Effect of humidity on the thermal properties and morphology of laponite/PEO multilayered films

PMSE 492

Eduard A. Stefanescu, estefa1@lsu.edu1, Ioan I. Negulescu2, William H. Daly, chdaly@lsu.edu1, and Gudrun Schmidt, gudrun@purdue.edu3. (1) Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, (2) School of Human Ecology, Louisiana State University, Baton Rouge, LA 70803, (3) Department of Biomedical Engineering, Purdue University, 206 S. Intramural Drive, West Lafayette, IN 47907-2032
The structures and thermal properties of a series of new nanocomposite poly(ethylene oxide) / Laponite films have been investigated by differential calorimetric and thermal analysis and complemented by polarized light optical microscopy experiments. The crystalline structures of the nanocomposite multilayered films can be tuned by controlling the composition and the water content. We study the concentration and humidity dependence of polymer crystallinity in selected nanocomposite multilayered films. Complementary microscopy is used to monitor the structural changes.

 

New Concepts in Polymeric Materials
8:00 AM-10:55 AM, Thursday, August 23, 2007 Westin Boston Waterfront -- Grand Ballroom D, Oral

Division of Polymeric Materials: Science & Engineering

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007