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.
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 ‡C gefÄllt, in Methanol ausgewaschen und gepre\t worden waren. Drei Dispersionsgebieteα, Β, γ können unterschieden werden. Die/max-1/T- Charakteristik des γ-Relaxations-prozesses wird in drei Bereicheγ I,γ II,γ III unterteilt. Aktivierungsenergien werden aus geradlinigen Kurvenstücken dieser Charakteristiken bestimmt.
Eine erneute experimentelle Stütze für das in einer früheren Arbeit (4) vorgeschlagene „Kinkenmodell“ stellen Messungen an 6 weiteren n-Paraffin-Mischungssystemen dar, wobei die KettenlÄngen der Mischungspartner sich jeweils um zwei CH2-Gruppen unterscheiden.
Similar content being viewed by others
References
Lindenmeyer, P. H., J. Polymer Sci, Part C1, 5 (1963).
Takayanagi, M., Mem. Fac. Eng. Kyushu Univ.23, 41 (1963).
SaitÔ, N., K. Okano, S. Iwayanagi, andT. Hideshima, Solid State Physics14, 343 (1963).
Pechhold, W., S. Blasenbrey, andS. Woerner, Kolloid-Z. u. Z. Polymer.189, 14 (1963).
Reneker, D. H., J. Polymer Sci.59, 39 (1962).
Pechhold, W., Acustica9, 39 (1959) Fig. 11.
Takayanagi, M., M. Yoshino, andK. Hoashi, J. Japan Soc. Testing Materials10, 418 (1961).
Thurn, H., Kolloid-Z.173, 72 (1960).
Broadhurst, M. G., J. Research66 A, 241 (1962).
Mazee, W. M., Analyt. Chim. Acta17, 97 (1957).
Nechitailo, N. A., A. V. Topchiev, L. M. Rozenberg, andE. M. Terent'eva, Russ. J. Phys. Chem.34, 1268 (1960).
Pitzer, K. S., Disc. Faraday Soc.10, 66 (1951).
Faucher, J. A., Trans. Soc. Rheology3, 81 (1959).
Oskin, E. T. andB. Maxwell, Princeton University Report44A (1957).
Reddish, W. andI. T. Barrie, IUPAC-Symposium (Wiesbaden 1959).
Mikhailov, G. P., S. P. Kabin, andT. A. Krylova, J. Techn. Phys. (USSR)27, 2050 (1957) Sov. Physics-Technical Physics p. 1899.
Okamoto, S. andK. Takeuchi, Bull. Chem. Soc. Japan32, 310 (1959).
Wada, Y., J. Phys. Soc. Japan16, 1226 (1961).
Haeberlen, U., R. Hausser, andF. Noack, Z. Naturforschg.18 a, 689 (1963).
Author information
Authors and Affiliations
Additional information
Parts of this paper were read at the 4th International Congress on Rheology, Providence R. I., 1963.
Rights and permissions
About this article
Cite this article
Pechhold, W., Eisele, U. & Knauss, G. Viscoelastic behavior of linear polyethylene and of paraffin mixtures. Kolloid-Z.u.Z.Polymere 196, 27–35 (1964). https://doi.org/10.1007/BF01500023
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01500023