1
|
Lightweight and anisotropic cellulose nanofibril/rectorite composite sponges for efficient dye adsorption and selective separation. Int J Biol Macromol 2022; 207:130-139. [PMID: 35257726 DOI: 10.1016/j.ijbiomac.2022.03.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/22/2022] [Accepted: 03/02/2022] [Indexed: 12/12/2022]
Abstract
Constructing lightweight and porous adsorbents which can effectively remove dye contaminants is of great significance in the field of the sewage treatment. In this work, anisotropic cellulose nanofibril (CNF) composite sponges assisted by rectorites are fabricated through directional freeze-drying. The resulted composite sponge exhibits the superior saturated adsorption capacity and removal efficiency of 120.0 mg/g and 96.1% for methylene blue (MB), respectively, which is better than the pure CNF sponge and rectorite powders. This is attributed to the strong electrostatic interaction between CNFs and MB, and good cation exchange property of rectorites inside the three-dimensional (3D) highly porous composite sponge. The MB adsorption process of the composite sponge fits to the pseudo-second-order kinetic model and the Langmuir isotherm model well, which is affected by both boundary layer and intraparticle diffusion, resulting in a theoretical maximum adsorption capacity of 214.6 mg/g. Moreover, it also possesses a selective adsorption capacity for anionic and cationic dyes, which is expected to realize the separation treatment of different dyes according to actual application requirements.
Collapse
|
2
|
Tang N, Chen Y, Li Y, Yu B. 2D Polymer Nanonets: Controllable Constructions and Functional Applications. Macromol Rapid Commun 2022; 43:e2200250. [PMID: 35524950 DOI: 10.1002/marc.202200250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/24/2022] [Indexed: 11/12/2022]
Abstract
Two-dimensional (2D) polymer nanonets have demonstrated great potential in various application fields due to their integrated advantages of ultrafine diameter, small pore size, high porosity, excellent interconnectivity, and large specific surface area. Here, a comprehensive overview of the controlled constructions of the polymer nanonets derived from electrospinning/netting, direct electronetting, self-assembly of cellulose nanofibers, and nonsolvent-induced phase separation is provided. Then, the widely researched multifunctional applications of polymer nanonets in filtration, sensor, tissue engineering, and electricity are also given. Finally, the challenges and possible directions for further developing the polymer nanonets are also intensively highlighted. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Ning Tang
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yu Chen
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yuyao Li
- School of Textile Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Bin Yu
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, 310018, China
| |
Collapse
|
3
|
Zhang Y, Ren J, Yang Z, Ma Y, Zhang Q, Zhang B. Fabrication of Surface-Imprinted Magnetic Wrinkled Microspheres and Their Specific Adsorption of BSA. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yunfei Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
- Xi’an Key Laboratory of Functional Organic Porous Materials, Northwestern Polytechnical University, Xi’an 710129, China
| | - Jianquan Ren
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Zuoting Yang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yiran Ma
- Queen Mary University of London Engineering School, Northwestern Polytechnical University, Xi’an 710129, China
| | - Qiuyu Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
- Xi’an Key Laboratory of Functional Organic Porous Materials, Northwestern Polytechnical University, Xi’an 710129, China
| | - Baoliang Zhang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
- Shaanxi Engineering and Research Center for Functional Polymers on Adsorption and Separation, Sunresins New Materials Co. Ltd., Xi’an 710072, China
| |
Collapse
|
4
|
Engineering nanocellulose superabsorbent structure by controlling the drying rate. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124943] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
5
|
Chen Y, Zhang L, Mei C, Li Y, Duan G, Agarwal S, Greiner A, Ma C, Jiang S. Wood-Inspired Anisotropic Cellulose Nanofibril Composite Sponges for Multifunctional Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35513-35522. [PMID: 32672439 DOI: 10.1021/acsami.0c10645] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nanocellulose-based porous materials have been recently considered as ideal candidates in various applications. However, challenges on performances remain owing to the disorderly structure and the limited transport specificity. Herein, wood-inspired composite sponges consisting of cellulose nanofibrils (CNFs) and high-aspect-ratio silver nanowires (AgNWs) were generated with anisotropic properties by the directional freeze-drying. The obtained composite sponges exhibited attractive features, such as an excellent compressive stress of 24.5 kPa, low percolation threshold of 0.1 vol % AgNWs, and high electrical conductivity of 1.52 S/cm. Furthermore, the self-assembled ordered structure in the longitudinal direction and synergistic effect between CNFs and AgNWs benefited the sponge interesting anisotropic electrical conductivity, thermal diffusivity, ultrafast electrically induced heating (<5 s), sensitive pressure sensing (errors <0.26%), and electromagnetic interference (EMI) shielding for special practical demands. This multifunctional material inspired by natural woods is expected to broaden new applications as electronic devices for an intelligent switch or EMI shielding.
