Direct evidence of colloidal structure on drawn polyacrylonitrile
โ Scribed by Hinrichsen, Georg ;Orth, Herbert
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1971
- Tongue
- English
- Weight
- 460 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0449-2986
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๐ SIMILAR VOLUMES
We provide a direct quantitative evidence that the critical behavior of the Ising model on self-similar lattices depends upon the geometrical features of the underlying structure. Intensive Monte Carlo simulations enable to show that the values of the ratio of exponents = depend upon the lacunarity
X-ray diffraction of polyacrylonitrile (PAN), poly-2-hydroxyethyl methacrylate (POly-HEMA) and their random copolymers containing low proportions of HEMA has been carried out in order to investigate the changes in the PAN structure produced by introducing some HEMA units into the chain. Both crystal
1370 cm-l strong and 1395 cm-I moderate (t-butyl). There are no peaks at all at the following wavenumbers: 1640-1680 cm-l (alkenes), 2100-2260 cm-l (alkynes), 1690-1760 cm-l (aldehydes, ketones, carboxylic acids, esters), 1455-1460 cm-l (CHz), and 718-727 cm-l ((CH&). The spectrum of the compound