Determination of Montmorillonite Nanocomposite Aggregation Rates Using Real Time X-Ray Diffraction Techniques at High Temperatures NIST GCR 09-924

Published

March 12, 2009

Author(s)

Holly Stretz

Abstract

The current work explored how choice of surfactant, fire temperature and processing pressure affect the assembly process for particles in the barrier layer. The underlying assumption was that the nano-structure of the ceramic portion of the barrier layer would affect flammability, and this assumption was explored as well. In the original research plan, the goals in this first year were to compare how self assembly rates were affected by: (1) Surfactant, (2) Polymer, (3) Initial state of dispersion and (4) Melt rheology. Characterization of these structural changes was accomplished using high temperature real-time X-ray diffraction (HTXRD), a technique available to TTU researchers on a limited basis through the Oak Ridge National Laboratory User Program. Since access to the aforementioned instrument was productive but time-restricted, TTU researchers corroborated the XRD results by investigating a new structure-sensitive detection technique based on gaseous permeability of the formed barrier layer. In addition some early computational work is presented herein to test/validate our primary assumption, that structure of the barrier layer affects flammability.

Citation

Grant/Contract Reports (NISTGCR) - 09-924

Report Number

09-924

NIST Pub Series

Grant/Contract Reports (NISTGCR)

Pub Type

NIST Pubs

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Keywords

high temperature real-time X-ray diffraction, montmorillonite clay, polymer nanocomposites, thermal barrier

Citation

Stretz, H. (2009), Determination of Montmorillonite Nanocomposite Aggregation Rates Using Real Time X-Ray Diffraction Techniques at High Temperatures NIST GCR 09-924, Grant/Contract Reports (NISTGCR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902258 (Accessed April 28, 2024)