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Gomez-Dopazo GB, Agosto Nieves RJ, Albarracín Rivera RL, Colon Morera SM, Nazario DR, Ramos I, Dmochowski IJ, Lee D, Bansal V. Cellulose acetate microwell plates for high-throughput colorimetric assays. RSC Adv 2024; 14:15319-15327. [PMID: 38741966 PMCID: PMC11089462 DOI: 10.1039/d4ra01317d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 05/04/2024] [Indexed: 05/16/2024] Open
Abstract
Single use plasticware (SUP) in scientific, diagnostic, and academic laboratories makes a significant contribution to plastic waste generation worldwide. Polystyrene (PS) microwell plates form a part of this waste. These plates are the backbone of high throughput colorimetric measurements in academic, research, and healthcare settings for detection/quantification of wide-ranging analytes including proteins, carbohydrates, nucleic acids, and enzyme activity. Polystyrene (PS) microwell plates serve as a platform for holding samples and reagents, where mixing initiates chemical reaction(s), and the ensuing color changes are quantified using a microplate reader. However, these plates are rarely reused or recycled, contributing to the staggering amounts of plastic waste generated in scientific laboratories. Here, we are reporting the fabrication of cellulose acetate (CA) microwell plates as a greener alternative to non-biodegradable PS plates and we demonstrate their application in colorimetric assays. These easy to fabricate, lighter weight, customizable, and environmentally friendly plates were fabricated in 96- and 384-well formats and made water impermeable through chemical treatment. The plates were tested in three different colorimetric analyses: (i) bicinchoninic acid assay (BCA) for protein quantification; (ii) chymotrypsin (CT) activity assay; and (iii) alkaline phosphatase (AP) activity assay. Color intensities were quantified using a freely available smartphone application, Spotxel® Reader (Sicasys Software GmbH). To benchmark the performance of this platform, the same assays were performed in commercial PS plates too and quantified using a UV/Vis microplate reader. The two systems yielded comparable linear correlation coefficients, LOD and LOQ values, thereby validating the CA plate-cell phone based analytical method. The CA microwell plates, coupled with smart phone optical data capture, provide greener, accessible, and scalable tools for all laboratory settings and are particularly well-suited for resource- and infrastructure-limited environments.
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Affiliation(s)
- Gabriela B Gomez-Dopazo
- Department of Chemistry, University of Puerto Rico at Cayey 205 Ave. Antonio R Barcelo Cayey PR-00736 USA
| | - Renis J Agosto Nieves
- Department of Chemistry, University of Puerto Rico at Cayey 205 Ave. Antonio R Barcelo Cayey PR-00736 USA
| | | | - Shaneily M Colon Morera
- Department of Chemistry, University of Puerto Rico at Cayey 205 Ave. Antonio R Barcelo Cayey PR-00736 USA
| | - Daniel Rivera Nazario
- Department of Physics and Electronics, University of Puerto Rico at Humacao CUH Station, 100 Road 908 Humacao PR-00791 USA
| | - Idalia Ramos
- Department of Physics and Electronics, University of Puerto Rico at Humacao CUH Station, 100 Road 908 Humacao PR-00791 USA
| | - Ivan J Dmochowski
- Department of Chemistry, University of Pennsylvania 231S, 34th Street Philadelphia PA 19104-6323 USA
| | - Daeyeon Lee
- Department of Chemical & Biomolecular Engineering 220S, 33rd Street Philadelphia PA 19104-6323 USA
| | - Vibha Bansal
- Department of Chemistry, University of Puerto Rico at Cayey 205 Ave. Antonio R Barcelo Cayey PR-00736 USA
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Yu X, Ji J, Wu QY, Gu L. Direct-coating of cellulose hydrogel on PVDF membranes with superhydrophilic and antifouling properties for high-efficiency oil/water emulsion separation. Int J Biol Macromol 2024; 256:128579. [PMID: 38048931 DOI: 10.1016/j.ijbiomac.2023.128579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 12/06/2023]
Abstract
As a well-known natural and innocuous plant constituent, cellulose consists of abundant hydroxyl groups and can tightly adsorb onto material surfaces hydrogen bonding, resulting in a superhydrophilic surface. In this work, the hydrophobic polyvinylidene fluoride (PVDF) membranes were modified by immersing them in cellulose hydrogel using a simple one-step process. The modified PVDF membrane exhibited excellent resistance to fouling and oil adhesion, making it highly effective in separating various oil-in-water emulsions. The cellulose-modified PVDF membranes achieved a high oil rejection rate (>99 %) and a maximum separation flux of 2675.2 L·m-2·h-1. Furthermore, even an oil-in-water emulsion containing bovine serum albumin maintained a steady permeation flux after four filtration cycles. Additionally, these cellulose-modified PVDF membranes demonstrated excellent underwater superoleophobicity across a wide range of pH levels and high saline conditions. Overall, these cellulose-modified superhydrophilic PVDF membranes are sustainable, environmentally friendly, easily scalable, and hold great promise for practical applications in oily wastewater treatment.