Collapse
Affiliation(s)
- Yiming Chen
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lin Zhang
- MIT Media Lab, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Changtong Mei
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yang Li
- Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
- Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410083, China
| | - Gaigai Duan
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Seema Agarwal
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Andreas Greiner
- Macromolecular Chemistry, Bavarian Polymer Institute, University of Bayreuth, Universitätsstrasse 30, 95440 Bayreuth, Germany
| | - Chunxin Ma
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Shaohua Jiang
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
6
|
Zhang S, Liu H, Tang N, Ge J, Yu J, Ding B. Direct electronetting of high-performance membranes based on self-assembled 2D nanoarchitectured networks. Nat Commun 2019; 10:1458. [PMID: 30926802 PMCID: PMC6441005 DOI: 10.1038/s41467-019-09444-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 03/11/2019] [Indexed: 12/26/2022] Open
Abstract
There is an increasing demand worldwide on advanced two-dimensional (2D) nanofibrous networks with applications ranging from environmental protection and electrical devices to bioengineering. Design of such nanoarchitectured materials has been considered a long-standing challenge. Herein, we report a direct electronetting technology for the fabrication of self-assembled 2D nanoarchitectured networks (nano-nets) from various materials. Tailoring of the precursor solution and of the microelectric field allows charged droplets, which are ejected from a Taylor cone, to levitate, deform and phase separate before they self-assemble a 2D nanofibre network architecture. The fabricated nano-nets show mechanical robustness and benefit from nanostructural properties such as enhanced surface wettability, high transparency, separation and improved air filtration properties. Calcination of the nano-nets results in the formation of carbon nano-nets with electric conductivity and titanium dioxide nano-nets with bioprotective properties.
Collapse
Affiliation(s)
- Shichao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Hui Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Ning Tang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Jianlong Ge
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, Shanghai, 201620, China.
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 200051, China.
| |
Collapse
|
7
|
Arola S, Ansari M, Oksanen A, Retulainen E, Hatzikiriakos SG, Brumer H. The sol-gel transition of ultra-low solid content TEMPO-cellulose nanofibril/mixed-linkage β-glucan bionanocomposite gels. SOFT MATTER 2018; 14:9393-9401. [PMID: 30420978 DOI: 10.1039/c8sm01878b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We present the preparation, morphological analysis, and rheological characterization of ultra-low solid content gels prepared by physically cross-linking TEMPO-oxidized cellulose nanofibrils (TEMPO-CNF) with the soluble plant-cell-wall polysaccharide, mixed-linkage β-glucan (MLG). Of particular note, gel formation was rapidly induced by very small amounts of MLG (e.g. 0.125% w/v) at extremely low TEMPO-CNF concentration (0.05% w/v), which independently were otherwise fluid and thus easily handled. Rheology of these bionanocomposite gel systems as a function of MLG and TEMPO-CNF concentrations revealed that the critical gel concentration of MLG and TEMPO-CNF followed a power-law relation of the concentration of the other component. Surprisingly, these systems also exhibited an additional transition to thick gels at high TEMPO-CNF and MLG concentrations that was visible only at low frequencies. Cryogenic scanning electron microscopy (cryo-SEM) imaging of admixture solutions and gels revealed increased network crowding with increasing MLG amounts. The data are consistent with the hypothesis that non-covalent cellulose-MLG interactions, analogous to those occurring within plant cell walls, drive gel formation. The ability to tune gel physical properties simply by controlling CNF (a promising forest bioproduct) and MLG (a readily available agricultural polysaccharide) fractions at very low solid and polymer content opens new possibilities for material applications in diverse industries.
Collapse
Affiliation(s)
- Suvi Arola
- Michael Smith Laboratories, University of British Columbia, 2185 East Mall, Vancouver, BC V6T 1Z4, Canada.
