On the Phase Nature of Polymer Brush Collapse upon Solvent Deterioration
β Scribed by Victor M. Amoskov; Tatiana M. Birshtein
- Book ID
- 102497088
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 215 KB
- Volume
- 18
- Category
- Article
- ISSN
- 1022-1344
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The phase nature of polymer brush collapse upon deterioration of the solvent was investigated. The analysis is based on the selfβconsistent field theory and the FloryβHuggins model. It was shown that the transition from good to poor solvent via the ΞΈβpoint is actually a phase transition of high order. This result contradicts the conventional view on this process as a nonβphase one. According to the Ehrenfest classification, this process appears to be a fifthβorder phase transition.
magnified image
π SIMILAR VOLUMES
Recent reports by Nakano and Minoura',\* have claimed that the mechanical degradation of high polymers in solution at low concentrations is enhanced if the polymer is dissolved in a thermodynamically "good" solvent. The minimum concentration used in their study (c = 0.04%) gave solutions
shaped the development of polymer physics. Unfortunately many whom we contacted were unable to contribute, and production constraints gave authors limited time to prepare these notes. We regret not including their voices here. I would like to extend my sincere appreciation to the 14 authors represe
The paper compares the viscous, high-elastic and viscoelastic properties of solutions in various solvents of four polymers (polyisobutylene, polystyrene, polymethyl methacrylate and acetyl cellulose) differing in chain rigidity and the intensity of molecular interaction, over a wide range of composi