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Polymer-Based Nanocomposites: An Educational Opportunity for Deaf and Hard of Hearing Students Peggy Cebe, Tufts University, DMR 0704056. Unstretched. a. a. a. a. b. Absorbance (a.u.). Stretched. b. Wavenumber (cm -1 ).

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  1. Polymer-Based Nanocomposites: An Educational Opportunity for Deaf and Hard of Hearing StudentsPeggy Cebe, Tufts University, DMR 0704056 Unstretched a a a a b Absorbance (a.u.) Stretched b Wavenumber (cm-1) Figure – Infrared spectroscopic analysis of nanocomposites with 1.0% of CNTs, before (blue) and after (red) a stretching treatment. Stretching results in a phase change to an electrically active phase, beta. A few special peaks are noted. Background– Nanocomposites are mixtures of two or more components, in which at least one of them has dimensions on the nanometer length scale. Here, polymer nanocomposites are made by adding tiny carbon nanotubes (CNTs) to thermoplastic polymers. Addition of CNT reinforces the polymer, making the resultant nanocomposite material stronger. Objective – To assess the impact of CNTs on the structure of a semicrystalline polymer using infrared spectroscopy. The selected polymer, poly(vinylidene fluoride), is used by industry in electrical applications because of its ability for transduction of electrical energy to mechanical energy, and vice versa. A stretching was applied to the nanocomposites which orients the polymer chains and the CNTs. The crystal phase of the polymer was changed from non-electrical (alpha) to electrically active (beta) as a result of the stretching treatment. Mechanical properties are also under investigation. Data from: Wenwen Huang, Peggy Cebe, Kyle Edenzon, Luis Fernandez, Shabnam Razmpour, Jenna Woodburn. 2008, unpublished data. Names of undergraduate interns are underlined.

  2. Polymer-Based Nanocomposites: An Educational Opportunity for Deaf and Hard of Hearing Students Peggy Cebe, Tufts University, DMR 0704056 Education and Outreach to the Deaf and Hard of Hearing c a b e d (a) 2007 interns Makini Diaz (RIT) and Taiyabah Naeem (Gallaudet) (center l-r), present a poster at the ACS meeting, pictured with Profs. Peggy Cebe (l), and Todd Pagano (RIT) (r). (b) Interns learn about artificial skin at the Tufts Medical School (c) Shabnam Razmpour (RIT) examines a sample. (d) 2008 interns (row 1, l-r) Jenna Woodburn (Gallaudet) Lius Fernandez (RIT), Shabnam Razmpour, Kyle Edenzon (RIT) sign “PBNC2008” for “Polymer-Based Nanocomposites 2008”; (rows 2,3 l-r): Profs. Cebe, Terry Hass, Roger Tobin; Interpreter Francine Graff-James, TA Wenwen Huang, Interpreter Mark Riley (e) Interns visit the Boston Museum of Science.

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