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Opportunity at National Institute of Standards and Technology (NIST)

Polymer Membranes for Water Purification

Location

Material Measurement Laboratory, Materials Science and Engineering Division

RO# Location
50.64.21.B7643 Gaithersburg, MD

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
Chan, Edwin Pak-Nin edwin.chan@nist.gov 301.975.5228
Soles, Christopher L. christopher.soles@nist.gov 301.975.8087
Stafford, Christopher M. chris.stafford@nist.gov 301.975.4368
Stafford, Gery R. gery.stafford@nist.gov 301.975.6412

Description

The availability of clean water is one of the most significant challenges facing the world today. Polymer membrane technologies for water purification are one of the most promising solutions to this problem. We are developing quantitative measurement methods for determining the structure and dynamics of polymer membranes used in water purification, as well as how these properties change over time or after various processing treatments. To facilitate these measurements, we are utilizing a molecular layer-by-layer approach to fabricating model polyamide membrane materials with defined internal structure and chemistry. To probe how membrane structure and dynamics correlate to transport properties, we are applying and refining approaches based on x ray and neutron reflectivity, dielectric spectroscopy, advanced chemical spectroscopy, and scanning probe microscopy. The structure-property-performance relationships obtained from these measurements will enable industry to identify the fundamental mechanisms underlying water transport and fouling, allowing targeted development of membrane materials with higher flux and lower energy consumption.

 

Keywords:
Membranes; Polymers; Water; Structure; Dynamics;

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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