membranes offer broad chemical compatibility with minimal extractables in a wide range of fluids and applications and contains no surfactants. The inherently hydrophobic PTFE membrane is ideally suited for the filtration of compressed air and other process gases.
2021/2/1 · A hydrophobic membrane is characterized by a water contact angle (WCA) above 90 whereas a superhydrophobic membrane above 150 and a low contact angle hysteresis <5 (CAH, the difference between the advancing and receding contact angles) [14,15].
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2021/6/17 · Performance modelling of hydrophobic membranes has been undertaken in previous studies for different MD configurations (Zhang et al. 2012, 2013; Lawal et al. 2014). Flux predictions were performed for PTFE membrane in DCMD under various processZhang ).
The hydrophobic PTFE membrane with hollow fiber structure has a very high specific surface area and provides a mass transfer interface for the two-phase mass transfer. Because PTFE material has good hydrophobicity and chemical stability, compared with other membrane materials (such as polypropylene PP or polyvinylidene fluoride PVDF, etc.), PTFE membrane has a long service life
The hydrophobic polytetrafluoroethylene (PTFE) membrane have excellent retention characteristics, flow rates. It offers a wide range of chemical compatibility with high thermal stability, specially used for the filtration of compressed air/gas, vent air and aggressive chemical solutions including acids, alkalis, solvents, photoresists, etc.
2015/12/23 · Hydrophobic membranes have little or no tendency to absorb water, so that a droplet remains on the surface. The water contact angle of a hydrophobic membrane is usually over 90°. Most polymeric membranes can be regarded as hydrophobic membranes, e.g., PVDF, PTFE, PP, PE, and PSf membranes. Hydrophobic membranes usually possess an unique
PTFE Membrane Distillation Module. Membrane distillation (MD) is a membrane separation process that uses a hydrophobic microporous membrane with the vapor pressure difference on both sides of the membrane as the driving force for mass transfer. It can be used for water distilling and desalination to remove volatile substances from aqueous
2019/6/10 · Hawach PTFE pleated filter cartridge is suitable for filtration of high viscosity solution and strong acid and alkali solution. Feature: Natural Strong Hydrophobic Material Polytetrafluoroethylene (PTFE) tensile film has excellent corrosion resistance, oxidation
2019/9/4 · Titanium nitride (TiN)-modified hydrophobic-treated carbon paper (CP) was prepared by impregnating CP with polytetrafluoroethylene (PTFE) emulsion containing TiN nanoparticles (NPs). Electrochemical measurements showed that CP witnessed an increase in
PTFE membranes are used for liquid clarification of corrosives, solvents, and aggressive fluids. Effective sample filtration is critical to prevent equipment damage. Cytiva's PTFE hydrophobic membrane filters are also suitable for air and gas sterilization* because of
Pure water transport through PTFE and PVDF flat membranes was studied, as well as the dependence of the phenomena on average temperature and recirculation rate at membrane sides. The influence of these operating conditions on mass transfer is also discussed, taking into account mass and heat transfer within the membrane and adjoining liquid phases.
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