Bio-inspired consolidants derived from crystalline nanocellulose for decayed wood

Basile, Roberta; Bergamonti, Laura; Fernandez, Federica; Graiff, Claudia; Haghighi, Azar; Isca, Clelia; Lottici, Pier Paolo; Pizzo, Benedetto; Predieri, Giovanni

doi:10.1016/j.carbpol.2018.08.132

Cited by 23 publications

(12 citation statements)

References 41 publications

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“…The alkali treatment was performed to remove remnants of lignin and hemicellulose, as evidenced by the decreasing transmittance intensity at 898 cm −1 . A stretching vibration related to C-O was observed at 1033 cm −1 [ 29 ]. The peak at 1047 cm −1 was related to the stretching vibration of the C-O-C from both the hemicellulose and cellulose [ 18 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Physicochemical Properties of Poly(vinyl) Alcohol Nanocomposites Reinforced with Nanocrystalline Cellulose from Tea (Camellia sinensis) Waste

Handoko

Yusuf

2021

Materials

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The purpose of this study was to utilize cellulose from tea waste as nanocrystalline cellulose (NCC), which is used as a filler in poly(vinyl) alcohol (PVA) nanocomposites. To obtain the NCC, a chemical process was conducted in the form of alkali treatment, followed by bleaching and hydrolysis. Nanocomposites were formed by mixing PVA with various NCC suspensions. With chemical treatment, lignin and hemicellulose can be removed from the tea waste to obtain NCC. This can be seen in the functional groups of cellulose and the increase in crystallinity. The NCC had a mean diameter of 6.99 ± 0.50 nm. Furthermore, the addition of NCC to the PVA nanocomposite influenced the properties of the nanocomposites. This can be seen in the general increase in opacity value, thermal and mechanical properties, and crystallinity, as well as the decrease in the value of the swelling ratio after adding NCC. This study has revealed that NCC from tea waste can be used to improve the physicochemical properties of PVA film.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Physicochemical Properties of Poly(vinyl) Alcohol Nanocomposites Reinforced with Nanocrystalline Cellulose from Tea (Camellia sinensis) Waste

Handoko

Yusuf

2021

Materials

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“…Bright dots, reasonably attributable to PEO islands [39], are spotted in all the samples but especially in B1, likely due to the insolubility of PEO in ethanol [40]. Raman analysis was used to qualitatively detect the presence of CNF, whose direct observation in polymer-based nanocomposites is problematic, due to the extremely low dimensions of nanoparticles and microscopy detection limits [41,42]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Processing-structure-property relationships of electrospun PLA-PEO membranes reinforced with enzymatic cellulose nanofibers

et al. 2020

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“…Protein assay dye reagent concentrate was from Bio-Rad. CNC suspension was obtained by acid hydrolysis of cotton linter following the procedure described by Basile et al [29].…”

Section: Methodsmentioning

confidence: 99%

“…Ink formulations for 3D printing were developed following the same preparation principles and critical parameters used for scaffold production in previous research works (e.g., viscosity, polymer concentrations, homogeneity) [29][30][31].…”

Section: Ink Preparation For 3d Printingmentioning

confidence: 99%

“…15 layered scaffolds (15 × 15 mm 2 ) were produced using the developed formulation, ALG and ALG/CNC AgNP-free scaffolds, as control, and cut with circular 6 mm diameter stamps. After that, samples were sterilized in 70% v/v ethanol [29], rinsed and stored in sterile water at 4 • C until use. AgNPs were tested at different concentrations, ranging from 100 ppm to 1 ppm, in order to define the MIC.…”

Section: Antimicrobial Activitymentioning

confidence: 99%

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Three-Dimensional (3D) Printed Silver Nanoparticles/Alginate/Nanocrystalline Cellulose Hydrogels: Study of the Antimicrobial and Cytotoxicity Efficacy

et al. 2020

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Here, a formulation of silver nanoparticles (AgNPs) and two natural polymers such as alginate (ALG) and nanocrystalline cellulose (CNC) was developed for the 3D printing of scaffolds with large surface area, improved mechanical resistance and sustained capabilities to promote antimicrobial and cytotoxic effects. Mechanical resistance, water content, morphological characterization and silver distribution of the scaffolds were provided. As for applications, a comparable antimicrobial potency against S. aureus and P. aeruginosa was demonstrated by in vitro tests as function of the AgNP concentration in the scaffold (Minimal Inhibitory Concentration value: 10 mg/mL). By reusing the 3D system the antimicrobial efficacy was demonstrated over at least three applications. The cytotoxicity effects caused by administration of AgNPs to hepatocellular carcinoma (HepG2) cell culture through ALG and ALG/CNC scaffold were discussed as a function of time and dose. Finally, the liquid chromatography-mass spectrometry (LC-MS) technique was used for targeted analysis of pro-apoptotic initiation and executioner caspases, anti-apoptotic and proliferative proteins and the hepatocyte growth factor, and provided insights about molecular mechanisms involved in cell death induction.

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Bio-inspired consolidants derived from crystalline nanocellulose for decayed wood

Cited by 23 publications

References 41 publications

Synthesis and Physicochemical Properties of Poly(vinyl) Alcohol Nanocomposites Reinforced with Nanocrystalline Cellulose from Tea (Camellia sinensis) Waste

Synthesis and Physicochemical Properties of Poly(vinyl) Alcohol Nanocomposites Reinforced with Nanocrystalline Cellulose from Tea (Camellia sinensis) Waste

Processing-structure-property relationships of electrospun PLA-PEO membranes reinforced with enzymatic cellulose nanofibers

Three-Dimensional (3D) Printed Silver Nanoparticles/Alginate/Nanocrystalline Cellulose Hydrogels: Study of the Antimicrobial and Cytotoxicity Efficacy

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