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Zhang W, Wang T, Jiang Z, Gao X, Sun C, Zhang L. Green Preparation and Functional Properties of Reinforced All-Cellulose Membranes Made from Corn Straw. MEMBRANES 2024; 14:16. [PMID: 38248706 PMCID: PMC10821472 DOI: 10.3390/membranes14010016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024]
Abstract
In this study, all-cellulose nanocomposite (ACNC) was successfully prepared through a green and sustainable approach by using corn stalk as raw material, water as regeneration solvent, and recyclable two-component ionic liquid/DMSO as the solvent to dissolve cellulose. The morphology and structural properties of ACNC were determined by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction analysis, indicating homogeneity and good crystallinity. In addition, a comprehensive characterization of ACNC showed that CNF not only improved the thermal stability and mechanical characteristics of ACNC, but also significantly improved the oxygen barrier performance. The ACNC prepared in this work has a good appearance, smooth surface, and good optical transparency, which provides a potential application prospect for converting cellulose wastes such as corn straws into biodegradable packaging materials and electronic device encapsulation materials.
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Affiliation(s)
- Wentao Zhang
- College of Materials, Science and Technology, Beijing Forestry University, Beijing 100083, China; (W.Z.); (T.W.)
| | - Tianhao Wang
- College of Materials, Science and Technology, Beijing Forestry University, Beijing 100083, China; (W.Z.); (T.W.)
| | - Zeming Jiang
- College of Materials, Science and Technology, Beijing Forestry University, Beijing 100083, China; (W.Z.); (T.W.)
| | - Xin Gao
- College of Materials, Science and Technology, Beijing Forestry University, Beijing 100083, China; (W.Z.); (T.W.)
| | - Changxia Sun
- College of Science, Beijing Forestry University, Beijing 100083, China
| | - Liping Zhang
- College of Materials, Science and Technology, Beijing Forestry University, Beijing 100083, China; (W.Z.); (T.W.)
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2
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Jaafar MZ, Mohd Ridzuan FF, Mohamad Kassim MH, Abu F. The Role of Dissolution Time on the Properties of All-Cellulose Composites Obtained from Oil Palm Empty Fruit Bunch. Polymers (Basel) 2023; 15:polym15030691. [PMID: 36771992 PMCID: PMC9919761 DOI: 10.3390/polym15030691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
All-cellulose composite (ACC) films from oil palm empty fruit bunches (OPEFBs) were successfully fabricated through the surface selective dissolution of cellulose fibers in 8 wt% LiCl/DMAc via the solution casting method. The effect of dissolution time on the properties of the ACC films was assessed in the range of 5-45 min. The results showed that under the best conditions, there were sufficiently dissolved fiber surfaces that improved the interfacial adhesion while maintaining a sizable fraction of the fiber cores, acting as reinforcements for the material. The ACC films have the highest tensile strength and modulus of elasticity of up to 35.78 MPa and 2.63 GPa after 15 min of dissolution. Meanwhile, an X-ray diffraction analysis proved that cellulose I and II coexisted, which suggests that the crystallite size and degree of crystallinity of the ACC films had significantly declined. This is due to a change in the cellulose structure, which results in fewer voids and enhanced stress distribution in the matrix. Scanning electron microscopy revealed that the interfacial adhesion improved between the reinforcing fibers and matrices as the failure behavior of the film composite changed from fiber pullout to fiber breakage and matrix cracking. On the other hand, the thermal stability of the ACC film showed a declining trend as the dissolution time increased. Therefore, the best dissolution time to formulate the ACC film was 15 min, and the obtained ACC film is a promising material to replace synthetic polymers as a green composite.
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Affiliation(s)
- Mohd Zaim Jaafar
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Penang, Malaysia
| | - Farah Fazlina Mohd Ridzuan
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Penang, Malaysia
| | - Mohamad Haafiz Mohamad Kassim
- Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Penang, Malaysia
- Green Biopolymer, Coatings & Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Penang, Malaysia
- Correspondence: (M.H.M.K.); (F.A.)
| | - Falah Abu
- Department of Ecotechnology, School of Industrial Technology, Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM) Shah Alam, Shah Alam 40450, Selangor, Malaysia
- Smart Manufacturing Research Institute (SMRI), Universiti Teknologi MARA (UiTM) Shah Alam, Shah Alam 40450, Selangor, Malaysia
- Correspondence: (M.H.M.K.); (F.A.)
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3
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Uusi-Tarkka EK, Levanič J, Heräjärvi H, Kadi N, Skrifvars M, Haapala A. All-Cellulose Composite Laminates Made from Wood-Based Textiles: Effects of Process Conditions and the Addition of TEMPO-Oxidized Nanocellulose. Polymers (Basel) 2022; 14:polym14193959. [PMID: 36235906 PMCID: PMC9572299 DOI: 10.3390/polym14193959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 11/16/2022] Open
Abstract
All-cellulose composites (ACCs) are manufactured using only cellulose as a raw material. Biobased materials are more sustainable alternatives to the petroleum-based composites that are used in many technical and life-science applications. In this study, an aquatic NaOH-urea solvent system was used to produce sustainable ACCs from wood-based woven textiles with and without the addition of TEMPO-oxidized nanocellulose (at 1 wt.-%). This study investigated the effects of dissolution time, temperature during hot press, and the addition of TEMPO-oxidized nanocellulose on the mechanical and thermal properties of the composites. The results showed a significant change in the tensile properties of the layered textile composite at dissolution times of 30 s and 1 min, while ACC elongation was the highest after 2 and 5 min. Changes in hot press temperature from 70 °C to 150 °C had a significant effect: with an increase in hot press temperature, the tensile strength increased and the elongation at break decreased. Incorporating TEMPO-oxidized nanocellulose into the interface of textile layers before partial dissolution improved tensile strength and, even more markedly, the elongation at break. According to thermal analyses, textile-based ACCs have a higher storage modulus (0.6 GPa) and thermal stabilization than ACCs with nanocellulose additives. This study highlights the important roles of process conditions and raw material characteristics on the structure and properties of ACCs.
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Affiliation(s)
- Eija-Katriina Uusi-Tarkka
- School of Forest Sciences, Faculty of Science and Forestry, University of Eastern Finland, FI-80101 Joensuu, Finland
- Correspondence:
| | - Jaka Levanič
- Biotechnical Faculty, Department of Wood Science and Technology, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | | | - Nawar Kadi
- Department of Textile Technology, Faculty of Textiles, Engineering and Business, University of Borås, S-50190 Borås, Sweden
| | - Mikael Skrifvars
- Swedish Centre for Resource Recovery, Faculty of Textiles, Engineering and Business, University of Borås, S-50190 Borås, Sweden
| | - Antti Haapala
- School of Forest Sciences, Faculty of Science and Forestry, University of Eastern Finland, FI-80101 Joensuu, Finland
- FSCN Research Centre, Mid Sweden University, SE-85170 Sundsvall, Sweden
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4
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Ghalehno MD, Yousefi H. Green nanocomposite made from carboxymethyl cellulose reinforced with four types of cellulose nanomaterials of wheat straw. J Appl Polym Sci 2022. [DOI: 10.1002/app.52802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Hossein Yousefi
- Laboratory of Sustainable Nanomaterials, Department of Wood Engineering and Technology Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran
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5
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Tanpichai S, Boonmahitthisud A, Soykeabkaew N, Ongthip L. Review of the recent developments in all-cellulose nanocomposites: Properties and applications. Carbohydr Polym 2022; 286:119192. [DOI: 10.1016/j.carbpol.2022.119192] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 12/21/2022]
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6
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Tanpichai S, Phoothong F, Boonmahitthisud A. Superabsorbent cellulose-based hydrogels cross-liked with borax. Sci Rep 2022; 12:8920. [PMID: 35618796 PMCID: PMC9134984 DOI: 10.1038/s41598-022-12688-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/12/2022] [Indexed: 11/25/2022] Open
Abstract
Cellulose, the most abundant biopolymer on Earth, has been widely attracted owing to availability, intoxicity, and biodegradability. Environmentally friendly hydrogels were successfully prepared from water hyacinth-extracted cellulose using a dissolution approach with sodium hydroxide and urea, and sodium tetraborate decahydrate (borax) was used to generate cross-linking between hydroxyl groups of cellulose chains. The incorporation of borax could provide the superabsorbent feature into the cellulose hydrogels. The uncross-linked cellulose hydrogels had a swelling ratio of 325%, while the swelling ratio of the cross-linked hydrogels could achieve ~ 900%. With increasing borax concentrations, gel fraction of the cross-linked hydrogels increased considerably. Borax also formed char on cellulose surfaces and generated water with direct contact with flame, resulting in flame ignition and propagation delay. Moreover, the cross-linked cellulose-based hydrogels showed antibacterial activity for gram-positive bacteria (S. aureus). The superabsorbent cross-linked cellulose-based hydrogels prepared in this work could possibly be used for wound dressing, agricultural, and flame retardant coating applications.
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Affiliation(s)
- Supachok Tanpichai
- Learning Institute, King Mongkut's University of Technology Thonburi, Bangkok, 10140, Thailand
- Cellulose and Bio-Based Nanomaterials Research Group, King Mongkut's University of Technology Thonburi, Bangkok, 10140, Thailand
| | - Farin Phoothong
- Program of Petrochemical and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Anyaporn Boonmahitthisud
- Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Green Materials for Industrial Application Research Unit, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand.
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7
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Shao H, Zhang Y, Pan H, Jiang Y, Qi J, Xiao H, Zhang S, Lin T, Tu L, Xie J. Preparation of flexible and UV-blocking films from lignin-containing cellulose incorporated with tea polyphenol/citric acid. Int J Biol Macromol 2022; 207:917-926. [PMID: 35364193 DOI: 10.1016/j.ijbiomac.2022.03.183] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 03/16/2022] [Accepted: 03/26/2022] [Indexed: 12/14/2022]
Abstract
Lignin-containing bamboo cellulose, fractionated from a pilot-scale microwave liquefaction of bamboo was dissolved in tetrabutylammonium acetate/dimethyl sulfoxide (TBAA/DMSO) for the fabrication of highly flexible, transparent and UV-blocking films. Tea polyphenol (TP) or citric acid (CA) was added during the dissolving process in order to modify the film's properties. The results showed that the addition of TP obviously improved the elongation at break (triple that of the control) and UV-blocking ability of the films. Both the addition of TP and CA could increase the water contact angle of the films. The films incorporated with TP and CA were much more thermal stable than previously reported similar films. The proposed film fabrication mechanism revealed that stable hydrogen bonds formed between the lignin-cellulose matrix and TP/CA, resulting in the enhancement on the properties of the films. This present study showed that lignin-containing cellulose with the incorporation of TP/CA had great potential in the preparation of films in place of plastic.
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Affiliation(s)
- Huijuan Shao
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Yongjian Zhang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Hui Pan
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Yongze Jiang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jinqiu Qi
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Hui Xiao
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Shaobo Zhang
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Tiantian Lin
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Lihua Tu
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China
| | - Jiulong Xie
- College of Forestry, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
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8
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Hata Y, Serizawa T. Self-assembly of cellulose for creating green materials with tailor-made nanostructures. J Mater Chem B 2021; 9:3944-3966. [PMID: 33908581 DOI: 10.1039/d1tb00339a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Inspired by living systems, biomolecules have been employed in vitro as building blocks for creating advanced nanostructured materials. In regard to nucleic acids, peptides, and lipids, their self-assembly pathways and resulting assembled structures are mostly encoded in their molecular structures. On the other hand, outside of its chain length, cellulose, a polysaccharide, lacks structural diversity; therefore, it is challenging to direct this homopolymer to controllably assemble into ordered nanostructures. Nevertheless, the properties of cellulose assemblies are outstanding in terms of their robustness and inertness, and these assemblies are attractive for constructing versatile materials. In this review article, we summarize recent research progress on the self-assembly of cellulose and the applications of assembled cellulose materials, especially for biomedical use. Given that cellulose is the most abundant biopolymer on Earth, gaining control over cellulose assembly represents a promising route for producing green materials with tailor-made nanostructures.
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Affiliation(s)
- Yuuki Hata
- Division of Biomedical Engineering, National Defense Medical College Research Institute, 3-2 Namiki, Tokorozawa-shi, Saitama 359-8513, Japan.
| | - Takeshi Serizawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.
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9
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Ribeiro DCM, Rebelo RC, De Bon F, Coelho JFJ, Serra AC. Process Development for Flexible Films of Industrial Cellulose Pulp Using Superbase Ionic Liquids. Polymers (Basel) 2021; 13:polym13111767. [PMID: 34071224 PMCID: PMC8199285 DOI: 10.3390/polym13111767] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 11/16/2022] Open
Abstract
Due to environmental concerns, more attention has been given to the development of bio-based materials for substitution of fossil-based ones. Moreover, paper use is essential in daily routine and several applications of industrial pulp can be developed. In this study, transparent films were produced by industrial cellulose pulp solubilization in tetramethylguanidine based ionic liquids followed by its regeneration. Films were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), UV/Vis spectroscopy, proton nuclear magnetic resonance (1H-NMR), dynamic scanning calorimetry (DSC), thermal analysis (TG), and X-ray diffraction (XRD). Mechanical tests showed that films have a good elongation property, up to 50%, depending on ionic liquid incorporation. The influence of the conjugated acid and dissolution temperature on mechanical properties were evaluated. These results revealed the potential of this methodology for the preparation of new biobased films.
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10
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Xu H, Huang L, Xu M, Qi M, Yi T, Mo Q, Zhao H, Huang C, Wang S, Liu Y. Preparation and Properties of Cellulose-Based Films Regenerated from Waste Corrugated Cardboards Using [Amim]Cl/CaCl 2. ACS OMEGA 2020; 5:23743-23754. [PMID: 32984693 PMCID: PMC7513365 DOI: 10.1021/acsomega.0c02713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/26/2020] [Indexed: 06/03/2023]
Abstract
1-Ally-3-methylimidazolium chloride ([Amim]Cl), dimethyl sulfoxide (DMSO), and CaCl2 were selected to construct dissolution systems to produce value-added products from pretreatment of waste corrugated cardboards (P-WCCs). The dissolution behaviors of P-WCCs before and after ball milling were studied in different dissolution systems. The regenerated cellulose films were quickly and efficiently prepared via dissolving, regenerating, and pressurized drying. When 4 wt % waste corrugated cardboard was dissolved in [Amim]Cl for 4 h at 90 °C, the regenerated cellulose films featured tensile strengths as high as 59.00 MPa. Adding 40% DMSO and 2 wt % CaCl2 increased the tensile strength of the film to a maximum value of 85.86 MPa. This demonstrates that DMSO improves the ability of WCC to dissolve in ionic liquids; Ca2+ improves the tensile strength and thermal stability of the regenerated cellulose film but reduces its transparency. This work provides a new, simple, and highly efficient way to use WCCs for packaging and wrapping.
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Affiliation(s)
- Hao Xu
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Lijie Huang
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Mingzi Xu
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Minghui Qi
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Tan Yi
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Qi Mo
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Hanyu Zhao
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
| | - Chongxing Huang
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Shuangfei Wang
- Guangxi
Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Yang Liu
- College
of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
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11
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Regenerated cellulose films combined with glycerol and polyvinyl alcohol: Effect of moisture content on the physical properties. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105657] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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12
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Ma Y, Guo J, Zhao M, Gong Y, Qiao B. Effect of Coagulation Bath Temperature on Mechanical, Morphological, and Thermal Properties of Cellulose/Antarctic Krill Protein Composite Fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:5647-5653. [PMID: 32393029 DOI: 10.1021/acs.langmuir.0c01148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cellulose (C) and Antarctic krill protein (AKP) were dissolved at low temperature, and then C/AKP composite fibers were prepared by wet spinning. In this paper, the effect of coagulation bath temperature on the properties of C/AKP composite fibers were studied by FT-IR, XRD, DSC, and other tests. The results showed that, when the temperature of the coagulation bath increased from 5 to 25 °C, the intermolecular hydrogen bond content of the C/AKP composite fibers increased from 28.20% to 31.33%. When the coagulation bath temperature is 15 °C, the breaking strength of the composite fibers is 1.64cN/dtex, which is 12% higher than that of the composite fibers at room temperature. At this temperature, the crystallinity of the composite fibers is improved, the thermal stability is slightly improved, and the surface morphology is smoother. Inspiringly, when zinc sulfate is added to the coagulation bath, the formation process of the fibers is milder. Moreover, the C/AKP composite fibers have excellent antibacterial activity against Escherichia coli and Staphylococcus aureus.
