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The Quantitative Nanomechanical Mapping of Starch/Kaolin Film Surfaces by Peak Force AFM

Department of Applied Physics, Lublin University of Technology, 20-618 Lublin, Poland
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Polymers 2021, 13(2), 244; https://doi.org/10.3390/polym13020244
Received: 27 November 2020 / Revised: 8 January 2021 / Accepted: 8 January 2021 / Published: 12 January 2021
(This article belongs to the Section Polymer Analysis and Characterization)
Starch films modified with additives are materials increasingly being used in the production of packaging. These types of biopolymers can, to a considerable degree, replace plastic, contributing to the reduction in both production and waste management costs. However, they should be characterised by specific mechanical and surface parameters which determine their application. In the presented work, the PeakForce Quantitative Nanomechanics Mapping (PFQNM) method was applied to analyse a starch-based biopolymer modified with two different kaolin clay contents (5% and 10%). The technique used facilitates the assessment of the correlation of Atomic Force Microscope AFM height parameters with nanomechanical ones which provide the definitions of mutual interactions and allow the possibility to analyse materials in respect of various details. The investigated material was mapped in the Derjaguin–Muller–Toporov (DMT) modulus, adhesion and height domains. The results obtained indicated the impact of additives on the determined parameters. Increases in the DMT modulus and the adhesion force, along with the kaolin content, were observed. The enhancement of starch films with kaolin clay also induced growth in the surface roughness parameters. View Full-Text
Keywords: AFM PeakForce QNM; nanomechanics; biopolymers; starch composite film; adhesion force AFM PeakForce QNM; nanomechanics; biopolymers; starch composite film; adhesion force
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MDPI and ACS Style

Kwaśniewska, A.; Świetlicki, M.; Prószyński, A.; Gładyszewski, G. The Quantitative Nanomechanical Mapping of Starch/Kaolin Film Surfaces by Peak Force AFM. Polymers 2021, 13, 244. https://doi.org/10.3390/polym13020244

AMA Style

Kwaśniewska A, Świetlicki M, Prószyński A, Gładyszewski G. The Quantitative Nanomechanical Mapping of Starch/Kaolin Film Surfaces by Peak Force AFM. Polymers. 2021; 13(2):244. https://doi.org/10.3390/polym13020244

Chicago/Turabian Style

Kwaśniewska, Anita, Michał Świetlicki, Adam Prószyński, and Grzegorz Gładyszewski. 2021. "The Quantitative Nanomechanical Mapping of Starch/Kaolin Film Surfaces by Peak Force AFM" Polymers 13, no. 2: 244. https://doi.org/10.3390/polym13020244

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