- Tytuł:
- Characterization of Structure and Self-Diffusion of Elastomers by NMR Method
- Autorzy:
-
Kulagina, T.
Karnaukh, G.
Smirnov, L. - Powiązania:
- https://bibliotekanauki.pl/articles/1401301.pdf
- Data publikacji:
- 2015-04
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
76.20.+q
76.60.Lz
77.84.Jd - Opis:
- In this work the theory of free induction decay in linear and cross-linked flexible polymers with a various average length of a polymeric chain in a wide temperature is represented. It is shown the change of topological structure of linear polymers with increasing of mean molecular weight $M_{w}$, and at $M_{w} > 10^5$ the physical network of entanglements starts being formed. The correlation function of molecular motion which is applied to calculation of diffusion attenuation of spin echo is received. The general approach to calculation of signals of diffusion attenuation spin echo and its application for determination of coefficient of self-diffusion in elastomers with various topological structures is offered. It allowed explanation observed experimentally anomalous diffusion.
- Źródło:
-
Acta Physica Polonica A; 2015, 127, 4; 1128-1132
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł