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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A simple process to tune wettability of pectin-modified silanized glass

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Author(s):
Nascimento, Jonatas U. [1] ; Zambuzi, Giovana C. [1] ; Ferreira, Joao O. [1] ; Paula, Julia H. [1] ; Ribeiro, Tatiana S. [1] ; Souza, Adriano L. [1] ; Dreiss, Cecile A. [2] ; Silva, Lucimara L. [3] ; Francisco, Kelly R. [1]
Total Authors: 9
Affiliation:
[1] Fed Univ Sao Carlos UFSCar, Dept Nat Sci Math & Educ, Rodovia Anhanguera Km 174, BR-13604900 Araras, SP - Brazil
[2] Kings Coll London, Inst Pharmaceut Sci, Franklin Wilkins Bldg, 150 Stamford St, London SE1 9NH - England
[3] Fed Technol Univ Parana UTFPR, Chem Engn Course, Estr Pioneiros 3131, BR-86036370 Londrina, PR - Brazil
Total Affiliations: 3
Document type: Journal article
Source: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS; v. 577, p. 67-74, SEP 20 2019.
Web of Science Citations: 0
Abstract

Layer-by-layer (LbL) techniques are strategically important to obtain highly organized and oriented materials. Understanding film formation and nanoscale structures at the interface is important for many biological, industrial and technological processes. We describe a LbL film formed from a silanized glass surface coated with high-methoxyl pectin. The chemical composition of the surfaces was characterized by X-ray photoelectron spectroscopy (XPS); surface topology and chemistry were analyzed by Atomic Force Microscopy coupled with Infrared Spectroscopy (AFM-IR). Varying pH and concentration of the casting pectin solutions results in surfaces with different wettability, measured by contact angle. At high pH, pectin chains are highly charged, resulting in chain repulsions, poor coverage and low wettability due to exposure of the silane chains. At higher concentration, chains extend from the surface and wettability increases. This work establishes a facile route towards value-added materials from pectin, establishing clear links between wettability, nanostructure and composition at the interface. (AU)

FAPESP's process: 17/20006-4 - Obtaining pectin nanofibers applied to the modify release of hydroxychloroquine
Grantee:Kelly Roberta Francisco Muruci de Paula
Support Opportunities: Regular Research Grants
FAPESP's process: 18/12146-3 - Modified release mechanisms study of hydroxychloroquine mobilized in pectin
Grantee:Giovana Cristina Zambuzi
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 15/24136-4 - Reactivity of hybrid films containing polyoxometalates toward pesticides
Grantee:Adriano Lopes de Souza
Support Opportunities: Regular Research Grants
FAPESP's process: 16/21616-8 - Investigation of reactivity toward pesticides of silicotungstic acid films in hybrid matrixes
Grantee:Julia Helena de Paula
Support Opportunities: Scholarships in Brazil - Scientific Initiation