|
| | | | |
| | | |
| Stat |
Members: 3665
Articles: 2'599'751
Articles rated: 2609
20 January 2025 |
|
| | | | |
|
Article overview
| |
|
|
Intramolecular Form Factor in Dense Polymer Systems: Systematic Deviations from the Debye formula | | P. Beckrich
; A. Johner
; A. N. Semenov
; S. P. Obukhov
; H. Benoit
; J. P. Wittmer
; | | Date: |
11 Jan 2007 | | Subject: | Soft Condensed Matter; Statistical Mechanics | | Abstract: | We discuss theoretically and numerically the intramolecular form factor $F(q)$ in dense polymer systems. Following Flory’s ideality hypothesis, chains in the melt adopt Gaussian configurations and their form factor is supposed to be given by Debye’s formula. At striking variance to this, we obtain noticeable (up to 20%) non-monotonic deviations which can be traced back to the incompressibility of dense polymer solutions beyond a local scale. The Kratky plot ($q^2F(q)$ {it vs.} wavevector $q$) does not exhibit the plateau expected for Gaussian chains in the intermediate $q$-range. One rather finds a significant decrease according to the correction $delta(F^{-1}(q)) = q^3/32
ho$ that only depends on the concentration $
ho$ of the solution, but neither on the persistence length or the interaction strength. | | Source: | arXiv, cond-mat/0701261 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
|
| |
|
|
|
REGISTER