Premium
Supercooling of polydimethylsiloxane
Author(s) -
Helmer J. D.,
Polmanteer K. E.
Publication year - 1969
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.1969.070131008
Subject(s) - supercooling , polydimethylsiloxane , quenching (fluorescence) , materials science , slow cooling , analytical chemistry (journal) , thermodynamics , chemistry , chromatography , composite material , fluorescence , optics , physics
This study was undertaken to determine the quenching rates necessary to supercool polydimethylsiloxane. A technique was developed that allowed controlled quenching rates up to 52°C/see and a modified DTA apparatus was used to obtain thermograms during the warm‐up cycle. No supercooling was observed for a cooling rate of 1.6°C/sec; 56% supercooling was found for a 9.6°C/sec cooling rate; 65% for 10.6°C/sec and 85% for a 52°C/sec cooling rate. Evidence was also presented showing that the crystals in polydimethylsiloxane consist of two forms.