ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
This report describes a series of recent experiments in which various thermal transitions including stress relaxations and glass transitions in high polymers were characterized by observing birefringence changes during heating and cooling. An automatic recording device employing a hot stage, polarizing microscope, photocell, and chart recorder was employed in these investigations. A general discussion of the utility and advantages of the technique of thermo-optical analysis (TOA) as well as its deficiencies is presented. Characteristic birefringence-temperature profiles of a number of amorphous and semicrystalline polymers are included.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1972.070160203
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