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Affiliation(s)
- Xiao Yu
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Jing Ji
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518000, China; University of Chinese Academy of Sciences, Beijing 100049, China; Guangzhou Institute of Advanced Technology, Guangzhou 511458, China
| | - Qing-Yun Wu
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China.
| | - Lin Gu
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China.
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3
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Peng J, Huang Y, Fu R, Lu J, Wang W, Zhu W, Yu Y, Guo F, Mai H. Microscopic dissolution process of cellulose in alkaline aqueous solvents and its application in CNFs extraction - Investigating temperature as a variable. Carbohydr Polym 2023; 322:121361. [PMID: 37839827 DOI: 10.1016/j.carbpol.2023.121361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 08/23/2023] [Accepted: 08/30/2023] [Indexed: 10/17/2023]
Abstract
The target of this study is to gain a deeper understanding of the micro-dissolution process of cellulose in alkaline aqueous solutions and to develop a novel method for extracting cellulose nanofibrils (CNFs). Herein, the dissolution process of cellulose in alkaline aqueous solutions will be controlled by varying the temperature, and the undissolved cellulose will be analyzed to reveal the microscopic dissolution process of cellulose, and a novel process for extracting cellulose nanofibrils (CNFs) will be developed based on the findings. The crystalline structure of cellulose was gradually disrupted as the dissolution progressed, and the crystal form of cellulose changed gradually from cellulose I to cellulose II during the dissolution process, while all undissolved cellulose crystals remained as cellulose I. Cellulose, after its structure is disrupted during the dissolution process, will inevitably decompose into CNFs, and the microscopic dissolution process of cellulose follows a "top-down" dissolution sequence. The CNFs extraction method developed in this study can extract CNFs with high yield (>60 %) in a stable manner, as well as narrow particle size distribution, high crystallinity (>77 %), and good thermal stability. This study enhances the comprehension of the dissolution process of cellulose and paves a possible way for industrialization of CNFs production.
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Affiliation(s)
- Jinping Peng
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China; Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Jieyang 515200, China
| | - Yihui Huang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Rongwei Fu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Jinqing Lu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Weiquan Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Wentao Zhu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Yuxuan Yu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Fan Guo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Haiyan Mai
- Department of Pharmacy, Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.
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4
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Zhao J, Ge W, Shuai J, Gao X, Zhang F, Wang X. Efficient Cellulose Dissolution and Film Formation Enabled by Superbase Amino Acid Ionic Liquids. Macromol Rapid Commun 2023; 44:e2300175. [PMID: 37222244 DOI: 10.1002/marc.202300175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/26/2023] [Indexed: 05/25/2023]
Abstract
Cellulose is a promising feedstock for the production of sustainable materials. To fully utilize its potential, exploring efficient cellulose solvents is a paramount prerequisite. In this study, ten superbase amino acid ionic liquids (SAAILs) are synthesized using 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) with different amino acid anions via a simple neutralization method. The properties of these SAAILs, such as viscosity and glass transition temperature, varied with their cation and anion structures. The ability of the SAAILs to dissolve cellulose is related to their Kamlet-Taft parameters, particularly hydrogen bond basicity (β). The main driving force for cellulose dissolution in SAAILs is thought to be hydrogen bonding interactions between SAAILs and cellulose hydroxyl groups. Four SAAILs composed of DBN or DBU cations and proline, or aspartic acid anions are identified as promising solvents for preparing regenerated cellulose films (RCFs). The RCF prepared from [DBN]Proline(Pro) showed a favorable combination of high tensile strength (76.9 MPa), high Young's modulus (5201.2 MPa), good transparency (≈70% at 550 nm), and smooth surface morphology. These halogen- and metal-free SAAILs show the potential to provide a new avenue for cellulose processing.
