DataVXACS Applied Polymer MaterialsPaper
journal article·2021-05-14Open access

Cross-Linked and Surface-Modified Cellulose Acetate as a Cover Layer for Paper-Based Electrochromic Devices

Joice Jaqueline Kaschuk, Maryam Borghei, Katariina Solin, Anurodh Tripathi, Alexey Khakalo, Fábio A. S. Leite, Aida Branco, Miriam C. Amores de Sousa, Elisabete Frollini, Orlando J. Rojas

ACS Applied Polymer Materials· Volume 3· Issue 5
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Source abstract

Abstract

We studied the surface and microstructure of cellulose acetate (CA) films to tailor their barrier and mechanical properties for application in electrochromic devices (ECDs). Cross-linking of CA was carried out with pyromellitic dianhydride to enhance the properties relative to unmodified CA: solvent resistance (by 43% in acetone and 37% in DMSO), strength (by 91% for tensile at break), and barrier (by 65% to oxygen and 92% to water vapor). Surface modification via tetraethyl orthosilicate and octyltrichlorosilane endowed the films with hydrophobicity, stiffness, and further enhanced solvent resistance. A detailed comparison of structural, chemical, surface, and thermal properties was performed by using X-ray diffraction, dynamic mechanical analyses, Fourier-transform infrared spectroscopy, and atomic force microscopy. Coplanar ECDs were synthesized by incorporating a hydrogel electrolyte comprising TEMPO-oxidized cellulose nanofibrils and an ionic liquid. When applied as the top layer in the ECDs, cross-linked and hydrophobized CA films extended the functionality of the assembled displays. The results indicate excellent prospects for CA films in achieving environmental-friendly ECDs that can replace poly(ethylene terephthalate)-based counterparts.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storagePolymersNanomaterials

OpenAlex topics: Transition Metal Oxide Nanomaterials · Advanced Cellulose Research Studies · Advanced Sensor and Energy Harvesting Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Macromolecular Materials and Lignocellulosic Fibers Group, Center for Research on Science and Technology of BioResources, Institute of Chemistry of São Carlos, University of São Paulo, CP 780, 13560-970 São Carlos, São Paulo, Brazil

Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, FI-00076 Espoo, Finland

Department of Chemical and Biomolecular Engineering, North Carolina State University, 27695 Raleigh, North Carolina, United States

VTT Technical Research Centre of Finland Ltd, P.O. Box 1000, FI-02044, VTT Espoo, Finland

Ynvisible GmbH, Engesserstr. 4A 79108 Freiburg, Germany

Ynvisible SA, Rua Quinta do Bom Retiro 12C, 2820-690 Charneca da Caparica, Portugal

Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, BC V6T 1Z3 Vancouver, Canada

Funding

Academy of Finland?s Flagship Programme - Competence Center for Materials Bioeconomy, FinnCERES · National Counsel of Technological and Scientific Development, Brazil (CNPq) · European Union?s Horizon 2020 research and innovation program · S?o Paulo Research Foundation ? FAPESP

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