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Peng L, Fang Z, Lin X, Li G, Chen K, Qiu X. The Critical Role of Ca 2+ in Improving the Transparency and Strength of High-Filler-Content Nanocellulose/Montmorillonite Nanocomposite Films. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38981092 DOI: 10.1021/acsami.4c05970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Strong and transparent nanocellulose/montmorillonite (MMT) nanocomposite films with high filler content (≥50 wt %) are emerging as versatile materials for advanced applications due to their excellent optical, barrier, mechanical, and thermal properties, and environmental friendliness. Nonetheless, these films undergo a notable decline in optical and mechanical properties at high MMT loadings. This study first demonstrates that calcium-ion-induced tactoids are the key factor causing disordered structures in nanocomposite films, leading to the degradation of optical and mechanical properties. We then address this issue by employing a Ca2+ removal strategy─dialysis. Through removing 43% of free Ca2+, simultaneous improvements in both properties are observed. For example, in a nanocomposite film with 70 wt % MMT, light transmittance increases from 75.9 to 91.6%, and the tensile strength rises from 100.4 to 139.4 MPa. This work offers insights into developing strong and transparent nanocomposite films with high MMT contents.
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Affiliation(s)
- Liyuan Peng
- State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, P. R. China
| | - Zhiqiang Fang
- State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, P. R. China
| | - Xiaoqi Lin
- State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, P. R. China
| | - Guanhui Li
- State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510640, P. R. China
| | - Kaihuang Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, P. R. China
| | - Xueqing Qiu
- School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Panyu District, Guangzhou 510006, P. R. China
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Lai DS, Osman AF, Adnan SA, Ibrahim I, Ahmad Salimi MN, Jaafar@Mustapha M. Toughening mechanism of thermoplastic starch nano-biocomposite with the hybrid of nanocellulose/nanobentonite. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Feizi ZH, Fatehi P. Interaction of hairy carboxyalkyl cellulose nanocrystals with cationic surfactant: Effect of carbon spacer. Carbohydr Polym 2021; 255:117396. [PMID: 33436224 DOI: 10.1016/j.carbpol.2020.117396] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/26/2020] [Accepted: 11/07/2020] [Indexed: 10/23/2022]
Abstract
Tuning the surface chemistry of nanocellulose is essential for developing its end-use applications. Herein, different carboxyalkylated cellulose nanocrystals (CNC) with similar charge densities but with tunable hairy structures were produced. The effect of carbon spacer of the grafted groups on the interaction of the CNC and a cationic surfactant, myristyl trimethyl ammonium bromide (MTAB), at different pH and salinity was explored. The CNC with longer grafted chain length was more hydrophobic, adsorbed more MTAB, and formed a more compact MTAB adlayer than did CNC with the shorter chain length. Also, the adsorption was higher at neutral pH, implying a high electrostatic attraction and hydrophobic interaction between substrates. The hydrophobic interaction of MTAB and hairy CNC in saline systems improved its adsorption. Although MTAB adsorbed more when its concentration was higher than its critical micelle concentration (CMC), the adsorbed adlayer had a less compact structure on the CNC surfaces.
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Affiliation(s)
- Zahra Hosseinpour Feizi
- Biorefining Research Institute, Green Processes Research Centre and Chemical Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B5E1, Canada
| | - Pedram Fatehi
- Biorefining Research Institute, Green Processes Research Centre and Chemical Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B5E1, Canada.
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Koshani R, Tavakolian M, van de Ven TGM. Cellulose-based dispersants and flocculants. J Mater Chem B 2020; 8:10502-10526. [PMID: 33136107 DOI: 10.1039/d0tb02021d] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Natural dispersants and flocculants, often referred to as dispersion stabilizers and liquid-solid separators, respectively, have secured a promising role in the bioprocessing community. They have various applications, including in biomedicine and in environmental remediation. A large fraction of existing dispersants and flocculants are synthesized from non-safe chemical compounds such as polyacrylamide and surfactants. Despite numerous advantages of synthetic dispersants and flocculants, issues such as renewability, sustainability, biocompatibility, and cost efficiency have shifted attention towards natural homologues, in particular, cellulose-based ones. Within the past decade, cellulose derivatives, obtained via chemical and mechanical treatments of cellulose fibrils, have successfully been used for these purposes. In this review article, by dividing the functional cellulosic compounds into "polymeric" and "nanoscale" categories, we provide insight into the engineering pathways, the structural frameworks, and surface chemistry of these "green" types of dispersants and flocculants. A summary of their efficiency and the controlling parameters is also accompanied by recent advances in their applications in each section. We are confident that the emergence of cellulose-based dispersing and flocculating agents will extend the boundaries of sustainable green technology.
