Characterization of Nanomaterials with Thermal Analysis and Hyphenated Techniques

J. Wang
PerkinElmer,
United States

Keywords: nanomaterial, thermal analysis, TGA, DSC, DMA, FTIR, GC/MS

Summary:

With the rapid growth of the nanotechnology market, the need for modern characterization techniques for nanomaterial analysis is increasing. Thermal Analysis has been heavily explored as a standard-alone technique, and connected to other instrumentation such as GC/MS and FTIR as well for evolved gas analysis. This presentation illustrates some typical applications of thermal analysis and such hyphenations with various examples. Thermal analysis is a group of analytical techniques that measure the physical properties of a material (i.e., heat flow, mass, dimension) as a function of temperature. The application of these techniques on both polymer nanocomposites, where nanoparticles are used as a filler material to modify the mechanical and thermal properties, and pure nanomaterials are presented. The effects of particle size and concentration of nanofiller in polymer composite material on stiffness, glass transition, crystallinity can be quantified by Dynamic Mechnical Analysis (DMA) and Differential Scanning Calorimetry (DSC). The purity, thermal stability and composition are measured with Thermogravimetric Analysis (TGA). The application of hyphenated techniques is demonstrated by the characterization of PEG coated Iron oxide nanoparticles using TG-GC/MS and the study of nano Nylon 6 with TG-IR and Principle Component Analysis. The hyphenated techniques helps understand how a material degrades and what gases evolve in real time with precisely controlled heating.