Rheological Behaviors of Polymers with Nanoparticles Tethered at Each End

Song-Qi Zhang; Wen-Qing Wang; Jia-Ping Lin; Li-Quan Wang

doi:10.1007/s10118-023-3052-x

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Rheological Behaviors of Polymers with Nanoparticles Tethered at Each End

RESEARCH ARTICLE | Updated：2024-02-20

- Rheological Behaviors of Polymers with Nanoparticles Tethered at Each End
- Chinese Journal of Polymer Science Vol. 42, Issue 3, Pages: 400-406(2024)
- Affiliations：
  
  Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Author bio：
  
  jlin@ecust.edu.cn (J.P.L.)
  lq_wang@ecust.edu.cn (L.Q.W.)
- Funds：
- DOI：10.1007/s10118-023-3052-x
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Zhang, S. Q.; Wang, W. Q.; Lin, J. P.; Wang, L. Q. Rheological behaviors of polymers with nanoparticles tethered at each end. Chinese J. Polym. Sci. 2024, 42, 400–406

Song-Qi Zhang, Wen-Qing Wang, Jia-Ping Lin, et al. Rheological Behaviors of Polymers with Nanoparticles Tethered at Each End. [J]. Chinese Journal of Polymer Science 42(3):400-406(2024)
Zhang, S. Q.; Wang, W. Q.; Lin, J. P.; Wang, L. Q. Rheological behaviors of polymers with nanoparticles tethered at each end. Chinese J. Polym. Sci. 2024, 42, 400–406 DOI： 10.1007/s10118-023-3052-x.

Song-Qi Zhang, Wen-Qing Wang, Jia-Ping Lin, et al. Rheological Behaviors of Polymers with Nanoparticles Tethered at Each End. [J]. Chinese Journal of Polymer Science 42(3):400-406(2024) DOI： 10.1007/s10118-023-3052-x.

摘要

The nanoparticles at the ends can retard the polymer motion and influence the rheological behavior, where the moduli are less dependent on the frequency as the polymer chain shortens or the nanoparticle becomes large.

Abstract

The polymer with nanoparticles tethered at each end is a unique model for unraveling the effect of chain ends on the polymer dynamics. We investigated the rheological behavior of this kind of polymer by using nonequilibrium molecular dynamics simulation. The effect of polymer lengths and nanoparticle radii on the complex moduli and viscosity was examined. The dependence of complex moduli on the frequency becomes less pronounced as the polymer is short or the nanoparticle is large. The shear thinning behavior was revealed for these systems, and the scaling exponent of complex viscosity with respect to the frequency was found to change from −1/2 to −3/4 as the polymer shortens or the nanoparticle enlarges. The rheological behavior was further explained by analyzing the mean square distance of nanoparticles. The simulation results were compared with the existing experimental finding, showing an agreement. The work provides information for understanding the chain end effect on polymer rheology.

关键词

Keywords

Polymer rheologyModulusViscosityMolecular dynamics

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