Surface modification of banana fibers using organosilanes: an IGC insight
authors Alonso, E; Pothan, LA; Ferreira, A; Cordeiro, N
nationality International
journal CELLULOSE
author keywords Banana fibers; Organosilane coupling agent; Inverse gas chromatography; 3-Aminopropyltriethoxy silane; Glycidoxypropyltrimethoxy silane
keywords INVERSE GAS-CHROMATOGRAPHY; SILANE COUPLING AGENTS; GRAFT-COPOLYMERS; CELLULOSE FIBERS; ADSORPTION; FUNCTIONALIZATION; CONDENSATION; HYDROLYSIS
abstract Banana fibers are an agricultural waste material with a great exploitation potential due to their cellulose-rich content. Raw banana fibers (RBF) were treated with 3-aminopropyltriethoxy silane and glycidoxypropyltrimethoxy silane to improve the inherent limitations of banana fibers, namely its poor cell adhesion. The fibers' modification was evaluated by inverse gas chromatography (IGC). Similar gamma(d)(s) values were observed between the RBF and silane-treated fibers (39-41 mJ/m(2)), which indicates similar reactivity towards apolar probes. However, the decrease in the entropic parameter indicates the silane covalent bonding with the cellulose chains making a stiffer structure. Organosilane grafting was confirmed by an increased basic character in the silane-treated fibers (K-b/K-a from 1.03 to 2.81). The surface morphology also changed towards higher contact area (S-BET increases 6.7 times) and porosity (Dp increases up to 67%). Both morphological and functional group reactivity changes suggest that the organosilane treatment offers new opportunities for these fibers to be used as adsorbents for proteins as well as to cell adhesion. Therefore, IGC proved a simple and viable technique in the characterization of silane-treated fibers.
publisher SPRINGER
issn 0969-0239
isbn 1572-882X
year published 2019
volume 26
issue 6
beginning page 3643
ending page 3654
digital object identifier (doi) 10.1007/s10570-019-02329-9
web of science category Materials Science, Paper & Wood; Materials Science, Textiles; Polymer Science
subject category Materials Science; Polymer Science
unique article identifier WOS:000464849500002
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journal analysis (jcr 2019):
journal impact factor 4.21
5 year journal impact factor 4.512
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