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Affiliation(s)
- Roya Koshani
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada. and Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada.
| | - Mandana Tavakolian
- Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada. and Department of Chemical Engineering, McGill University, 3610 University Street, Montréal, QC H3A 0C5, Canada
| | - Theo G M van de Ven
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, QC H3A 0B8, Canada. and Quebec Centre for Advanced Materials (QCAM) and Pulp and Paper Research Center, McGill University, 3420 University Street, Montréal, QC H3A 2A7, Canada.
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Alves L, Ferraz E, Gamelas J. Composites of nanofibrillated cellulose with clay minerals: A review. Adv Colloid Interface Sci 2019; 272:101994. [PMID: 31394436 DOI: 10.1016/j.cis.2019.101994] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 11/27/2022]
Abstract
Biopolymers-based composites are, in general, environmentally friendly materials, which can be obtained from renewable sources. Some of them can also present promising properties to be used in food packaging and electronic devices, being thus logical substitutes to petroleum-based polymers, specifically plastics. Cellulose nanofibrils (CNF) obtained by chemical/enzymatic pre-treatments followed by a mechanical treatment appear as a new suitable biomaterial. However, CNF are still quite expensive materials, due to the required chemicals/equipment/energy involved, and additionally, they present some limitations such as high hydrophilicity/high water vapour permeability. The combination of CNF with clay minerals, such as montmorillonite or kaolinite, as widely available geo-resources, represents an excellent way to reduce the amount of CNF used, enabling the production of valuable materials and reducing costs; and, at the same time it is possible to improve the characteristics of the formed materials, such as mechanical, gas barrier and fire retardancy properties, if appropriate conditions of preparation are used. Nevertheless, to obtain hybrid CNF/clay composites with superior properties it is necessary to ensure a good dispersion of the inorganic material in the CNF suspension and a good compatibility among the inorganic and organic components. To fulfil this goal, several strategies can be considered, including physical treatments of the suspensions, CNF and clay surface chemical modifications, and the use of a coupling agent. In this review article, the state-of-the-art on a new emerging generation of composites (films, foams or coatings) based on nanofibrillated cellulose and nanoclay, with focus on strategies for their preparation and most relevant achievements is critically reviewed, bearing in mind their potential application as substitutes for common plastics. A third component has been eventually added to these organic-inorganic hybrids, e.g., chitosan, carboxymethylcellulose, borate or epoxy resin, to enhance specific characteristics of the material. Some general background on the production of different types of CNF and their main properties is previously provided.
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Zhu P, Liu Y, Fang Z, Kuang Y, Zhang Y, Peng C, Chen G. Flexible and Highly Sensitive Humidity Sensor Based on Cellulose Nanofibers and Carbon Nanotube Composite Film. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:4834-4842. [PMID: 30892906 DOI: 10.1021/acs.langmuir.8b04259] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Flexible and highly sensitive humidity sensors are crucial for humidity detection. In this study, a flexible cellulose nanofiber/carbon nanotube (NFC/CNT) humidity sensor with high sensitivity performance was developed via fast vacuum filtration. CNTs were well dispersed in water by using 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized NFC as a dispersant. More importantly, NFC also acted as a humidity sensitive material, achieving superior performance of NFC/CNT humidity sensors. The obtained NFC/CNT humidity sensor with 5 wt % CNT loading exhibits outstanding sensitive performance, and its response value reaches a maximum of 69.9% (Δ I/ I0) at 95% relative humidity (RH). It also displays good bending resistance and long-term stability. In addition, the NFC/CNT humidity sensor was employed to monitor human breath. Therefore, we believe that the flexible, highly sensitive, and simply designed NFC/CNT humidity sensor is a promising candidate for various applications in the field of humidity measurement.
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Affiliation(s)
- Penghui Zhu
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Yu Liu
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Zhiqiang Fang
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Yudi Kuang
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Yazeng Zhang
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Congxing Peng
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
| | - Gang Chen
- State Key Laboratory of Pulp and Paper Engineering, Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-Based Functional Materials , South China University of Technology , Guangzhou 510640 , China
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Gao Y, Guo X, Liu Y, Fang Z, Zhang M, Zhang R, You L, Li T, Liu RH. A full utilization of rice husk to evaluate phytochemical bioactivities and prepare cellulose nanocrystals. Sci Rep 2018; 8:10482. [PMID: 29992951 PMCID: PMC6041302 DOI: 10.1038/s41598-018-27635-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 06/06/2018] [Indexed: 12/18/2022] Open
Abstract
Rice husks (RHs) as an agro-waste generated from rice production, while its application is limited. This study was designed to introduce a full utilization of rice husks, which extracted the phytochemical at first and then produced cellulose nanocrystals (CNCs) as the use of the residue. Furthermore, the phytochemicals extracted from rice husk was identified and its biological activity, including antioxidant activity, cellular antioxidant activity (CAA) and antiproliferative activity, had been detected as well. Results showed the bound fraction of rice husk had higher antioxidant than common fruit and grain. Free fraction of rice husk deserved to have further analysis in antiproliferative activity due to its low cytotoxicity. The CNCs produced by residue was using delignification process and acid hydrolysis treatments. The chemical composition of the residue obtained after phytochemical extraction was determined. CNCs morphological investigation was performed using an optical microscope and atomic force microscopy (AFM). Our strategy is to achieve a comprehensive utilization of rice husks with both economy and environment benefits.