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Affiliation(s)
- Junmeng Zhao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Wenjiao Ge
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Jianbo Shuai
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Xiangli Gao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
| | - Fengshan Zhang
- Shandong Huatai Paper Industry Shareholding Co., Ltd, Shandong, 257300, P. R. China
| | - Xiaohui Wang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, P. R. China
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Wang X, Meng Z, Tian X, Kou J, Xu K, Wang Z, Yang Y. A novel coumarin derivative-grafted dialdehyde cellulose-based fluorescent sensor for selective and sensitive detection of Fe 3. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 292:122378. [PMID: 36716602 DOI: 10.1016/j.saa.2023.122378] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/27/2022] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
A new fluorescent probe DAC-NCH with specific response to Fe3+ was synthesized via condensation reaction between dialdehyde cellulose and coumarin derivative. This probe exhibited a significant "turn-off" fluorescence response to Fe3+, accompanied by the fluorescence color change from bright pink to colorless. DAC-NCH was highly selective for Fe3+ and could achieve detection within a short time (<3 min). The detection limit of DAC-NCH for Fe3+ was determined to be as low as 91.7 nM. The complexation mechanism of DAC-NCH with Fe3+ was confirmed by Job's plot, FTIR analysis, 1H NMR titration, and density functional theory (DFT) calculations. In addition, DAC-NCH could be used for the determination of Fe3+ in actual water samples, and DAC-NCH-embedded fluorescent membrane was able to serve as a reliable platform for the detection of Fe3+.
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Affiliation(s)
- Xiaoyuan Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhiyuan Meng
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xuechun Tian
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiali Kou
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Kai Xu
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Zhonglong Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Yiqin Yang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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6
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Liu Q, Zhu S. Fractionation of depectinated sugar beet pulp into cellulose, hemicellulose, and lignin with NaOH/urea/H 2O and ionic liquid. Int J Biol Macromol 2023; 242:124706. [PMID: 37146852 DOI: 10.1016/j.ijbiomac.2023.124706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/02/2023] [Accepted: 04/28/2023] [Indexed: 05/07/2023]
Abstract
This study proposes a novel and feasible dissolution and fractionation method of depectinated sugar beet pulp (SBP) in NaOH/Urea/H2O, ionic liquid (IL) and alkaline treatment processes. Interestingly, the complicated structure of SBP can be treated with 30 % H2SO4 to increase the dissolution rate. Scanning electron microscope (SEM) analysis confirmed that the appearance of cellulose and hemicellulose obtained by two methods were different. At the same time, two lignin fractions showed irregular high-density clusters, which were composed of a large number of submicron particles. The crystal structure of two cellulose fractions changed from cellulose I to cellulose II. The thermal stability of cellulose and lignin obtained by ionic liquid was slightly better than that obtained by NaOH/urea/H2O. Results of Fourier transform infrared (FTIR) and 13C NMR showed that the chemical structures of SBP cellulose, hemicellulose and lignin regenerated from NaOH/urea/H2O and ionic liquid were similar.
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Affiliation(s)
- Qiang Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Siming Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510641, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510641, China; College of Life and Geographic Sciences, Kashi University, Kashi 844000, China.
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7
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Roos E, Sebastiani D, Brehm M. A force field for bio-polymers in ionic liquids (BILFF) - part 2: cellulose in [EMIm][OAc]/water mixtures. Phys Chem Chem Phys 2023; 25:8755-8766. [PMID: 36897117 DOI: 10.1039/d2cp05636d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
We present the extension of our force field BILFF (Bio-Polymers in Ionic Liquids Force Field) to the bio-polymer cellulose. We already published BILFF parameters for mixtures of ionic liquid 1-ethyl-3-methylimidazolium acetate ([EMIm][OAc]) with water. Our all-atom force field focuses on a quantitative reproduction of the hydrogen bonds in the complex mixture of cellulose, [EMIm]+, [OAc]- and water when compared to reference ab initio molecular dynamics (AIMD) simulations. To enhance the sampling, 50 individual AIMD simulations starting from different initial configurations were performed for cellulose in solvent instead of one long simulation, and the resulting averages were used for force field optimization. All cellulose force field parameters were iteratively adjusted starting from the literature force field of W. Damm et al. We were able to obtain a very good agreement with respect to both the microstructure of the reference AIMD simulations and experimental results such as the system density (even at higher temperatures) and the crystal structure. Our new force field allows performing very long simulations of large systems containing cellulose solvated in (aqueous) [EMIm][OAc] with almost ab initio accuracy.
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Affiliation(s)
- Eliane Roos
- Institut für Chemie - Theoretische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
| | - Daniel Sebastiani
- Institut für Chemie - Theoretische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
| | - Martin Brehm
- Institut für Chemie - Theoretische Chemie, Martin-Luther-Universität Halle-Wittenberg, Von-Danckelmann-Platz 4, 06120 Halle (Saale), Germany.
