Jump to main content
Jump to site search


Water Desorption from Confined Biopolymer

Abstract

We study desorption of water from confined biopolymer (chitosan thin films) by employing temperature dependent specular X-ray reflectivity and spectroscopic ellipsometry. The water desorption is found to occur via three distinct stages with significantly different desorption rates. The distinct rates of water desorption are attributed to the presence of different kinds of water with disparate mobilities inside the biopolymer film. We identify two characteristic temperatures ( Tc1 and Tc2) at which the water desorption rates change abruptly. Interestingly, the characteristic temperatures decrease with decreasing the film thickness. The thickness dependence of the characteristic temperature is interpreted in the context of higher mobility of polymer chains at the free surface for polymers under one-dimensional confinement.

Back to tab navigation

Supplementary files

Publication details

The article was received on 27 Nov 2017, accepted on 09 Feb 2018 and first published on 09 Feb 2018


Article type: Paper
DOI: 10.1039/C7SM02332D
Citation: Soft Matter, 2018, Accepted Manuscript
  •   Request permissions

    Water Desorption from Confined Biopolymer

    L. Pradipkanti and D. K. Satapathy, Soft Matter, 2018, Accepted Manuscript , DOI: 10.1039/C7SM02332D

Search articles by author

Spotlight

Advertisements