Wittkop, Markus and Kreitmeier, Stefan and Göritz, Dietmar (1996) The collapse transition of a single polymer chain in two and three dimensions: A Monte Carlo study. JOURNAL OF CHEMICAL PHYSICS, 104 (9). pp. 3373-3385. ISSN 0021-9606, 1089-7690
Full text not available from this repository.Abstract
The collapse transition of a single polymer chain in two and three dimensions was studied using the bond-fluctuation model. The obtained exponents v of the scaling law [S-N(2)]similar to N-2v agree with values proposed in the literature as well as above, at and below the Theta-temperature T-Theta. Transition curves and scaling analysis plots are presented. The scaling function alpha(S)(3) tau N-1/2 vs tau N-1/2 has a pronounced maximum before leveling off in the fully collapsed regime in accordance with the theory [alpha(S)(2)=[S-N(2)]/[S-N(2)](Theta), tau=\(T-T-Theta)/T-Theta\]. An analyzing of the subchain distances leads to disagreements with the blob model. The subchains are locally swollen for T>T-Theta and shrunken for T<T-Theta. The probability distribution function of internal distances for T greater than or equal to T-Theta can be described by scaling functions of the form f(s)(x) similar to x(Ks) exp( - D(s)x(delta s)) for large x, x being the scaled distance. In contrast for T<T-Theta none of these functions describe the data. The dynamic properties above T-Theta are in agreement with the Rouse model, but below T-Theta differences occur; the center of mass diffusion becomes anomalous and the relaxation times rise with a power law in N of the form tau(i)(N)similar to N-2+3/d (d being the dimension of space). (C) 1996 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SELF-AVOIDING WALKS; TO-COIL TRANSITION; END DISTRIBUTION FUNCTION; THETA-POINT; 2 DIMENSIONS; RENORMALIZATION-GROUP; QUANTITATIVE THEORY; DIFFERENT REGIMES; EXCLUDED-VOLUME; LINEAR-POLYMERS |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Dietmar Göritz |
| Depositing User: | Petra Gürster |
| Date Deposited: | 23 May 2024 07:56 |
| Last Modified: | 23 May 2024 07:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51891 |
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