What is it about?
Measuring conversion in curing thermosetts above gel point is difficult. DSC on the other hand is easy method for measuring extent of reaction from the heat of the reaction evolved. The extent of reaction can be assessed from swelling experiments by measuring sol fraction utilizing gelation theory, but the method is tedious. The results of DSC and swelling were correlated and it was established that DSC gave satisfactory precision.
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Why is it important?
DSC method is much faster and simpler method. When calibrated for a given not highly cross-llinked system it would give quantitative results useful for correlation with properties.
Perspectives
DSC method when correlated with swelling is very useful when the process is used for analysis of the same system in repeated experiments.
Professor Zoran S Petrovic
Pittsburg State University
Read the Original
This page is a summary of: Study of post-gelation reaction by differential scanning calorimetry, Polymer, August 1990, Elsevier,
DOI: 10.1016/0032-3861(90)90159-v.
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