Variation of the chain dimensions with the concentration and quality of the monomer and polymer solvent
✍ Scribed by Peter Cifra; Tomáš Bleha
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 691 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0032-3861
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📜 SIMILAR VOLUMES
An equation is derived to estimate the hydrodynamic volume occupied by a typical linear polymer molecule, knowing only the polymer molecular weight and concentration of polymer in the solution. This equation may be applied to solutions above a minimum polymer concentration. Accuracy of the equation
## Abstract Summary: Vapor pressures above the solutions of polystyrene in either cyclohexane (32–60 °C) or toluene (10–70 °C) have been measured by a combination of head space sampling and gas chromatography as a function of the volume fraction __φ__ of the polymer. The thus obtained Flory‐Huggins
Lattice simulations of chains in good, theta and poor solvents were performed with an explicit incorporation of the excluded volume (chain thickness) into the model. The scaling power law for chain dimensions was found to apply in the theta and athermal states and to fail in the region below the the