Language:

Electrochemical Insights on the Hydrophobicity of Cellulose Substrates Imparted by Enzymatically Oxidized Gallates with Increasing Alkyl Chain Length

ACS applied materials & interfaces, 2015-07, Vol.7 (25), p.13834 [Peer Reviewed Journal]

info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 1944-8244 ;EISSN: 1944-8252 ;DOI: 10.1021/acsami.5b01904 ;PMID: 26057550

Digital Resources/Online E-Resources

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Electrochemical Insights on the Hydrophobicity of Cellulose Substrates Imparted by Enzymatically Oxidized Gallates with Increasing Alkyl Chain Length
Author: Cusola, Oriol ; Valls, Cristina ; Vidal, Teresa ; Tzanov, Tzanko ; Roncero, M Blanca
Subjects: Alkyl gallates ; Cellulose ; Cellulose - chemistry ; Cel·lulosa ; Cyclic voltammetry ; Electrochemical Techniques ; Electrodes ; Enginyeria paperera ; Gallates ; Gallic Acid - analogs & derivatives ; Gallic Acid - chemistry ; Gallic Acid - metabolism ; Hydrophobic and Hydrophilic Interactions ; Hydrophobicity ; Laccase ; Laccase - metabolism ; Oxidation-Reduction ; Primeres matèries papereres ; Àrees temàtiques de la UPC
Is Part Of: ACS applied materials & interfaces, 2015-07, Vol.7 (25), p.13834
Description: In this work, we studied the influence of the alkyl chain length in enzymatically oxidized gallates on the development of hydrophobicity on paper-based materials, and further correlated the obtained effect to the redox mechanism of the enzymatic treatment. Laccase (Lac) enzyme was used to oxidize various members of the gallate homologous series in the presence or not of lignosulfonates (SL) to produce several functionalization solutions (FS), which were subsequently applied to cellulosic substrates. The hydrophobicity of the substrates was then assessed by means of water drop test (WDT) and contact angle (WCA) measurements. Hydrophobicity peaked reaching WDT and WCA values around 5000 s and 130°, respectively, and then decreased with increasing length of the hydrocarbon chain of gallate. Cyclic voltrammetry (CV) was used to study the effect of SL on the redox reactions of several gallates. The intensity of the anodic peak in their voltammograms decreased increasing the chain length of the gallate. The electrochemical behavior of lauryl gallate (LG) differed from that of other gallates. The fact that the voltammetric curves for SL and LG intersected at a potential of 478 mV indicates an enhancing effect of SL on LG oxidation at high potentials (above 478 mV).
Publisher: United States
Language: English
Identifier: ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.5b01904
PMID: 26057550
Source: Recercat

Back to results list


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Electrochemical Insights on the Hydrophobicity of Cellulose Substrates Imparted by Enzymatically Oxidized Gallates with Increasing Alkyl Chain Length

info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 1944-8244 ;EISSN: 1944-8252 ;DOI: 10.1021/acsami.5b01904 ;PMID: 26057550

Searching Remote Databases, Please Wait