Impact of cell wall non-cellulosic and cellulosic polymers on the mechanical properties of flax fibre bundles.
Fibre bundles
Flax
Mechanical properties
Polysaccharides
Sequential extraction
Journal
Carbohydrate polymers
ISSN: 1879-1344
Titre abrégé: Carbohydr Polym
Pays: England
ID NLM: 8307156
Informations de publication
Date de publication:
01 Sep 2022
01 Sep 2022
Historique:
received:
26
01
2022
revised:
02
05
2022
accepted:
05
05
2022
entrez:
14
6
2022
pubmed:
15
6
2022
medline:
16
6
2022
Statut:
ppublish
Résumé
Fibre bundles are groups of elementary fibres glued together thanks to the middle lamella, and are the main fraction in plant fibre composites. In this study, relationship between the mechanical properties of flax fibre bundles, chemical composition and cellulose structure were investigated. To do so, a sequential biopolymer extraction was implemented. Fibre bundles were first depectinated by oxalate extraction, and then the hemicelluloses were extracted by LiCl/dimethyl sulfoxide (DMSO) and KOH. The oxalate extract consisted of homogalacturonans and type I rhamnogalacturonans, while the LiCl extract was composed mainly of glucomannans and the KOH extract of xyloglucans. The KOH stage resulted in the appearance of cellulose II in flax bundles. The extraction of pectin and hemicelluloses led to the disappearance of the middle lamella concomitant with a decrease in the tensile Young's modulus and maximum strength. Finally, the fibre bundle composition, ultrastructure and mechanical properties are discussed together in view of the thin middle lamella.
Identifiants
pubmed: 35698346
pii: S0144-8617(22)00504-5
doi: 10.1016/j.carbpol.2022.119599
pii:
doi:
Substances chimiques
Oxalates
0
Polymers
0
Cellulose
9004-34-6
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
119599Informations de copyright
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