Open AccessFORCE-INDUCED DESORPTION OF SEMI-FLEXIBLE POLYMERS IN NON-HOMOGENEOUS MEDIA
Author(s) -
Sunčica ElezovićHadžić,
Ivan Živić,
Dušanka Lekić
Publication year - 2018
Publication title -
contemporary materials
Language(s) - English
Resource type - Journals
eISSN - 1986-8677
pISSN - 1986-8669
DOI - 10.7251/comen1801087e
Subject(s) - desorption , polymer , materials science , rigidity (electromagnetism) , phase diagram , perpendicular , homogeneous , lattice (music) , flexural rigidity , thermodynamics , condensed matter physics , composite material , phase (matter) , chemistry , physics , mathematics , adsorption , geometry , organic chemistry , acoustics
Force-induced desorption of semi-flexible linear polymers in good solvents and non-homogeneous media is studied. We apply the model of self-avoiding walk with bending rigidity on 3-simplex fractal lattice. One boundary of the lattice represents an adsorbing wall, while an external force (perpendicular to the wall) pulls the polymer from the wall. Due to the hierarchical structure of the lattice under study, the phase diagram of polymer critical behavior can be exactly studied by real-space renormalization group method. Temperature dependence of the critical force, at which desorption occurs, is obtained and discussed for various values of the bending rigidity. Influence of the force and the polymer rigidity on the nature of desorption phase transition is also analyzed. All obtained results are compared with the related previous ones.