Differential scanning calorimetry thermal performance data

Thermal Analysis Differential scanning calorimetry was performed using a Perkin-Elmer Pyrus 1 DSC. Scan rates were 20 °C/min and carried out under a helium atmosphere. Thermogravimetric analysis was carried out using a Perkin-Elmer TGA-7 interfaced to a Pyrus Data Station. Analyses were run at 20 C/min scan rates of 20 cc/min flow of either nitrogen or air (as indicated). 

Thermal Analysis - Differential Scanning Calorimetry (DSC) and thermal gravimetric analysis (TGA) were used to characterize the thermal properties of the polymers synthesized. DSC analysis was performed on a Perkin-Elmer Differential Scanning Calorimeter, Model 2C with a thermal analysis data station. Thermal gravimetric analysis (TGA) was carried out on a DuPont thermal gravimeter, Model 951. From the DSC and TGA plots of poly (N-pheny 1-3,4-dimethylene-... 

Differential scanning calorimetry of acetylcholine chloride was performed using a Dupont DSC Model TA 9900 thermal analyzer system, interfaced to a Dupont data collection system. Figure 2 shows the DSC thermogram, which was recorded from 50 to 350°C. 

The principal techniques that have been used in resin cure studies are differential scanning calorimetry (DSC Chapter 7), photocalorimetry (Sections 11.3.1 and 11.3.2), dielectric thermal analysis (DETA Section 12.2.1) and dynamic mechanical thermal analysis (DMTA Section 8.3.2). Earlier differential photocalorimetry (DPC) instruments were based on a DSC instrument. However, these were only partially successful in the analysis of photocurable polymers. The failure to develop a completely adequate system has been the result of two factors. The first and most significant is the change in the intensity of the light with time of operation - as much as an 80% reduction in the first 100 hours of operation. The second reason for the limited success was the lack of data analysis software to convert raw data into easy-to-understand results that could be correlated with actual performance. 

---