ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Conformational relaxation of poly(methyl methacrylate) has been investigated by measuring the temperature dispersion of dynamic viscoelastic functions and the density under systematic thermal histories. Samples were quenched from various temperatures (T Q) in the course of slow cooling through the glass transition temperature (T g). The tan δ curves of samples quenched from T Q 〈 T g agreed with that of the slow-cooled sample in a temperature range above T Q. Densities of the samples at 30 °C were consistent to thermal histories. Segmental conformation is successively frozen from large to small scale of segmental motion during slow cooling.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002890050454
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