ISSN:
1435-1536
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Description / Table of Contents:
Zusammenfassung Es wurde die TemperaturabhÄngigkeit des komplexen Schubmoduls eines linearen PolyÄthylens (Marlex 50) bei festen Frequenzen zwischen 10−1 und 105 Hz untersucht, wozu die Proben entweder aus der Schmelze bei verschiedenen Temperaturen kristallisiert oder aus verdünnter Xylollösung bei 80
Notes:
Summary The complex shear modulus of a linear polyethylene (Marlex 50), of which samples were either crystallized from the melt at various temperatures or precipitated from a dilute xylene solution, has been measured as a function of temperature at fixed frequencies between 105 and 10−1 c/s. The three relaxation regionsα, Β, γ can be distinguished, and activation energies are determined from the relaxation map. Theγ-process shows a frequency-temperature characteristic which has been divided into three partsγ I,γ II,γ III. Further experimental evidence for the “kink model”, proposed in an earlier paper (reference 4) is taken from the investigation of suitable paraffin mixtures. Measurements on six n-alkane systems, each consisting of an even n-paraffin mixed with a few percent of a paraffin with a chain longer by two C-atoms, are reported.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01500023
Permalink
