Dynamics of Drying Process of Poly(ethylene oxide) Solution Investigated by 3D Digital Holographic Microscopy

Sheng-Pei Shao; Xiao Liang; Li-Jun Liu; Jun-Peng Zhao; Xiang-Jun Gong; Guang-Zhao Zhang

doi:10.1007/s10118-025-3319-5

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Dynamics of Drying Process of Poly(ethylene oxide) Solution Investigated by 3D Digital Holographic Microscopy

RESEARCH ARTICLE | Updated：2025-07-15

- Dynamics of Drying Process of Poly(ethylene oxide) Solution Investigated by 3D Digital Holographic Microscopy
- Chinese Journal of Polymer Science Vol. 43, Issue 7, Pages: 1170-1180(2025)
- Affiliations：
  
  a.School of Marine Science and Engineering, South China University of Technology, Guangzhou 510640, China
  b.Faculty of Material Science and Engineering, South China University of Technology, Guangzhou 510640, China
- Author bio：
  
  msxjgong@scut.edu.cn
- Funds：
- DOI：10.1007/s10118-025-3319-5
  CLC：
- Received：18 December 2024，
  
  Revised：27 January 2025，
  
  Accepted：10 February 2025，
  
  Published Online：01 April 2025，
  
  Published：01 July 2025
- Accepted：
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Shao, S. P.; Liang, X.; Liu, L. J.; Zhao, J. P.; Gong, X. J.; Zhang, G. Z. Dynamics of drying process of poly(ethylene oxide) solution investigated by 3D digital holographic microscopy. Chinese J. Polym. Sci. 2025, 43, 1170–1180

Sheng-Pei Shao, Xiao Liang, Li-Jun Liu, et al. Dynamics of Drying Process of Poly(ethylene oxide) Solution Investigated by 3D Digital Holographic Microscopy[J]. Chinese journal of polymer science, 2025, 43(7): 1170-1180.
Shao, S. P.; Liang, X.; Liu, L. J.; Zhao, J. P.; Gong, X. J.; Zhang, G. Z. Dynamics of drying process of poly(ethylene oxide) solution investigated by 3D digital holographic microscopy. Chinese J. Polym. Sci. 2025, 43, 1170–1180 DOI： 10.1007/s10118-025-3319-5.

Sheng-Pei Shao, Xiao Liang, Li-Jun Liu, et al. Dynamics of Drying Process of Poly(ethylene oxide) Solution Investigated by 3D Digital Holographic Microscopy[J]. Chinese journal of polymer science, 2025, 43(7): 1170-1180. DOI： 10.1007/s10118-025-3319-5.

摘要

The digital holographic microscopy (DHM) was performed to capture the drying dynamics of poly(ethylene oxide) (PEO) droplets using a gold nanoparticle tracer

where the heterogeneous flow field in different regions was illustrated.

Abstract

The dynamics of the drying process of polymer solutions are important for the development of coatings and films. In the present work

digital holographic microscopy (DHM) was performed to capture the drying dynamics of poly(ethylene oxide) (PEO) droplets using a gold nanoparticle tracer

where the heterogeneous flow field in different regions was illustrated. This demonstrates that the gold nanoparticles at either the center or the edge regions of the droplet exhibit anisotropic kinematic behavior. At early stage

Marangoni backflow causes gold nanoparticles to move tow

ards the edge firstly

and the circles back towards the droplet center after arriving the contact line with a sudden increase in

axis for 10.4 μm

indicating the scale of the upward-moving microscopic flow vortices. This phenomenon does not occur in water droplets in the absence of polymers. The gold nanoparticles underwent Brownian-like motion at the center of the PEO droplet or water droplet owing to the low perturbation of the flow field. At the late stage of pinning of the PEO droplets

the motion showed multiple reverses in the direction of the gold nanoparticles

indicating the complexity of the flow field. This study enhances the understanding of the drying dynamics of polymer solution droplets and offers valuable insights into the fabrication of surface materials.

关键词

Keywords

references

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