Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties
A facile and sustainable synthesis of unique flax fiber composites (FFCs) is reported, where raw flax fiber (FFR) was immobilized with variable chitosan content. FFCs were structurally characterized via TGA, XRD, SEM analysis, and spectroscopy (IR, NMR, and Raman mapping). Physicochemical characteri...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Carbohydrate Polymer Technologies and Applications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666893923001184 |
| _version_ | 1827577201433772032 |
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| author | Mariam Mir Lee D. Wilson |
| author_facet | Mariam Mir Lee D. Wilson |
| author_sort | Mariam Mir |
| collection | DOAJ |
| description | A facile and sustainable synthesis of unique flax fiber composites (FFCs) is reported, where raw flax fiber (FFR) was immobilized with variable chitosan content. FFCs were structurally characterized via TGA, XRD, SEM analysis, and spectroscopy (IR, NMR, and Raman mapping). Physicochemical characterization of FFCs enabled estimation of the point-of-zero-charge (PZC), solvent swelling at variable pH. Dye adsorption with Rose Bengal (RB) and Methylene Blue (MB) afforded characterization of the surface chemistry of the materials. This contribution study is a first reported example that highlights the unique structure-property relationships of FFC materials and the role of electrostatic interactions between the pristine fiber substrate and chitosan. FFCs with incremental chitosan content display the following trends: (i) greater solvent swelling at variable pH (350 % for FFCs and ca. 100 % for FFR and commercial absorbents), (ii) two-fold enhanced adsorption of RB (FFC 0.5 to FFC 2.0) and (iii) 1.5-fold decreased adsorption of MB (FFC 2.0 to FFC 0.5). The unique “switchable” sorption properties of the FFCs toward solvent and dyes was revealed upon facile and noncovalent immobilization of chitosan onto FFR. The sustainable composites reported herein offer a potential adsorption-based technology suitable for filter-based applications in “smart textiles” to biomedical sorbents for wound healing. |
| first_indexed | 2024-03-08T21:24:27Z |
| format | Article |
| id | doaj.art-a25f2ca0473f4f569280a7936c0dd68c |
| institution | Directory Open Access Journal |
| issn | 2666-8939 |
| language | English |
| last_indexed | 2024-03-08T21:24:27Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbohydrate Polymer Technologies and Applications |
| spelling | doaj.art-a25f2ca0473f4f569280a7936c0dd68c2023-12-21T07:37:50ZengElsevierCarbohydrate Polymer Technologies and Applications2666-89392023-12-016100397Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical propertiesMariam Mir0Lee D. Wilson1Department of Chemistry, University of Saskatchewan, 110 Science Place, Thorvaldson Building, Saskatoon, SK S7N 5C9, CanadaCorresponding author.; Department of Chemistry, University of Saskatchewan, 110 Science Place, Thorvaldson Building, Saskatoon, SK S7N 5C9, CanadaA facile and sustainable synthesis of unique flax fiber composites (FFCs) is reported, where raw flax fiber (FFR) was immobilized with variable chitosan content. FFCs were structurally characterized via TGA, XRD, SEM analysis, and spectroscopy (IR, NMR, and Raman mapping). Physicochemical characterization of FFCs enabled estimation of the point-of-zero-charge (PZC), solvent swelling at variable pH. Dye adsorption with Rose Bengal (RB) and Methylene Blue (MB) afforded characterization of the surface chemistry of the materials. This contribution study is a first reported example that highlights the unique structure-property relationships of FFC materials and the role of electrostatic interactions between the pristine fiber substrate and chitosan. FFCs with incremental chitosan content display the following trends: (i) greater solvent swelling at variable pH (350 % for FFCs and ca. 100 % for FFR and commercial absorbents), (ii) two-fold enhanced adsorption of RB (FFC 0.5 to FFC 2.0) and (iii) 1.5-fold decreased adsorption of MB (FFC 2.0 to FFC 0.5). The unique “switchable” sorption properties of the FFCs toward solvent and dyes was revealed upon facile and noncovalent immobilization of chitosan onto FFR. The sustainable composites reported herein offer a potential adsorption-based technology suitable for filter-based applications in “smart textiles” to biomedical sorbents for wound healing.http://www.sciencedirect.com/science/article/pii/S2666893923001184Flax fiberBiocompositeDye adsorptionHydrationChitosanDual mode binding |
| spellingShingle | Mariam Mir Lee D. Wilson Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties Carbohydrate Polymer Technologies and Applications Flax fiber Biocomposite Dye adsorption Hydration Chitosan Dual mode binding |
| title | Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties |
| title_full | Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties |
| title_fullStr | Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties |
| title_full_unstemmed | Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties |
| title_short | Flax fiber-chitosan biocomposites with tailored structure and switchable physicochemical properties |
| title_sort | flax fiber chitosan biocomposites with tailored structure and switchable physicochemical properties |
| topic | Flax fiber Biocomposite Dye adsorption Hydration Chitosan Dual mode binding |
| url | http://www.sciencedirect.com/science/article/pii/S2666893923001184 |
| work_keys_str_mv | AT mariammir flaxfiberchitosanbiocompositeswithtailoredstructureandswitchablephysicochemicalproperties AT leedwilson flaxfiberchitosanbiocompositeswithtailoredstructureandswitchablephysicochemicalproperties |