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Determination of heats of volatilization for polymers by differential scanning calorimetry
Author(s) -
Frederick W. J.,
Mentzer C. C.
Publication year - 1975
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1975.070190702
Subject(s) - differential scanning calorimetry , volatilisation , endotherm , polymer , materials science , monomer , calorimetry , methyl methacrylate , polymer degradation , reproducibility , degradation (telecommunications) , thermal , vaporization , analytical chemistry (journal) , chemistry , thermodynamics , organic chemistry , composite material , chromatography , telecommunications , physics , computer science
In the design of thermal degradation processes for polymers, the energy to degrade or volatilize the materials soften must be known. The heats of volatilization for six polymers were measured by differential scanning calorimetry (DSC), where the area under the degradation endotherm peak was shown to be directly proportional to the heat of volatilization. Values measured for poly(methyl methacrylate), which yields monomer quantitatively in the temperature range investigated, agree well with theoretically predicted values. Reproducibility of the method is shown by an average standard deviation of ±10% for the six polymers investigated. Caution must be used when applying data obtained by this method to thermal conditions widely differing from those employed in the DSC.