Complex heat capacity measurements by TMDSC. Part 2. Algorithm for amplitude and phase angle correction

To treat data from temperature modulated differential scanning calorimetry (TMDSC) in terms of complex heat capacity, one should know heat transfer an d apparatus influences on experimental results. Concise theoretical model f or power compensated DSC is given, which includes description of most impor tant heat transfer paths and apparatus effects. Estimations for real experi mental conditions are made. An algorithm to determine parameters for calibr ation to exclude heat transfer and apparatus effects is proposed. This allo ws to increase upper frequency limit and accuracy of TMDSC measurements. Ba sed on theoretical results the key points of the correction and some experi mental evidence are discussed. (C) 1999 Elsevier Science B.V. All rights re served.