| | | | | | | | | | | |
Collapse
|
8
|
Yi Z, Cheng P, Chen J, Liu K, Liu Q, Li M, Zhong W, Wang W, Lu Z, Wang D. PVA-co-PE Nanofibrous Filter Media with Tailored Three-Dimensional Structure for High Performance and Safe Aerosol Filtration via Suspension-Drying Procedure. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02523] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zhibing Yi
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Pan Cheng
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Jiahui Chen
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Ke Liu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Qiongzhen Liu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Mufang Li
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Weibing Zhong
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Wenwen Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Zhentan Lu
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Hubei Key Laboratory of Advanced Textile Materials & Application, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials & Application, Wuhan Textile University, Wuhan 430200, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| |
Collapse
|
9
|
Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer-Aerogele und -Schäume: Chemie, Eigenschaften und Anwendungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201709014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Wim J. Malfait
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Matthias M. Koebel
- Building Energy Materials & Components; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
| | - Gustav Nyström
- Angewandte Holzforschung; Eidgenössische Materialprüfungs- und Forschungsanstalt (Empa); Überlandstrasse 129 CH-8600 Dübendorf Schweiz
- Departement Gesundheitswissenschaften und Technologie; ETH Zürich; Schmelzbergstrasse 9 CH-8092 Zürich Schweiz
| |
Collapse
|
10
|
Zhao S, Malfait WJ, Guerrero-Alburquerque N, Koebel MM, Nyström G. Biopolymer Aerogels and Foams: Chemistry, Properties, and Applications. Angew Chem Int Ed Engl 2018; 57:7580-7608. [DOI: 10.1002/anie.201709014] [Citation(s) in RCA: 336] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Shanyu Zhao
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Wim J. Malfait
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Natalia Guerrero-Alburquerque
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Matthias M. Koebel
- Building Energy Materials & Components Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
| | - Gustav Nyström
- Applied Wood Materials Laboratory; Swiss Federal Laboratories for Materials Science and Technology (Empa); Überlandstrasse 129 CH-8600 Dübendorf Switzerland
- Department of Health Science and Technology; ETH Zurich; Schmelzbergstrasse 9 CH-8092 Zürich Switzerland
| |
Collapse
|
11
|
Seantier B, Bendahou D, Bendahou A, Grohens Y, Kaddami H. Multi-scale cellulose based new bio-aerogel composites with thermal super-insulating and tunable mechanical properties. Carbohydr Polym 2015; 138:335-48. [PMID: 26794770 DOI: 10.1016/j.carbpol.2015.11.032] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/08/2015] [Accepted: 11/11/2015] [Indexed: 01/16/2023]
Abstract
Bio-composite aerogels based on bleached cellulose fibers (BCF) and cellulose nanoparticles having various morphological and physico-chemical characteristics are prepared by a freeze-drying technique and characterized. The various composite aerogels obtained were compared to a BCF aerogel used as the reference. Severe changes in the material morphology were observed by SEM and AFM due to a variation of the cellulose nanoparticle properties such as the aspect ratio, the crystalline index and the surface charge density. BCF fibers form a 3D network and they are surrounded by the cellulose nanoparticle thin films inducing a significant reduction of the size of the pores in comparison with a neat BCF based aerogel. BET analyses confirm the appearance of a new organization structure with pores of nanometric sizes. As a consequence, a decrease of the thermal conductivities is observed from 28mWm(-1)K(-1) (BCF aerogel) to 23mWm(-1)K(-1) (bio-composite aerogel), which is below the air conductivity (25mWm(-1)K(-1)). This improvement of the insulation properties for composite materials is more pronounced for aerogels based on cellulose nanoparticles having a low crystalline index and high surface charge (NFC-2h). The significant improvement of their insulation properties allows the bio-composite aerogels to enter the super-insulating materials family. The characteristics of cellulose nanoparticles also influence the mechanical properties of the bio-composite aerogels. A significant improvement of the mechanical properties under compression is obtained by self-organization, yielding a multi-scale architecture of the cellulose nanoparticles in the bio-composite aerogels. In this case, the mechanical property is more dependent on the morphology of the composite aerogel rather than the intrinsic characteristics of the cellulose nanoparticles.
Collapse
Affiliation(s)
- Bastien Seantier
- Université de Bretagne Sud, Laboratoire Ingénierie des Matériaux de Bretagne, BP 92116, 56321 Lorient Cedex, France
| | - Dounia Bendahou
- Université de Bretagne Sud, Laboratoire Ingénierie des Matériaux de Bretagne, BP 92116, 56321 Lorient Cedex, France; Cadi Ayyad University, Faculty of Sciences and Technologies, Laboratory of Organometallic and Macromolecular Chemistry, Avenue AbdelkrimElkhattabi, B.P. 549, Marrakech, Morocco
| | - Abdelkader Bendahou
- Université de Bretagne Sud, Laboratoire Ingénierie des Matériaux de Bretagne, BP 92116, 56321 Lorient Cedex, France
| | - Yves Grohens
- Université de Bretagne Sud, Laboratoire Ingénierie des Matériaux de Bretagne, BP 92116, 56321 Lorient Cedex, France.
| | - Hamid Kaddami
- Cadi Ayyad University, Faculty of Sciences and Technologies, Laboratory of Organometallic and Macromolecular Chemistry, Avenue AbdelkrimElkhattabi, B.P. 549, Marrakech, Morocco.