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8
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Porto DS, de Faria CMG, Inada NM, Frollini E. Polyurethane films formation from microcrystalline cellulose as a polyol and cellulose nanocrystals as additive: Reactions favored by the low viscosity of the source of isocyanate groups used. Int J Biol Macromol 2023; 236:124035. [PMID: 36921831 DOI: 10.1016/j.ijbiomac.2023.124035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/17/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023]
Abstract
To simultaneously form films while synthesizing solvent-free and catalyst-free bio-based polyurethanes, hexamethylene diisocyanate trimer was selected as an isocyanate group source to produce a low-viscosity reaction medium for dispersing high contents of microcrystalline cellulose (MCC, polyol) and cellulose nanocrystals (CNC). Castor oil was used as an additional polyol source. Up to 80 % of the MCC was dispersed, producing a film exhibiting the highest Tg (72 °C), tensile strength (18 MPa), and Young's modulus (522.4 MPa). 12.5 % (30 % MCC) and 7.5 % (50 % MCC) of CNC dispersed in the reaction medium formed films stiffer than their counterparts. All the films exhibited transparency and high crystallinity. The contact angle/zeta potential (ζ) indicated hydrophobic film surfaces. At pH 7.4, ζ suggested that the films interacted with physiological fluids favorably. The films were non-cytotoxic, and the composites exhibited cell growth compared with the control. The reported results, as far as it is known, are unprecedented.
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Affiliation(s)
- Deyvid S Porto
- Macromolecular Materials and Lignocellulosic Fibers Group, Center of Research on Science and Technology of BioResources, São Carlos Institute of Chemistry, Trabalhador São Carlense Ave, 400, 13566-590 São Carlos, SP, Brazil
| | - Clara Maria Gonçalves de Faria
- São Carlos Institute of Physics, University of São Paulo, Trabalhador São Carlense Ave, 400, 13566-590 São Carlos, SP, Brazil
| | - Natalia M Inada
- São Carlos Institute of Physics, University of São Paulo, Trabalhador São Carlense Ave, 400, 13566-590 São Carlos, SP, Brazil
| | - Elisabete Frollini
- Macromolecular Materials and Lignocellulosic Fibers Group, Center of Research on Science and Technology of BioResources, São Carlos Institute of Chemistry, Trabalhador São Carlense Ave, 400, 13566-590 São Carlos, SP, Brazil.
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9
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Research progress on low dielectric constant modification of cellulose insulating paper for power transformers. Front Chem Sci Eng 2023. [DOI: 10.1007/s11705-022-2259-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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10
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Feng Y, Cölfen H, Xiong R. Organized mineralized cellulose nanostructures for biomedical applications. J Mater Chem B 2023. [PMID: 36892529 DOI: 10.1039/d2tb02611b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Cellulose is the most abundant naturally-occurring polymer, and possesses a one-dimensional (1D) anisotropic crystalline nanostructure with outstanding mechanical robustness, biocompatibility, renewability and rich surface chemistry in the form of nanocellulose in nature. Such features make cellulose an ideal bio-template for directing the bio-inspired mineralization of inorganic components into hierarchical nanostructures that are promising in biomedical applications. In this review, we will summarize the chemistry and nanostructure characteristics of cellulose and discuss how these favorable characteristics regulate the bio-inspired mineralization process for manufacturing the desired nanostructured bio-composites. We will focus on uncovering the design and manipulation principles of local chemical compositions/constituents and structural arrangement, distribution, dimensions, nanoconfinement and alignment of bio-inspired mineralization over multiple length-scales. In the end, we will underline how these cellulose biomineralized composites benefit biomedical applications. It is expected that this deep understanding of design and fabrication principles will enable construction of outstanding structural and functional cellulose/inorganic composites for more challenging biomedical applications.
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Affiliation(s)
- Yanhuizhi Feng
- Department of Periodontology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai 200072, China
| | - Helmut Cölfen
- Physical Chemistry, Department of Chemistry, University of Konstanz, Universitätsstraße 10, Konstanz, Germany.
| | - Rui Xiong
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China.
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Wu Y, Si H, Yu X, Fu F, Wang Z, Yao J, Liu X. Enhancing the solubility and antimicrobial activity of cellulose through esterification modification using amino acid hydrochlorides. Int J Biol Macromol 2023; 226:793-802. [PMID: 36526062 DOI: 10.1016/j.ijbiomac.2022.12.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 11/22/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
Most amino acid molecules have good water solubility and are rich in functional groups, which makes them a promising derivatizing agent for cellulose. However, self-condensation of amino acids and low reaction efficiency always happen during esterification. Here, amino acid hydrochloride ([AA]Cl) is selected as raw material to synthesize cellulose amino acid ester (CAE). Based on TG-MS coupling technology, a significantly faster reaction rate of [AA]Cl compared to raw amino acid can be observed visually. CAE with the degree of substitution 0.412-0.516 is facilely synthesized under 130-170 °C for 10-50 min. Moreover, the effects of amounts of [AA]Cl agent, temperature, and time on the esterification are studied. The CAE can be well dissolved in 7 wt% NaOH aq., resulting in a 7.5 wt% dope. The rheological test of the dope demonstrated a shear-thinning behavior for Newtonian-like fluid, and a high gel temperature (41.7 °C). Further, the synthesized products show distinct antibacterial activity and the bacteriostatic reduction rate against E. coli can reach 99.5 %.
