Author(s):
1. Dušanka Lekić, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Sunčica Elezović-Hadžić, University of Belgrade, Faculty of Physics, Serbia
3. Nataša Adžić, J.Stefan Institute, Ljubljana, Slovenia

Abstract:
Hamiltonian cycles with bending rigidity are studied on the first three members of the fractal family obtained by a generalization of the modified rectangular (MR) fractal lattice. This model is proposed to describe conformational and thermodynamic properties of a single semi-flexible ring polymer confined in a poor and disordered (e.g. crowded) solvent. Due to the competition between temperature and polymer stiffness there is a possibility for the phase transition between molten globule and crystal phase of a polymer to occur. The partition function of the model in the thermodynamic limit is obtained and analyzed as a function of polymer stiffness parameter s (Boltzmann weight), which for semi-flexible polymers can take on values over the interval (0,1) . Other quantities, such as persistence length, specific heat and entropy are obtained numerically and presented graphically as functions of stiffness parameter s.

Key words:
semi-flexible polymer,disordered media,compact phase,persistence length,specific heat

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
22.06.2016.

Conference:
Contemporary Materials 2016 - Savremeni Materijali