Poly(methylphenyl)silane: The molecular weight dependence of the U.V. absorption maxima wavelengths
β Scribed by A.-F. de Mahieu; D. Daoust; J. Devaux; M. de Valck
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 212 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0014-3057
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β¦ Synopsis
The purpose of this paper is to provide a correlation between 2m~ x and molecular weight for poly(methylphenyl)silane by the use of fractionated samples and by on-line coupling of a GPC chromatograph with a u.v. diode-array detector.
π SIMILAR VOLUMES
The dependence of shear and elongational viscosity on the molecular weight of poly(vinylidene fluoride) has been studied using a capillary rheometer. The elongational viscosity was evaluated based on Cogswell's method with two types of capillaries: capillary length (L)/capillary diameter (D) Ο 10 mm
30 g of the ionene poly[(dimethylimino)decamethylene bromide] were fractionated by a continuous counter-current extraction method (CPF) using ethylene glycol monoethyl ether as the solvent and diisopropyl ether as the non-solvent component. The efficiency of the separation was checked by viscometry