These hydrophobic PTFE membrane filters made of pure ePTFE laminated onto a polypropylene non-woven layer,
providing strength and high chemical compatibility for aggressive solvent filtration, phase separations, venting, and
aerosol sampling. PTFE (fine powder resin) is expanded into a 3-dimensional web-like structure called ePTFE which
creates billions of microscopic pores. This structure utilizes the inherent hydrophobic (water-resistant) and non-stick
nature of PTFE to allow removal of particulate captured on the membrane surface. This allows air to pass easily through
the membrane while collecting particulate as small as 0.2 micron on its surface. ePTFE membranes and laminates provide
device manufacturers with a consistent, temperature and chemical compatible barrier to microbes and particulate matter.
The optimal combination of air flow and water entry pressure adds value to most device designs.
•Filtration of strong acids and aggressive solutions •Venting applications •Phase separations •Aerosol samplings •Filtration of aqueous solutions (when prewetted with methanol)
PTFE MEMBRANE BIBLIOGRAPHY
Epstein, a. K., Wong, T.-S., Belisle, R. a., Boggs, E. M., & Aizenberg, J. (2012). From the Cover: Liquid-infused structured surfaces with exceptional anti-biofouling performance. Proceedings of the National Academy of Sciences, 109(33), 13182-13187. http://doi.org/10.1073/pnas.1201973109
Wong, T.-S., Kang, S. H., Tang, S. K. Y., Smythe, E. J., Hatton, B. D., Grinthal, A., & Aizenberg, J. (2011). Bioinspired self-repairing slippery surfaces with pressure-stable omniphobicity. Nature, 477(7365), 443-447. http://doi.org/10.1038/nature10447.
Hsu, Yung-Chien. “Calcium enhanced COD removal for the ozonation of phenol solution.” Water Research 41 (2007): 71-78. 6 Aug 2009 ChemWeb Journal
Karthikeyan, Sathrugnan, et al. “Microwave assisted sample preparation for determining water-soluble fraction of trace elements in urban airborne particulate matter: Evaluation of bioavailability.” Analytica Chimcia Acta 576 (2006): 23-30. 6 Aug 2009 ChemWeb Journal