An automatic viscometer coupled with a GPC instrument is reported. The calculations which are briefly described give the molecular weight distribution corrected for long-chain branching effect, the variations of the structure parameter 9' and of the long-chain branching frequency 2 with molecular we
Statistical theories of main chain scission and crosslinking of polymers—application to the photolysis and radiolysis of polystyrene studied by gel permeation chromatography
✍ Scribed by C. David; D. Baeyens-Volant
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 711 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
The statistical theories of main chain scission and crosslinking resulting from either homogeneous or inhomogeneous energy dissipation in polymers are summarized. The molecular weight distributions of polystyrene samples subjected in vacuo to 7-rays (homogeneous energy dissipation) or to U.V. irradiation (inhomogeneous energy dissipation) have been measured by GPC for various absorbed doses. The results are discussed according to these theories.
📜 SIMILAR VOLUMES
The mathematical relation for the retention volume for elution chromatography has been extended to include the case of a multicomponent elution gas mixture in which a l l the components are adsorbed appreciably on the adsorbent. The total adsorption, component adsorption, and the K values or the rat