Jpn. J. Appl. Phys. 5 (1966) pp. 962-969 |Next Article| |Table of Contents|
|Full Text PDF (835K)| |Buy This Article|
Dielectric Properties of Solid-State Gelatin and Collagen
Research Laboratory, Japan Leather Co.
(Received May 6, 1966)
Dielectric properties of collagen and gelatin are studied in order to get detailed information concerning the properties of the incompletely crystallized part, and as a result to get more complete information about the structure of collagen. Two kinds of dielectric absorption, α- and β-absorption, are observed in the temperature range between -70°C and 200°C and in the frequency range between 30cps and 106cps. The dipoles which contribute to the molecular motions for α- and β-absorption are situated on the polypeptide main chain of the “band part” appearing in the electronmicrograph of collagen fibril. The activation energies of the absorptions are 24∼48 Kcal/mole and 12∼19 Kcal/mole, respectively.
- R. A. Milch, L. J. Frisco and E. A. Szymbowiak: Biorheology 3 (1965) 9.
- Y. Okamoto and K. Saiki: Koll. Zeits. u. Zeits. f. Polym. 194 (1964) 124.
- R. S. Bear: J. Am. Chem. Soc. 64 (1942) 727; 66 (1944) 1297; 65 (1943) 1784; 66 (1944) 2043.
- A. Rich and F. H. C. Crick: Nature 176 (1955) 915.
- P. Doty and T. Nishihara: Recent Advances in Gelatin and Glue Research, ed. G. Stainsby (Pergamon Press, London, 1958) P. 92.
- K. S. Cole and R. H. Cole:
J. Chem. Phys. 9 (1941) 341[CrossRef].
- S. Takahashi: Researches of the Electrotechnical Laboratory No. 539 (1953) 70.
- Y. Ishida and K. Yamafuji: Koll. Zeits. u. Zeits. f. Polym. 177 (1961) 97.
- K. Yamafuji and Y. Ishida: Koll. Zeits. u. Zeits. f. Polym. 183 (1962) 15.