Basic Information
Abstract Number: 180-15    
Author Name: Peter J Ralbovsky Affiliation: NETZSCH Instruments NA, LLC
Session Title: New Developments in Analytical Instrumentation and Software
Event Type: Sunday Poster
Event Title: Multiple Mode Calorimeter Performance Tests for Material Characterization Studies
Presider(s):   Start Time: ( Slot # 15 )
Date: Sunday, March 13th, 2011 Location: 412A
Keywords: Food Science, Materials Characterization, Pharmaceutical, Thermal Analysis

Abstract Content
The Multiple Mode Calorimeter or MMC is a new bench top calorimeter platform designed to measure the temperature, pressures, and energies related to physical and chemical changes of pure compounds and chemical mixtures quickly and efficiently. The platform consists of an electronic base which has interchangeable calorimeter assemblies providing users with many modes of operation including constant temperature rate scanning (like a DSC), adiabatic testing (like an ARC), constant power input scanning, or isothermal testing. Sample injection and stirring are also possible. The calorimeter modules can be detached from the electronic base for operation in hoods or glove boxes.

This instrument uses a sample size larger than a DSC, about 1-3 grams, to accommodate sample addition and stirring. The larger sample size facilitates the measurement of multi-component and multi-phase sample systems. Temperature and pressure are recorded as a function of time. From the input energy we are able to measure endotherms, exotherms, and heat capacity, as well as temperature and pressure rates for determination of thermodynamic and kinetic parameters.

Three different modules were tested using a variety of sample types in a variety of operational modes to measure the performance and capability of the instrument. Tests were conducted internationally at different lab sites. Repeats were conducted locally and across the testing community to measure and ensure instrument precision. Well known DSC tests materials as well as some materials listed in the draft version of the new ASTM Kinetic Test Standard were tested and compared well to the accepted literature values.