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Sulsa and Chips
Department of Chemistry
Colorado State University
Fort Collins, CO 80523
FAX: (970) 491-1801

Thermal Analysis

Measuring the property of material as a function of temperature by a collection of techniques”

Modulated Differential Scanning Calorimeter with liquid nitrogen accessory (DSC 2920)

In DSC, the temperature and differential heat flow between sample and inert reference is monitored. MDSC permits separation of the total heat flow signal into its thermodynamic (heat capacity) and kinetic components thus enable separating overlapping events that are difficult or impossible to do by standard DSC.

DSC can be used to measure the following material properties:

Glass Transition; Crystallization Times and Temperatures; Melting Points; % Crystallinity; Heats of fusion and Reactions; Specific Heat; Oxidative Stability; Rate of Cure; Reaction Kinetics; Purity; Thermal Stability

High Temperature (1600 oC) Differential Thermal Analysis Cell is also available

Thermogravimetric Analyzer (TGA 2950) equipped with Mass Spectrometer to analyze evolved gases

TGA monitors the amount and rate of change in the weight of a material as a function of temperature (upto 1000 oC) and/or time in a controlled atmosphere. This is an extremely useful technique to characterize the materials that exhibit weight loss or gain due to decomposition, oxidation or dehydration. Evolved or absorbed gases can be monitored using Mass-spectrometer attached to the environmental chamber.

Typically TGA is used to measure the Composition of Multicomponent Systems, Thermal and/or Oxidative Stability of Materials, Decomposition Kinetics of materials, Effects of Reactive or Corrosive Atmospheres on Materials and Moisture and Volatile component of Materials

Dielectric Analyzer (DEA 2970) with liquid nitrogen accessory.

DEA measures the capacitive and conductance of a material as function of time temperature (-150-500 oC) and frequency (0.003-100000 Hz). This highly automated analyzer that can measure permitivity (e') loss factor(e"), tan delta and ionic conductivity of solid, powder, film and liquid samples.
 
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