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Affiliation(s)
- Yue Gao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Xinbo Guo
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
| | - Yu Liu
- School of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Zhiqiang Fang
- School of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Mingwei Zhang
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, PR China
| | - Ruifen Zhang
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional Foods, Ministry of Agriculture/Guangdong Key Laboratory of Agricultural Products Processing, Guangzhou, 510610, PR China
| | - Lijun You
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Tong Li
- Department of Food Science, Stocking Hall, Cornell University, Ithaca, New York, 14853, USA
| | - Rui Hai Liu
- Department of Food Science, Stocking Hall, Cornell University, Ithaca, New York, 14853, USA.
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Ming S, Chen G, He J, Kuang Y, Liu Y, Tao R, Ning H, Zhu P, Liu Y, Fang Z. Highly Transparent and Self-Extinguishing Nanofibrillated Cellulose-Monolayer Clay Nanoplatelet Hybrid Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8455-8462. [PMID: 28771362 DOI: 10.1021/acs.langmuir.7b01665] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
A viable solution toward "green" optoelectronics is rooted in our ability to fabricate optoelectronics on transparent nanofibrillated cellulose (NFC) film substrates. However, the flammability of transparent NFC film poses a severe fire hazard in optoelectronic devices. Despite many efforts toward enhancing the fire-retardant features of transparent NFC film, making NFC film fire-retardant while maintaining its high transparency (≥90%) remains an ambitious objective. Herein, we combine NFC with NFC-dispersed monolayer clay nanoplatelets as a fire retardant to prepare highly transparent NFC-monolayer clay nanoplatelet hybrid films with a superb self-extinguishing behavior. Homogeneous and stable monolayer clay nanoplatelet dispersion was initially obtained by using NFC as a green dispersing agent with the assistance of ultrasonication and then used to blend with NFC to prepare highly transparent and self-extinguishing hybrid films by a water evaporation-induced self-assembly process. As the content of monolayer clay nanoplatelets increased from 5 wt % to 50 wt %, the obtained hybrid films presented enhanced self-extinguishing behavior (limiting oxygen index sharply increased from 21% to 96.5%) while retaining a ∼90% transparency at 600 nm. More significantly, the underlying mechanisms for the high transparency and excellent self-extinguishing behavior of these hybrid films with a clay nanoplatelet content of over 30 wt % were unveiled by a series of characterizations such as SEM, XRD, TGA, and limiting oxygen index tester. This work offers an alternative environmentally friendly, self-extinguishing, and highly transparent substrate to next-generation optoelectronics, and is aimed at providing a viable solution to environmental concerns that are caused by ever-increasing electronic waste.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Zhiqiang Fang
- Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology , Jinan 250353, Shandong, China
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Liu L, Li L, Qing Y, Yan N, Wu Y, Li X, Tian C. Mechanically strong and thermosensitive hydrogels reinforced with cellulose nanofibrils. Polym Chem 2016. [DOI: 10.1039/c6py01652a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Thermosensitive hydrogels possessing excellent mechanical strength were synthesized with cellulose nanofibrils as a reinforcing agent.
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Affiliation(s)
- Liu Liu
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
| | - Lei Li
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
| | - Yan Qing
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
- Hunan Provincial Collaborative Innovation Center for High-efficiency Utilization of Wood and Bamboo Resources
- Central South University of Forestry and Technology
| | - Ning Yan
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
- Faculty of Forestry
- University of Toronto
| | - Yiqiang Wu
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
- Hunan Provincial Collaborative Innovation Center for High-efficiency Utilization of Wood and Bamboo Resources
- Central South University of Forestry and Technology
| | - Xianjun Li
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
- Hunan Provincial Collaborative Innovation Center for High-efficiency Utilization of Wood and Bamboo Resources
- Central South University of Forestry and Technology
| | - Cuihua Tian
- College of Materials Science and Technology
- Central South University of Forestry and Technology
- China
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