EMD (Enhanced Materials Division)

Enhanced Materials Division (EMD)

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1 min read

(VIDEO) Hyper-Hydrophobic Membranes Repel Liquid like Nobody’s Business

By Frank Hild on May 21, 2019

Hyper-Hydrophobic Membranes Repel Liquid like Nobody’s Business

Our Ultraflon M18+ is a hyper-hydrophobic PTFE membrane that can be used to separate gas from liquid. There are several of these membranes on the market, but our unique membrane stands alone.

The hydrophobic quality of this membrane allows for air to pass through, but not water (or aqueous solutions). The membrane is clean with no residue or other agents to provide pure filtration. Under pressure it is possible to get liquids with very low surface tension to pass through, which makes Ultraflon M18+ ideal for controlled phase separation as well.

Click here to read how Ultraflon M18+ was recently chosen for a High-Performance Liquid Chromatography application.

Take a look at our short (4 minute) video, embeded below, to see me demonstrate just how hydrophobic this particular membrane is compared to several competitive products.

The other membranes shown in the video are:

  • Porex MD15
  • Versapor LCB-3000
  • Advantech PF100

If you think Ultraflon M18+ may be ideal for your gas-separation filtering application, reach out to our Enhanced Materials Division engineers to explore the possibilities.

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Topics: Enhanced Materials membranes
1 min read

Defined: Hydrophilic, Hydrophobic, Oleophilic, Oleophobic & Hygroscopic

By Frank Hild on February 27, 2019

Hydrophilic, Hydrophobic, Oleophilic, Oleophobic & Hygroscopic

When discussing enhanced materials we often use terms like “hydrophilic/hydrophobic” and “oleophilic/oleophobic.” Just what do these terms mean exactly? Let’s take a quick look.

  • Hydrophilic − Refers to substances that absorb water. A hydrophilic substance will bond, on a molecular level with water.
  • Hydrophobic − Refers to materials that will repel water.
  • Oleophilic − Refers to a substance that absorb oils or nonpolar liquids.
  • Oleophobic − Refers to a substance that repels oils or nonpolar liquids.
  • Hygroscopic − Refers to the ability of a material to absorb humidity from the air. A hygroscopic substance will actively attract and absorb water, without bonding. (A hygroscope is an instrument that indicates changes in humidity.)

Water is itself hydrophilic (it mixes with more water easily) and oils or fats are generally hydrophobic and will separate from water, forming an oily layer.

Note: The suffix "philic" means loving or attracted to. The suffix "phobic" means fear or fearful.

There’s a lot more to learn, but this is certainly a useful place to start. If we can help you sort these terms out or provide information on how to modify materials to enhance (or suppress) any these characteristics, please do not hesitate to reach out to our experts.

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Topics: Surface Modification Enhanced Materials