| |
Collapse
|
12
|
Nemoto J, Saito T, Isogai A. Simple Freeze-Drying Procedure for Producing Nanocellulose Aerogel-Containing, High-Performance Air Filters. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19809-15. [PMID: 26301859 DOI: 10.1021/acsami.5b05841] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Simple freeze-drying of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibril (TOCN) dispersions in water/tert-butyl alcohol (TBA) mixtures was conducted to prepare TOCN aerogels as high-performance air filter components. The dispersibility of the TOCNs in the water/TBA mixtures, and the specific surface area (SSA) of the resulting TOCN aerogels, was investigated as a function of the TBA concentration in the mixtures. The TOCNs were homogeneously dispersed in the water/TBA mixtures at TBA concentrations up to 40% w/w. The SSAs of the TOCN aerogels exceeded 300 m2/g when the TBA concentration in the aqueous mixtures was in the range from 20% to 50% w/w. When a commercially available, high-efficiency particulate air (HEPA) filter was combined with TOCN/water/TBA dispersions prepared using 30% TBA, and the product was freeze-dried, the resulting TOCN aerogel-containing filters showed superior filtration properties. This was because nanoscale, spider-web-like networks of the TOCNs with large SSAs were formed within the filter.
Collapse
Affiliation(s)
- Junji Nemoto
- Department of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
- Central Research Laboratory, Hokuetsu-Kishu Paper Co. Ltd. , 3-5-1, Nishizao, Nagaoka, Niigata 940-0027, Japan
| | - Tsuguyuki Saito
- Department of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
| | - Akira Isogai
- Department of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
| |
Collapse
|
13
|
Shimizu M, Saito T, Isogai A. Bulky quaternary alkylammonium counterions enhance the nanodispersibility of 2,2,6,6-tetramethylpiperidine-1-oxyl-oxidized cellulose in diverse solvents. Biomacromolecules 2014; 15:1904-9. [PMID: 24750066 DOI: 10.1021/bm500384d] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The degree of nanodispersion of cellulose in diverse solvents is a significant primary criterion for the preparation of bulk nanocelluloses and nanocellulose-containing composites. Here, high degrees of nanodispersion of fibrous 2,2,6,6-tetramethylpiperidine-1-oxyl-oxidized cellulose (TOC) were achieved in various solvents by efficiently incorporating quaternary alkylammoniums (QAs) as counterions of TOC carboxyl groups via simple ion-exchange treatment in water. Tetramethyl-, tetraethyl-, tetra-n-propyl-, and tetra-n-butylammoniums were used as the QAs. The TOC-QAs were converted to TOC nanofibrils (TOCN-QAs) with a high nanofibrillation yield via mechanical disintegration in not only water but also methanol and other organic solvents after solvent-exchange treatment. Fourier transform infrared spectra of cast TOCN-QA films and the electric conductivities of the TOCN-QA dispersions indicated that the TOCNs-QAs were dispersed primarily through dissociation of the bulky QA carboxylate groups. Moreover, the TOC-QAs were nanodispersible in water even after being oven dried at 105 °C, which is advantageous for their practical application.
Collapse
Affiliation(s)
- Michiko Shimizu
- Department of Biomaterials Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
| | | | | |
Collapse
|
14
|
Lavoine N, Desloges I, Bras J. Microfibrillated cellulose coatings as new release systems for active packaging. Carbohydr Polym 2014; 103:528-37. [DOI: 10.1016/j.carbpol.2013.12.035] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 10/30/2013] [Accepted: 12/11/2013] [Indexed: 02/06/2023]
|
15
|
Lavoine N, Bras J, Desloges I. Mechanical and barrier properties of cardboard and 3D packaging coated with microfibrillated cellulose. J Appl Polym Sci 2013. [DOI: 10.1002/app.40106] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nathalie Lavoine
- Laboratoire de Génie des Procédés Papetiers (LGP2); UMR CNRS 5518 Grenoble INP-Pagora - 461 rue de la papeterie 38402 Saint-Martin-d'Hères France
| | - Julien Bras
- Laboratoire de Génie des Procédés Papetiers (LGP2); UMR CNRS 5518 Grenoble INP-Pagora - 461 rue de la papeterie 38402 Saint-Martin-d'Hères France
| | - Isabelle Desloges
- Laboratoire de Génie des Procédés Papetiers (LGP2); UMR CNRS 5518 Grenoble INP-Pagora - 461 rue de la papeterie 38402 Saint-Martin-d'Hères France
| |
Collapse
|
16
|
Cao X, Wang X, Ding B, Yu J, Sun G. Novel spider-web-like nanoporous networks based on jute cellulose nanowhiskers. Carbohydr Polym 2013; 92:2041-7. [DOI: 10.1016/j.carbpol.2012.11.085] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 11/23/2012] [Accepted: 11/26/2012] [Indexed: 10/27/2022]
|