On the viscosity of chain polymers
โ Scribed by A. Isihara
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 216 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0032-3861
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Abtttract-Two expressions for the entropy of isolated polymer chains in general, and Gaussian chains in particular, are examined, and the correct expression indicated. In particular, it is shown that the Wall equation for the entropy change upon perturbation of a Gaussian chain is correct.
The melt viscosity (,Ta) is calculated for polydisperse branched polymers by two methods: (1) by extending Graessley's theory of melt flow of polydisperse linear chains to include the effects of branching, and (2) by empirical deduction leading to the relation (~TB;'/('/L)= [(Ss:)w/ (SL2)~,] w2 for
The viscosity behavior of suspensions flocculated by bridging was examined as a function of adsorption affinity of polymers for the particle surface. The polymer chains having strong affinity form fragile bridges between particles as a result of irreversible adsorption. Because the flocs are broken