Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Chitin Nanocrystals Deacetylation on a Nature-Mimicking Interface in Carbon Fiber Composites

A. M. Abdel-Mohsen
ORCID logo ,
R. M. Abdel-Rahman
,
L. Kalina
ORCID logo ,
V Vishakha
,
Ludmila Kaprálková
,
Pavel Nemecek
,
Josef Jancar
,
Ivan Kelnar
* ORCID logo
Version 1 : Received: 1 February 2024 / Approved: 2 February 2024 / Online: 2 February 2024 (04:53:57 CET)

A peer-reviewed article of this Preprint also exists.

Abdel-Mohsen, A.M.; Abdel-Rahman, R.M.; Kalina, L.; Vishakha, V.; Kaprálková, L.; Němeček, P.; Jančář, J.; Kelnar, I. Effect of Chitin Nanocrystal Deacetylation on a Nature-Mimicking Interface in Carbon Fiber Composites. J. Compos. Sci. 2024, 8, 163. Abdel-Mohsen, A.M.; Abdel-Rahman, R.M.; Kalina, L.; Vishakha, V.; Kaprálková, L.; Němeček, P.; Jančář, J.; Kelnar, I. Effect of Chitin Nanocrystal Deacetylation on a Nature-Mimicking Interface in Carbon Fiber Composites. J. Compos. Sci. 2024, 8, 163.

Abstract

The formation of a rigid tough interface based on a nacre-like structure in carbon fiber (CF) composites is a promising way to eliminate low delamination resistance. An effective method of coating CFs is electrophoretic deposition (EPD), which, in the case of dissimilar components like graphene oxide (GO) and polymeric glue, usually requires their chemical bonding/ strong interactions. In this work, we focus on chitin nanocrystals (ChNCs), leading to an excellent mechanical performance of artificial nacre, where favorable interactions and bonding with GO were controlled by degrees of deacetylation (5, 15 and 30 %). We have prepared coatings based on GO/ChNCs adducts with 95/5, 90/10,50/50 and 25/75 ratios using optimized EPD conditions (pH, concentration, voltage and time). The prepared materials were characterized using FTIR, TEM, XPS, SEM, DLS, and XRD. SEM evaluation indicates the formation of a homogeneous interlayer, which possesses a fair ability of chemical bonding with the epoxy matrix. Short beam testing of epoxy matrix composites indicates that coating does not decrease stiffness and its relatively low dependence on composition. Therefore, all coatings are promising for a detailed study of delamination resistance using laminate samples. Moreover, facile EPD from water solution/ suspension has a fair potential for industrial applications.

Keywords

graphene oxide; chitin nanocrystals; delamination resistance; tough interface; electrophoresis; carbon fiber composite

Subject

Chemistry and Materials Science, Materials Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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