Article
Chemistry, Multidisciplinary
David Joram Mendoza, Christine Browne, Vikram Singh Raghuwanshi, Louis M. M. Mouterde, George P. Simon, Florent Allais, Gil Garnier
Summary: This study demonstrates the successful incorporation of novel UV-absorbing phenolic esters onto cellulose nanocrystals and their application in polyvinyl alcohol films, resulting in transparent films with excellent photostability and UV-absorbing properties. The modified CNC-DEF significantly improves mechanical, oxygen barrier, and optical properties of the films, making them potential candidates for industrial and packaging applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Ziyang Chen, Zikang Li, Ping Lan, Hui Xu, Ning Lin
Summary: Inspired by ancient Chinese philosophy, we combined rigid cellulose nanocrystals (CNC) with elastic rubbers to create CNC/rubber composite aerogels, which exhibit low density, high porosity, improved mechanical performance, and hydrophobicity.
CARBOHYDRATE POLYMERS
(2022)
Article
Agricultural Engineering
Manni Ren, Olugbenga Abiola Fakayode, Fangong Kong, Cunshan Zhou, Li Chen, Xingyu Fan, Jiakang Liang, Haoxin Li
Summary: Cellulose nanocrystals (CNCs) were isolated from sugarcane pith and their morphology and properties were studied after bleaching. A hydrophobic nanocellulose-based aerogel was fabricated and used as an oil absorbent in food systems. The results showed that the bleached CNCs retained their good characteristics and the aerogels exhibited high porosity, lipophilicity, and reusability.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Matthieu M. Mention, Cedric Peyrot, Blandine Godon, Jimmy Alarcan, Fanny Brunissen, Marina Grimaldi, Patrick Balaguer, Albert Braeuning, Florent Allais
Summary: With the increasing demand for safe and natural products and the ban on harmful molecules, there is a need for safe bio-based alternatives to replace current petroleum-based UV filters. Bio-based molecules developed from furfural and 5-hydroxymethylfurfural show promising UV-B filtering properties, photostability, and antimicrobial activity. In silico and in vitro assays demonstrate that these molecules do not have endocrine disruption activity.
GREEN CHEMISTRY LETTERS AND REVIEWS
(2023)
Article
Materials Science, Paper & Wood
Saul Llacer Navarro, Koyuru Nakayama, Alexander Idstrom, Lars Evenas, Anna Strom, Tiina Nypelo
Summary: The influence of sulfate half-ester group on the oxidation of cellulose nanocrystals (CNCs) was studied, revealing its role in regulating oxidation kinetics and properties of resulting materials. The presence of sulfate half-ester group decreases oxidation rate, but decreases in content as oxidation degree reaches approximately 50%. Furthermore, the surfaces of CNCs are affected by oxidation beyond C2-C3 bond cleavage, underscoring the importance of understanding kinetics for optimizing CNC oxidation.
Article
Chemistry, Applied
Huan Liang, Dongmei Yin, Lina Shi, Yihuan Liu, Xin Hu, Ning Zhu, Kai Guo
Summary: Functionalized cellulose has gained research interests for its potential in highly functional and environmentally friendly materials. Surface modification of cellulose via photo-induced click reaction integrates the advantages of photochemistry, click reaction, and surface modification. In this review, recent progress in cellulose surface modification using photo-induced click reactions is summarized. Different click reactions, such as thiol-X and cycloaddition reactions, are compared and their applications in cellulose modification are discussed. The challenges and outlook of photo-induced click reaction in cellulose surface modification are also addressed.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Applied
Abdellah Halloub, Marya Raji, Hamid Essabir, Hind Chakchak, Ratiba Boussen, Mohammed-ouadi Bensalah, Rachid Bouhfid, Abou el Kacem Qaiss
Summary: UV-protection films based on renewable materials extracted from the Argania nutshell were produced and studied in this paper. The films were made from modified lignin and cellulose nanocrystals, and showed excellent UV-absorption properties and suitability for food packaging.
CARBOHYDRATE POLYMERS
(2022)
Article
Agricultural Engineering
Jamileh Shojaeiarani, Dilpreet S. Bajwa, Cecily Ryan, Seth Kane
Summary: This study compares the effects of different nanofillers on PLA nanocomposites, and finds that PLA nanocomposites containing lignin-coated cellulose nanocrystals (LCNC) can achieve good UV protection and biodegradability while maintaining mechanical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Materials Science, Multidisciplinary
Yizhuo Xu, Dingyuan Zheng, Xiaojian Chen, Wenrui Yao, Yuning Wang, Zihao Zheng, Haiyan Tan, Yanhua Zhang
Summary: Mussel-inspired polydopamine decorated cellulose nanocrystals were used as nanofillers to improve the compatibility and mechanical properties of polylactic acid. The introduction of polydopamine enhanced the interfacial adhesion between the nanocrystals and polylactic acid, resulting in improved tensile strength and elongation at break. The polydopamine also provided UV-shielding properties, making it suitable for light-sensitive packaging applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Paper & Wood
Shuo Wang, Xu Chen, Ze Li, Weiwei Zeng, Dekai Meng, Yonggui Wang, Zefang Xiao, Haigang Wang, Daxin Liang, Yanjun Xie
Summary: In this study, cellulose-based hydrogels were prepared and analyzed for their ability to remove dye pollutants from wastewaters. The hydrogels, CM-MA and CM-CH, exhibited selective adsorption of cationic and anionic dyes, respectively. The isotherms, adsorption kinetics, and adsorption capacity of the hydrogels were investigated, and Langmuir isotherm and pseudo-second-order kinetic models were found to adequately characterize the data. These cellulose-based hydrogels provide an efficient and straightforward method for the removal of dyes from wastewater.
