58a Nanomaterials Curricula: An Interdisciplinary Module for Chemical Engineering

Holly A. Stretz, Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN 38501 and Chris Wilson, Department of Mechanical Engineering, Tennessee Technological University, Brown Hall 311, Cookeville, TN 38505.

Teaching engineering modeling to composites engineers for the performance of carbon nanotube (CNT)/polymer nanocomposite materials precipitates at least three challenges. First, nanoparticles can alter the properties of the composite on a variety of scales (multiscale modeling). BS chemical engineers may not prepared to model molecular scale phenomema, e.g. with either quantum mechanics or surface chemistry. If the class is interdisciplinary, certainly mechanical or civil engineers will not have the background coursework to handle molecular modeling. The second challenge for engineering education is ensuring that students have appropriate laboratory tools to characterize on the nanoscale. Finally, the third challenge we note is that the field of nanomaterials is advancing so rapidly that any text will be out of date before it is published. Given these difficulties, engineering students would benefit from inquiry-based or case-study based curricula in nanomaterials as the initial offering, and the case of carbon-nanotube-based composites is certainly topical. At Tennessee Technological University an interdisciplinary team of professors is developing such nanocomposite curricula. The initial phase of curriculum development has involved planning and development of written resources; a handbook on CNT composites originally aimed at mechanical engineers. However the first modules have been beta-tested in an interdisciplinary Polymer Engineering course offered through the Department of Chemical Engineering. The modules are constructed as a challenge: by writing practice questions keyed to the literature, students are asked to evaluate the need for multiscale models based on current experimental data. In the process they are exposed to models for composite performance which are simple limits of behavior. We have isolated several material properties of interest, including modulus, conduction of heat, coefficient of thermal expansion, and permeability. In addition we introduce a module on process safety. This resource provides an introduction to composite theory as it may be applied to CNT/polymer nanocomposites. While the curriculum is still in early planning stages, we believe this beta-curriculum begins to address the questions of how to teach nanomaterials in the undergraduate program in an interdisciplinary and flexible fashion. Assessment will also be discussed.