Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness

Polymer thin films with thickness below 100 nm are a fascinating class of 2D materials with commercial and research applications in many branches ranging from coatings to photoresists and insulating materials, to mention just a few uses. Biopolymers have extended the scope of polymer thin films with...

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Main Authors: Stefan Spirk, Chonnipa Palasingh, Tiina Nypelö
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-10-01
Series:Frontiers in Chemical Engineering
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fceng.2021.755446/full
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author Stefan Spirk
Chonnipa Palasingh
Tiina Nypelö
Tiina Nypelö
author_facet Stefan Spirk
Chonnipa Palasingh
Tiina Nypelö
Tiina Nypelö
author_sort Stefan Spirk
collection DOAJ
description Polymer thin films with thickness below 100 nm are a fascinating class of 2D materials with commercial and research applications in many branches ranging from coatings to photoresists and insulating materials, to mention just a few uses. Biopolymers have extended the scope of polymer thin films with unique materials such as cellulose, cellulose nanocrystals, cellulose nanofibrils with tunable water uptake, crystallinity and optical properties. The key information needed in thin biopolymer film use and research is film thickness. It is often challenging to determine precisely and hence several techniques and their combinations are used. Additional challenges with hydrophilic biopolymers such as cellulose are the presence of humidity and the soft and often heterogenous structure of the films. This minireview summarizes currently used methods and techniques for biopolymer thin film thickness analysis and outlines challenges for accurate and reproducible characterization. Cellulose is chosen as the representative biopolymer.
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spelling doaj.art-69e3c631c71f458888fcdd9344cd44d92022-12-21T23:08:45ZengFrontiers Media S.A.Frontiers in Chemical Engineering2673-27182021-10-01310.3389/fceng.2021.755446755446Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film ThicknessStefan Spirk0Chonnipa Palasingh1Tiina Nypelö2Tiina Nypelö3Institute of Bioproducts and Paper Technology, Graz University of Technology, Graz, AustriaApplied Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SwedenApplied Chemistry, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, SwedenWallenberg Wood Science Center, Chalmers University of Technology, Gothenburg, SwedenPolymer thin films with thickness below 100 nm are a fascinating class of 2D materials with commercial and research applications in many branches ranging from coatings to photoresists and insulating materials, to mention just a few uses. Biopolymers have extended the scope of polymer thin films with unique materials such as cellulose, cellulose nanocrystals, cellulose nanofibrils with tunable water uptake, crystallinity and optical properties. The key information needed in thin biopolymer film use and research is film thickness. It is often challenging to determine precisely and hence several techniques and their combinations are used. Additional challenges with hydrophilic biopolymers such as cellulose are the presence of humidity and the soft and often heterogenous structure of the films. This minireview summarizes currently used methods and techniques for biopolymer thin film thickness analysis and outlines challenges for accurate and reproducible characterization. Cellulose is chosen as the representative biopolymer.https://www.frontiersin.org/articles/10.3389/fceng.2021.755446/fullthin filmsthicknessbiopolymersanalyticscellulose
spellingShingle Stefan Spirk
Chonnipa Palasingh
Tiina Nypelö
Tiina Nypelö
Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
Frontiers in Chemical Engineering
thin films
thickness
biopolymers
analytics
cellulose
title Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
title_full Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
title_fullStr Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
title_full_unstemmed Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
title_short Current Opportunities and Challenges in Biopolymer Thin Film Analysis—Determination of Film Thickness
title_sort current opportunities and challenges in biopolymer thin film analysis determination of film thickness
topic thin films
thickness
biopolymers
analytics
cellulose
url https://www.frontiersin.org/articles/10.3389/fceng.2021.755446/full
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AT tiinanypelo currentopportunitiesandchallengesinbiopolymerthinfilmanalysisdeterminationoffilmthickness
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