While green bioplastic based on carbohydrate polymers have showed considerable promise, the methods typically used to prepare them in a single material have remained a significant challenge. In this study, a simple approach is proposed to fabricate high performance cellulose films composed of chemically and physically dual-crosslinked 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers (DC TEMPO-CNFs). The hydroxyl groups of TEMPO-CNF suspensions were firstly crosslinked chemically with epichlorohydrin (ECH), and subsequently TEMPO-CNF matrices were crosslinked physically via the strong electrostatic interaction between carboxylate and Ca ions. It was found that the optimized DC TEMPO-CNF films exhibit a good transmittance (90 %) and a high tensile strength (303 MPa). Furthermore, these DC TEMPO-CNF films revealed superior thermal stability and excellent water resistance compared to neat TEMPO-CNF films without crosslinked domains. We believe that these results will pave the way to preparing practical polysaccharide bioplastics with simple, environmentally-friendly manufacturing processes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.carbpol.2021.117817 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Oxidized cellulose nanofibers from sugarcane bagasse obtained by microfluidization: Morphology and rheological behavior.
Carbohydr Polym
March 2023
Federal University of Sao Carlos, Graduate Program in Materials Science and Engineering, Rodovia Washington Luiz, Km 235, 13.565-905 São Carlos, SP, Brazil; Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970 Campinas, SP, Brazil; Federal University of Sao Carlos, Department of Chemistry, São Carlos, SP, Brazil. Electronic address:
It is advantageous to understand the relationship between cellulose fiber morphology and the rheological behavior of its dispersions so that their application can be optimized. The goal of this study was to produce sugarcane bagasse-sourced cellulose dispersions with different numbers of high-pressure homogenization cycles. Microfluidization produced cellulose nanofibers (between 5 and 80 nm in diameter) with similar surface charge densities and crystallinities (measured on the resulting films).
View Article and Find Full Text PDFNanocellulose-enhanced smart film for the accurate monitoring of shrimp freshness via anthocyanin-induced color changes.
Carbohydr Polym
February 2023
College of Food Science and Technology, Hebei Agricultural University, Baoding 071000, PR China. Electronic address:
Smart films allow consumers to visually determine food freshness. We aimed to improve the surface contact area of gas permeation in anthocyanin (AH)-induced smart films by introducing nanocellulose (NC) prepared by sulfuric acid (CNSA), citric acid (CNCA), and TEMPO (CNF) to improve their sensitivity. The film matrix was composed of PVA.
View Article and Find Full Text PDFDouble-crosslinked cellulose nanofiber based bioplastic films for practical applications.
Carbohydr Polym
May 2021
Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea. Electronic address:
While green bioplastic based on carbohydrate polymers have showed considerable promise, the methods typically used to prepare them in a single material have remained a significant challenge. In this study, a simple approach is proposed to fabricate high performance cellulose films composed of chemically and physically dual-crosslinked 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers (DC TEMPO-CNFs). The hydroxyl groups of TEMPO-CNF suspensions were firstly crosslinked chemically with epichlorohydrin (ECH), and subsequently TEMPO-CNF matrices were crosslinked physically via the strong electrostatic interaction between carboxylate and Ca ions.
View Article and Find Full Text PDFCellulose nanocrystal-coated TEMPO-oxidized cellulose nanofiber films for high performance all-cellulose nanocomposites.
J Hazard Mater
November 2020
Department of Plant & Environmental New Resources, Graduate School of Biotechnology, Institute of Life Sciences and Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 446-701, South Korea. Electronic address:
High performance biopolymer films are of great interest as effective alternatives to non-biodegradable and petroleum-based polymer films. However, most natural biopolymer films possess weak mechanical and poor gas barrier properties, limiting their applicability. In this work, we developed all-cellulose nanocomposite films through a simple vacuum filtration process, using cellulose nanocrystals (CNCs) and 2,2,6,6-tetramethylpiperidine-1-oxy-oxidized cellulose nanofibers (TEMPO-CNFs).
View Article and Find Full Text PDFLuminescent films functionalized with cellulose nanofibrils/CdTe quantum dots for anti-counterfeiting applications.
Carbohydr Polym
January 2019
Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China. Electronic address:
A facile and robust strategy is required to fabricate films with highly photoluminescent for application in the field of anti-counterfeit marking. Here we report a kind of multifunctional bio-nanocomposite film with CdTe quantum dots (QDs) decorated with cellulose nanofibrils (CNFs). In this work, CNFs were introduced as nanothin film matrix, and crosslinking modification with EDC/NHS through covalent binding was used to introduce the CdTe QDs to prepare the nanoscale TEMPO-CNF/CdTe QDs nanocomposite material with uniform distribution, controllable particle size and good photoelectric properties.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!