Oleophobic PTFE Membranes
Oleophobic membrane is a super-hydrophobic PTFE membrane modified by hydrophobicity surface treatment (molecular level). 亚博ag真人「信誉保障」 Oleophobic PTFE membrane meets Oil Rating 8 (AATCC 118 : Oil Repellency: Hydrocarbon Resistance Test), staying hydrophobic against low surface tension liquids like lipids and ethyl alcohol/methyl alcohol.
Surface Tension Comparison of Various Membranes and Solvents
|Material||Surface Tension (Dyn/cm, 20℃)|
|Hydrophilic PES Membrane||>85|
|Hydrophobic PTFE Membrane||31|
|Oleophobic PTFE Membrane||19|
亚博ag真人 www.ch-factory.com Note: 1Dyn/cm=1mN/m
The contact angle is formed between membrane and the tangent to the curve of the liquid droplet. The lower surface tension of the membrane, the greater the contact angle and the easier it is to repel liquid droplets. For example, a 0.2 micron hydrophobic PTFE Membrane could resist 5% NaCl solution as a long term even under certain pressure, but have limited repellent with Ethyl Alcohol. An Oleophobic PTFE membrane could solve this, and perform stable resistance with non-polar liquids, excellent air permeability, and easy to roll off of droplets.
亚博ag真人「信誉保障」 hydrophobic PTFE membrane is qualified for common venting cases, but for most of chemotherapeutic medicine infusion venting applications, to secure long duration of non-wetting status and maintain venting function, the vent membrane is required to have a lower surface tension than that of contacting liquids such as Docetaxel,Paclitaxel,Etoposide.And Oleophobic PTFE membrane is therefore introduced because of its super low surface tension.
Oleophobic option is necessary for chemotherapeutic medicine delivery venting （Alcohol Repellent）, and is also recommended for common venting applications because it offers a longer hydrophobic lifetime, a more secured non-leakage promise, and a higher product safety.Any other application which the membrane might be possibily contact extremely low surface tension liquid (i.e. Surfactant, Oils, Alcohol, Cosmetics, benzene), the Oleophobic PTFE membrane will be a better choice.
Ultrasonic, Heat, RF Welding, Mechanical, Inserting Molding
Autoclave,Ethylene Oxide, E-Beam, Gamma Irradiation
0.02, 0.03, 0.05, 0.1, 0.2, 0.45, 0.8, 1.0, 2.0, 5.0, 10.0
Filtration Efficiency ≥99.99999% Brevundimonas diminuta
Air Flow Rates Gurley 17-49sec
WEP(60s) >450 KPa
Thickness 280-440μm (Supported)
- Air Vent / Ventilation
- IV Filter Vent
- Transducer Protector (TP)
- Bacterial Air Vent
- Sensor Protection Cover
- Package Vents
- Drip Chamber Spike Vent
- Dispensing Pin
- Closed System Transfer Devices (CSTDs)
- Urine Meters/Bags
- Ostomy Pouches
Polyester, Polypropylene, Polyolefin, or unlaminated (without substrate/lamination)
Roll, Sheet, Disc, Adhesive Backing, Customization