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Opportunity at National Institute of Standards and Technology (NIST)

Model Polymer Gels and Networks for Rational Sustainable Design

Location

Material Measurement Laboratory, Materials Science and Engineering Division

RO# Location
50.64.21.B8284 Gaithersburg, MD

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

Advisers

name email phone
Kathryn L. Beers kathryn.beers@nist.gov 202-578-8353
Edwin Pak-Nin Chan edwin.chan@nist.gov 301.975.5228
Sara Orski sara.orski@nist.gov 301-975-4671

Description

Understanding the structure and mechanical properties of polymer networks is critical to a variety of soft material applications ranging from sustainability to impact mitigation. The polymer chemistry and structure of these entangled materials are essential to defining their mechanical and (re)use properties, yet the specific relationships are not well established, particularly as bonds break and the network dynamically transitions to a collection of discrete polymer chains. Model polymer networks, with well-defined chemistry and architecture, are needed to carry out quantitative measurements to establish design principles for programmable disentanglement or dissociation of network materials. We are interested in studying the structure and mechanical properties of polymer networks with defined molecular topologies (functionality, branching, and molecular mass distribution), as well as dynamic or reversible polymer chemistry that introduce labile sites vulnerable to catalysis and stimuli-responsive chain cleavage. Experimental methods for this opportunity include gel-permeation chromatography, nuclear magnetic resonance, small angle neutron and x-ray scattering, quasi-static mechanical testing, and high-rate impact testing.

Keywords:
Polymer networks and gels; Polymer; Mechanical testing; High rate impact testing; Controlled polymerization;

Eligibility

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

Stipend

Base Stipend Travel Allotment Supplementation
$74,950.00 $3,000.00
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