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Affiliation(s)
- Yang Wu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hongkuo Si
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiaodong Yu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Feiya Fu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China.
| | - Zongqian Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China.
| | - Juming Yao
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Xiangdong Liu
- Institute of Composite Materials, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
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12
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Fan H, Song J, Liu H, Sun Z, Wang Z. Editorial: Preparation of functional materials and utilization of renewable resources in green solvents. Front Chem 2022; 10:1085405. [DOI: 10.3389/fchem.2022.1085405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 11/03/2022] [Indexed: 11/16/2022] Open
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Genipin-crosslinked gelatin-based composite hydrogels reinforced with amino-functionalized microfibrillated cellulose. Int J Biol Macromol 2022; 222:3155-3167. [DOI: 10.1016/j.ijbiomac.2022.10.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/08/2022] [Accepted: 10/10/2022] [Indexed: 11/05/2022]
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14
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Xu KJ, Zhang BQ, Qiao X, Liu CY. Cellulose Solubility in Deep Eutectic Solvents: Inspecting Quantitative Hydrogen-Bonding Analysis. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2801-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Recent progress in the application of plant-based colloidal drug delivery systems in the pharmaceutical sciences. Adv Colloid Interface Sci 2022; 307:102734. [DOI: 10.1016/j.cis.2022.102734] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/24/2022] [Accepted: 07/13/2022] [Indexed: 01/11/2023]
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16
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Debenzylation of Benzyl-Protected Methylcellulose. POLYSACCHARIDES 2022. [DOI: 10.3390/polysaccharides3030028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Methyl cellulose and its derivatives are widely used in the food industry, cosmetics, and as construction materials. The properties of methyl celluloses (MC) strongly depend on their degrees and positions of substitution. In order to generate MCs with uncommon blocky substitution, we apply fully protected O-benzyl-O-methyl celluloses (BnMC). Such complex polysaccharide derivatives could not be deprotected completely and without shift of the composition by methods usually applied to mono- and oligosaccharides. Therefore, a facile debenzylation method was developed based on photo-initiated free-radical bromination in the presence of hydrobromic acid scavengers followed by alkaline treatment. The reaction proceeds under homogeneous conditions and without the aid of any catalyst. There is no need for expensive equipment, materials, anhydrous reagents, or running the reaction under anhydrous conditions. Reaction parameters were investigated and optimized for successful debenzylation of completely protected BnMC with degrees of methyl substitution (DSMe) around 1.9 (and DSBn around 1.1). Side-product-free and almost complete debenzylation was achieved when 1,2-epoxybutane (0.5 eq./eq. N-bromosuccinimide) and 2,6-di-tert-butylpyridine (0.5 eq./eq. N-bromosuccinimide) were used in the reaction. Furthermore, ATR-IR and 1H NMR spectroscopy confirmed the successful removal of benzyl ether groups. The method was developed to monitor the transglycosylation reaction of the BnMC with permethylated cellulose, for which the deprotection of many small samples in parallel is required. This comprises the determination of the methyl pattern in the glucosyl units by gas-liquid chromatography (GLC), as well as oligosaccharide analysis by liquid chromatography mass spectrometry (LC-MS) after perdeuteromethylation and partial hydrolysis to determine the methyl pattern in the chains. The unavoidable partial chain degradation during debenzylation does not interfere with this analytical application, but, most importantly, the DS and the methyl pattern were almost congruent for the debenzylated product and the original MC, indicating the full success of this approach The presented method provides an unprecedented opportunity for high throughput and parallel debenzylation of complicated glucans, such as BnMC (as a model compound), for analytical purposes. For comparison, debenzylation using Na/NH3 was applied to BnMC and resulted in a completely debenzylated product with a remarkably high recovery yield of 99 mol% and is, thus, the method of choice for synthetic applications, e.g., for the transglycosylation product prepared under the selected conditions in a preparative scale.
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Wever PD, Janssens J, Fardim P. Fabrication of cellulose cryogel beads via room temperature dissolution in onium hydroxides. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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