Influence of the rigidity of the backbone and arms on the dynamical and conformational properties of the comb polymer in shear flow

Autor(en)

Xinbiao Huang, Xiaohui Wen, Christos N. Likos, Deyin Wang, Linli He, Hai Li, Rundong Li

Abstrakt

The dynamical and conformational properties of the comb polymer with various rigidities of the backbone and arms in steady shear flow are studied by using a hybrid mesoscale simulation approach that combines multiparticle collision dynamics with standard molecular dynamics. First, during the process of the comb polymer undergoing periodic tumbling motion, we find that the rigidity of the arms always promotes the tumbling motion of the comb polymer, but the rigidity of the backbone shifts from hindering to promoting it with increasing the rigidity of the arms. In addition, the comb polymer transitions from vorticity tumbling to gradient tumbling with the increase in shear rate. Second, the range of variation of the end-to-end distance of the backbone and the average end-to-end distance of the arms increases with the increase in the rigidity of the arms and backbone, respectively, and the range of both changes grows with the increase in shear rate. Furthermore, as the rigidity increases, the moldability of the comb polymer decreases and the orientation angle of the comb polymer increases.

Organisation(en)

Computergestützte Physik und Physik der Weichen Materie

Externe Organisation(en)

Chengdu University of Technology, Zhejiang University (ZJU), Wenzhou University

Journal

Journal of Chemical Physics

Band

161

Anzahl der Seiten

12

ISSN

0021-9606

DOI

https://doi.org/10.1063/5.0230750

Publikationsdatum

10-2024

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 101024 Wahrscheinlichkeitstheorie, 103043 Computational Physics

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie, Physical and Theoretical Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/e5d45d7b-9572-4835-8c17-bb83c0d798cb