A Spectral View of Polymer Adsorption under Nanoconfinement

Ting-Yu Xu; Chiara Di Leva; Zi-Jian Song; Federico Caporaletti; Simone Napolitano

doi:10.1007/s10118-026-3837-9

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A Spectral View of Polymer Adsorption under Nanoconfinement

RESEARCH ARTICLE | Updated：2026-10-19

- A Spectral View of Polymer Adsorption under Nanoconfinement
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-8(2026)
- Affiliations：
  
  a.Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Universite libre de Bruxelles (ULB), Brussels 1050, Belgium
  b.School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
  c.Sustainable Materials Engineering (SUME), Vrije Universiteit Brussel (VUB), Pleinlaan 2, Brussels B-1050, Belgium
- Author bio：
  
  simone.napolitano@ulb.be
- Funds：
- DOI：10.1007/s10118-026-3837-9
  CLC：
- Received：21 July 2026，
  
  Accepted：08 August 2026，
  
  Online First：19 October 2026，
  
  Published：2026-09
- Accepted：
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Xu, T. Y.; Di Leva, C.; Song, Z. J.; Caporaletti, F.; Napolitano, S. A spectral view of polymer adsorption under nanoconfinement. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3837-9

Ting-Yu Xu, Chiara Di Leva, Zi-Jian Song, et al. A Spectral View of Polymer Adsorption under Nanoconfinement[J/OL]. Chinese Journal of Polymer Science, 2026, 441-8.
Xu, T. Y.; Di Leva, C.; Song, Z. J.; Caporaletti, F.; Napolitano, S. A spectral view of polymer adsorption under nanoconfinement. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3837-9 DOI：

Ting-Yu Xu, Chiara Di Leva, Zi-Jian Song, et al. A Spectral View of Polymer Adsorption under Nanoconfinement[J/OL]. Chinese Journal of Polymer Science, 2026, 441-8. DOI： 10.1007/s10118-026-3837-9.

摘要

Abstract

The number of polymer chains irreversibly adsorbed onto a solid substrate decreases systematically in films thinner than roughly ten macromolecular radii of gyration

an effect attributed to the weakening of the van der Waals interaction under nanoconfinement. Here

we demonstrate that this phenomenology has a precise spectral signature. Within our recently developed framework

the adsorption kinetics are described as a superposition of thermally activated processes

and reducing the film thickness exclusively suppresses the weight of the loop-mediated component of the rate spectrum

leaving the slowest and fastest accessible adsorption rates invariant. The apparent growth rate in the logarithmic regime decreased in proportion to the adsorbed amount and

through the effective Hamaker constant

to the film geometry. Therefore

the rate spectrum is a topological property of the polymer melt

while the amount adsorbed through each pathway is set by the depth of the interfacial potential. Temperature and film geometry act as orthogonal control parameters

tuning the kinetics and adsorbed amount independently

which provides a microscopic basis for the rational design of adsorbed polymer layers.

关键词

Keywords

references

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