Article
Biochemistry & Molecular Biology
Christina Wappl, Viktor Schallert, Christian Slugovc, Astrid-Caroline Knall, Stefan Spirk
Summary: A facile method for the synthesis of a norbornylated cellulosic material (NC) with a high degree of substitution (2.9) is presented, utilizing direct reaction of trimethylsilyl cellulose with norbornene acid chloride. The resulting NC is highly soluble in organic solvents and its reactive double bonds can be utilized for the copper-free inverse-electron demand Diels-Alder (iEDDA) click reaction with 3,6-di(pyridin-2-yl)-1,2,4,5-tetrazine. This reaction kinetics are similar to the Huisgen type 1,3-dipolar cycloaddition of azide with alkynes, but without the use of toxic catalysts.
Article
Materials Science, Multidisciplinary
Hairul Abral, Muhammad Ikhsan, Dieter Rahmadiawan, Dian Handayani, Neny Sandrawati, Eni Sugiarti, Ahmad Novi Muslimin
Summary: This study found that the addition of Uncaria gambir extract to polyvinyl alcohol (PVA) can improve its properties such as UV-light protection, antibacterial, tensile strength, and thermal resistance. Adding 1% Uncaria gambir resulted in significant improvements in these properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Applied
Hippolyte Durand, Isabelle Baussanne, Martine Demeunynck, Jasmine Viger-Gravel, Lyndon Emsley, Michel Bardet, Elisa Zeno, Naceur Belgacem, Julien Bras
Summary: This study presents an ester-containing prodrug of metronidazole covalently bound to cellulose nanofibrils in aqueous suspension using a two-step immobilization procedure based on green chemistry principles. The presence of the drug is confirmed by various characterization methods, and the ester function of the immobilized prodrug allows controlled drug release through specific enzyme activity.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Israr Ali, Muhammad Gulfam, Sung-Han Jo, Jeong-Woo Seo, Ali Rizwan, Sang-Hyug Park, Kwon Taek Lim
Summary: In this study, novel biocompatible and reduction-responsive soft hydrogels were prepared using a specific cross-linker and a responsive reaction, resulting in highly porous structures and soft mechanical properties. The hydrogels exhibited high swelling ratios, tunable gelation times, and excellent drug loading efficiencies. The results indicate potential applications of these hydrogels in drug delivery systems.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Biochemistry & Molecular Biology
Hugo Voisin, Estelle Bonnin, Melanie Marquis, Camille Alvarado, Suzanne Lafon, Teresa Lopez-Leon, Frederic Jamme, Isabelle Capron
Summary: This study utilized cellulose nanocrystals (CNCs) to establish a model system for studying proteins in microdroplets created by a microfluidic setup. The proteins, bovine serum albumin (BSA) and a GH7 endoglucanase, relevant to food and plant science, were investigated. The results showed that BSA disturbed the overall structure of the droplets, while GH7 interacted with the CNCs without disrupting the system organization. These findings pave the way for the development of more complex polysaccharide-protein in-vitro models.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Christine Browne, Michael J. Hertaeg, David Joram Mendoza, Mahdi Naseri, Maoqi Lin, Gil Garnier, Warren Batchelor
Summary: Researchers have developed a new type of micropatterned cellulose nanocrystal (CNC) free-standing films that can control the surface hydrophobicity by manipulating the dimensions of the channels. Sharp channels with dimensions of 5 mu m x 6 mu m were achieved using a 2.2 wt% suspension with a CNC:CMC ratio of 10:1, which is the smallest patterned channel size reported so far. By varying the channel dimensions, the water droplet contact angle can be adjusted to resist or promote wetting, without altering the surface chemistry.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Maoqi Lin, Vikram Singh Raghuwanshi, Christine Browne, George P. Simon, Gil Garnier
Summary: The optical properties and humidity response of iridescent films made of CNC and PEG can be customized through the incorporation of specific electrolytes. The choice of anions has a significant effect on the color and color range of the films, while the effect of cations is negligible. Anions with the same valency result in a red-shift color in the dried state. Salting-in type anions exhibit a greater color changing range during RH changes compared to salting-out type anions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Vikram Singh Raghuwanshi, Christine Browne, Warren Batchelor, Gil Garnier
Summary: The self-assembly (SA) of cellulose nanocrystals (CNC) in suspensions is investigated, and it is found that CNC rods of different lengths exhibit different self-assembly behavior. Short rods form an isotropic phase at lower concentrations and become aligned in a nematic phase as the concentration increases. The interrod distance follows different power law slopes at different concentrations. In contrast, long rods remain in the isotropic phase throughout the concentration range. The SA and ordering of rods are influenced by the balance between attractive and repulsive forces. This understanding enables the engineering of CNC composites with unique optical properties for applications in sensors and bio-diagnostics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
Pallabi Sinha Roy, Matthieu M. Mention, Antonio F. Patti, Gil Garnier, Florent Allais, Kei Saito
Summary: A novel and highly tunable reversible polymer adhesive was designed using lignin, the second most abundant polymer. The adhesive exhibits reversible adhesion switching through the photo-responsive property of the p-hydroxycinnamic acid structure. The design strategy and structure-property analysis mechanisms described in this work can be applied to engineer new bio-based and reusable adhesives.
