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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.)

ZnO Nanoparticle/Poly(vinyl alcohol) Nanocomposites via Microwave-Assisted Sol-Gel Synthesis for Structural Materials, UV Shielding, and Antimicrobial Activity

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Author(s):
Factori, Irina M. [1] ; Amaral, Julia M. [1] ; Camani, Paulo H. [2] ; Rosa, Derval S. [2] ; Lima, Bruna A. [3] ; Brocchi, Marcelo [3] ; da Silva, Emerson R. [4] ; Souza, Juliana S. [1]
Total Authors: 8
Affiliation:
[1] Fed Univ ABC UFABC, Ctr Nat & Human Sci CCNH, BR-09210580 Sao Paulo - Brazil
[2] Fed Univ ABC UFABC, Ctr Engn Modeling & Appl Social Sci CECS, BR-09210580 Sao Paulo - Brazil
[3] Univ Estadual Campinas, UNICAMP, Trop Dis Lab, Dept Genet Evolut Microbiol & Immunol, BR-13083862 Campinas - Brazil
[4] Fed Univ Sao Paulo UNIFESP, Biophys Dept, BR-04023062 Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: ACS APPLIED NANO MATERIALS; v. 4, n. 7, p. 7371-7383, JUL 23 2021.
Web of Science Citations: 0
Abstract

Polymer nanocomposites based on poly(vinyl alcohol) (PVA) and ZnO hold a privileged position in the development of organic/inorganic hybrid multifunctional materials for applications ranging from food packing to biotechnological platforms. However, a remarkable drawback is that most of the currently available synthetic routes are based on approaches that are both time- and energy-consuming and often lead to heterogeneous polymer films that require compatibilizers to disperse inorganic nanoparticles into the organic matrix. In this work, we present a route for synthesizing ZnO\_PVA nanocomposite films through a sol-gel strategy that uses microwaves as a heat source and PVA as a reactant. We show that nanocomposites produced using this approach exhibit enhanced mechanical properties, UV shielding capabilities, and antimicrobial activity and potentialize their application in the production of antibacterial films against Gram-positive and Gram-negative strains. We show that these properties are easily modulated by controlling the synthesis parameters, such as the irradiation time and power, and the use of PVA excludes the need for compatibilizers since it simultaneously behaves as the polymer matrix and a mediator for in situ synthesis of nanostructured ZnO clusters. The method presented here is straightforward, inexpensive, and applied to other polyols to enhance the functionalities of materials based on these compounds. (AU)

FAPESP's process: 19/16301-6 - Starch aerogels containing modified nanocellullose for removal of heavy metals in wastewater from the industry sector
Grantee:Paulo Henrique Camani
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/11395-7 - Microwave-assisted synthesis of metal oxides semiconductors heterojunctions with photocatalytic applications
Grantee:Juliana dos Santos de Souza Silva
Support Opportunities: Regular Research Grants
FAPESP's process: 18/11277-7 - PBAT films with cellulose nanostructures treated with essential oils encapsulated for active packaging
Grantee:Derval dos Santos Rosa
Support Opportunities: Regular Research Grants