Title

Assembly of Polymeric Nanoparticles into Fibers versus Clusters: Experiment and Simulation

Presenter Information

Patrick McCarver

Department

Chemical and Biochemical Engineering

Major

Chemical Engineering

Research Advisor

Sotiriou-Leventis, Lia
Leventis, Nicholas

Advisor's Department

Chemistry

Funding Source

Missouri S& T Opportunities for Undergraduate Research Experiences (OURE) Program; United States Army Research Office (W911NF-10-1-0476)

Abstract

Aerogels are open pore, ultra-low density polymeric assemblies of nanoparticles that have practical use in many fields due to high surface areas, low thermal conductivities, high acoustic impedance, and low dielectric constants. However, the aggregation of nanoparticles to form aerogels is not well understood. Here, simultaneous "top-down" and "bottom-up" approaches are taken to provide insight into nanoparticle agglomeration into primary and secondary particles in a polyurea aerogel system. The top-down experimental approach seeks to characterize polyurea aerogels using SEM and Elemental Analysis. The bottom-up simulation approach attempts to generate predictions of aerogel properties by constructing molecular components and simulating reaction and aggregation. Eventual results could allow for fine-tuned engineering of aerogel properties based on predetermined requirements.

Biography

Patrick is a senior in Chemical Engineering at Missouri University of Science and Technology. His previous work includes two years of undergraduate research on aerogel systems and a summer research internship at Pacific Northwest National Laboratory working with sea-salt/organic aerosols. In his spare time he enjoys reading and writing science fiction, playing board games, and browsing Wikipedia endlessly.

Research Category

Sciences

Presentation Type

Oral Presentation

Document Type

Presentation

Award

Sciences oral presentation, First place

Location

Turner Room

Presentation Date

03 Apr 2013, 9:00 am - 9:30 am

Comments

Joint Project with Clayton Buback

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Apr 3rd, 9:00 AM Apr 3rd, 9:30 AM

Assembly of Polymeric Nanoparticles into Fibers versus Clusters: Experiment and Simulation

Turner Room

Aerogels are open pore, ultra-low density polymeric assemblies of nanoparticles that have practical use in many fields due to high surface areas, low thermal conductivities, high acoustic impedance, and low dielectric constants. However, the aggregation of nanoparticles to form aerogels is not well understood. Here, simultaneous "top-down" and "bottom-up" approaches are taken to provide insight into nanoparticle agglomeration into primary and secondary particles in a polyurea aerogel system. The top-down experimental approach seeks to characterize polyurea aerogels using SEM and Elemental Analysis. The bottom-up simulation approach attempts to generate predictions of aerogel properties by constructing molecular components and simulating reaction and aggregation. Eventual results could allow for fine-tuned engineering of aerogel properties based on predetermined requirements.