Article
Food Science & Technology
Morad Chadni, Nadia Boussetta, Cedric Guerin, Fabien Lagalle, Aya Zoghlami, Patrick Perre, Florent Allais, Nabil Grimi, Irina Ioannou
Summary: This study investigated the extraction of sinapine from mustard seed meal using three methods: supercritical CO2 pretreatment, high-voltage electrical discharges (HVEDs), and ultrasound. Supercritical CO2 pretreatment resulted in a 24.4% increase in sinapine yield, while the combination of ultrasound and SC-CO2 pretreatment further increased the yield by 32%. However, the application of HVEDs led to sinapine degradation, making it unsuitable for extraction.
Article
Materials Science, Paper & Wood
Humayun Nadeem, Mostafa Dehghani, Simin Miri, Mahdieh Pazirofteh, Gil Garnier, Warren Batchelor
Summary: This study aims to produce hydrophobic nanocellulose/caboxymethyl cellulose films with good barrier properties. The deposition of alkyl ketene dimer (AKD) on the dried films improved their hydrophobicity and flexibility while maintaining the barrier performance. The partially dried spray deposited AKD-NC/CMC films showed higher hydrophobicity and lower mass loss percentage after immersion in water.
Article
Materials Science, Paper & Wood
Hans Estrella Cainglet, Joanne Tanner, Naghmeh Nasiri, Christine Browne, Gil Garnier, Warren Batchelor
Summary: A new rheological method is described for determining the aspect ratio of cellulose fibres, which is faster and more widely applicable than microscopic methods. It is demonstrated that this method can be used for the production of nanocellulose at industrial scale.
Article
Environmental Sciences
Humayun Nadeem, Mahdi Naseri, Mostafa Dehghani, Mahdieh Pazirofteh, Vikram Raghuwanshi, Gil Garnier, Warren Batchelor
Summary: Synthetic packaging materials have excellent performance, but their waste after use poses serious concerns to the environment and consumer health. Cellulose nanofibril (CNF) films are emerging as sustainable packaging, but their high energy consumption and reduced properties after recycling are issues. This study evaluates the recycling characteristics of spray deposited CNF films and shows that CNF films recycled at 300 x 10(3) revolutions have similar barrier performance to non-recycled films, but mechanical performance and transmittance slightly decrease after the 2nd recycling.
WASTE AND BIOMASS VALORIZATION
(2023)
Review
Chemistry, Applied
Dilini Perera, Lavaraj Devkota, Gil Garnier, Joe Panozzo, Sushil Dhital
Summary: Future demand for dietary protein will shift towards plant-based sources rather than animal-based products, with legumes and pulses playing a crucial role due to their rich plant protein content and health benefits. However, the consumption of legumes is hindered by their hard-to-cook (HTC) phenomenon, which refers to their resistance to softening during cooking. This review provides detailed insights into the development of HTC in legumes, focusing on common beans, including their nutrition, health benefits, hydration behavior, and potential strategies for improvement.
Article
Chemistry, Physical
Christine Browne, Vikram Singh Raghuwanshi, Gil Garnier, Warren Batchelor
Summary: This study finds that the optical properties of cellulose nanocrystal films are significantly affected by the type, valency and concentration of electrolytes. The addition of electrolytes increases the pitch of the chiral nematic structures, but further concentration leads to aggregation and breakdown of the structures. Univalent species have a stronger influence on the structures compared to divalent species. This research demonstrates the importance of ion valency, concentration and species in controlling the chiral nematic structures of cellulose nanocrystal suspensions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Analytical
Thulya Chakkumpulakkal Puthan Veettil, Diana Alves, Jitraporn Vongsvivut, Rosemary L. Sparrow, Bayden R. Wood, Gil Garnier
Summary: Oxidative treatment of RBCs prior to freeze-drying stabilizes the cells for storage at room temperature. Synchrotron-based FTIR microspectroscopy was used to analyze single RBCs and compare lipid and protein spectral data before and after oxidation and freeze-drying. The analysis showed that oxidized and freeze-dried RBCs have different spectral profiles compared to untreated RBCs, indicating changes in lipid peroxidation, stiffness of the membrane, and protein secondary structure. Freeze-drying did not introduce additional changes. This study highlights the potential of freeze-dried RBCs as a stable source for blood serology testing and demonstrates the power of synchrotron FTIR microspectroscopic live-cell analysis.
