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Transition measurements using differential thermal analysis techniques
Author(s) -
Dannis Mark L.
Publication year - 1963
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.1963.070070120
Subject(s) - polybutadiene , differential thermal analysis , polymer , glass transition , crystallization , thermal analysis , thermodynamics , materials science , thermal , differential scanning calorimetry , inert , polymer chemistry , chemistry , organic chemistry , composite material , physics , diffraction , copolymer , optics
A system for the study of polymer structure by differential thermal analysis (DTA) techniques is presented. The need for an inert reference body has been eliminated by the use of a thermal delay within the sample itself. Typical data showing both first‐ and second‐order transition behavior for appropriate polymers are presented. The applicability of the technique to liquids is also shown. Three first‐order transitions have been found in trans ‐1,4‐polybutadiene. The insoluble nature of high polymers in one another is again confirmed, even in those systems which disperse well. The latent heat of crystallization of cis ‐1,4‐polybutadiene is about 2.1 kcal./mole.