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Affiliation(s)
- Yue Ma
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
| | - Jing Guo
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
- Liaoning Engineering Technology Research Centre of Function Fiber and its Composites, Dalian 116034, PR China
| | - Miao Zhao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
- Liaoning Engineering Technology Research Centre of Function Fiber and its Composites, Dalian 116034, PR China
| | - Yumei Gong
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
- Liaoning Engineering Technology Research Centre of Function Fiber and its Composites, Dalian 116034, PR China
| | - Boyang Qiao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, PR China
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13
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Wei QY, Lin H, Yang B, Li L, Zhang LQ, Huang HD, Zhong GJ, Xu L, Li ZM. Structure and Properties of All-Cellulose Composites Prepared by Controlling the Dissolution Temperature of a NaOH/Urea Solvent. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b07075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qiu-Yang Wei
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Hao Lin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Biao Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Lei Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Liang-Qing Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Hua-Dong Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Ling Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People’s Republic of China
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14
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Preparation of Microfibrillated Cellulose from Wood Pulp through Carbamate Modification and Colloid Milling. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10061977] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper studies a new convenient method to prepare microfibrillated cellulose from a bleached eucalyptus kraft pulp. First, the wood pulp was reacted with urea to produce cellulose carbamate (CC), and then the CC was treated with colloid mill in an acidic medium. A feasible preparation process for CC was to soak the pulp with the urea solution, and then the cellulose pulp was dewatered, dried, and reacted with urea at high temperatures above the melting point of urea. The Kjeldahl method, infrared spectroscopy, and solid 13C NMR were used to confirm the effectiveness of the reaction. On the basis of CC with the degree of substitution, DS = 0.123, the aqueous suspension with 2% content of CC at pH values of 1, 3, or 7 was severally ground by a colloid milling. After centrifugation, the nanocellulose carbamate fiber (CCNF) in the supernatant was obtained. X-ray diffraction showed that CC and CCNF had the same crystal form as the cellulose pulp, but the crystallinity decreased successively. The nanometer diameter of the CCNF fiber was observed with scanning electron microscopy. Results showed that when the pH value of the CC suspension decreased during the colloid milling, the crystallinity of the CCNF decreased along with the decrease of fiber diameter, and the zeta potential of the supernatant increased. This indicated that carbamate side groups of CC were protonated at low pHs and the cation repulsion between cellulose molecular chains enhanced the driving force of the pulp separation to CCNF. Interestingly, the thermal stability of CCNF is comparable to that of the original cellulose, and the enhancement effect of CCNF on starch can be clearly observed even at a relatively low loading of CCNF.
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15
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Cheng G, Wei Y, Zhou M, Cheng F, Lin Y, Zhu P. Robust Starch/Regenerated Cellulose All‐Polysaccharides Bilayer Films with Excellent Mechanical Properties. STARCH-STARKE 2020. [DOI: 10.1002/star.201900153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Geng Cheng
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
| | - Yu‐Jun Wei
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
| | - Mi Zhou
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
| | - Fei Cheng
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
| | - Yi Lin
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
| | - Pu‐Xin Zhu
- Textile Institute, College of Biomass Science and EngineeringSichuan University Chengdu 610065 China
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16
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Li Z, Li X, Ren J, Wu B, Luo Q, Liu X, Pei C. Robust All-Cellulose Nanofiber Composite from Stack-Up Bacterial Cellulose Hydrogels via Self-Aggregation Forces. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:2696-2701. [PMID: 32031789 DOI: 10.1021/acs.jafc.9b07671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
All-cellulose composites are usually prepared by removing impurities and using a surface-selective dissolution approach, which detract significantly from their environment-friendly properties. In this paper, we report an environment-friendly approach to fabricate all-cellulose nanofiber composites from stack-up bacterial cellulose (BC) hydrogels via self-aggregation forces of the hydrogen bond by water-based processing. Structural and mechanical properties of BC-laminated composites have been investigated. The results indicated that BC composites possess the structure of all nanofibers, a tensile strength of 116 MPa, and a storage modulus of 25 GPa. Additionally, the interfacial shear strength and tensile strength of piece-hot-press BC demonstrate the strong self-aggregation forces of BC nanofibers. Thus, BC-laminated composites will be attractive in structural material.
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Affiliation(s)
- Zhaoqian Li
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Xiaopeng Li
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Junming Ren
- School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Bo Wu
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Qingping Luo
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Xun Liu
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
| | - Chonghua Pei
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, People's Republic of China
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Zhang M, Chen S, Sheng N, Wang B, Yao J, Wu Z, Wang H. A strategy of tailoring polymorphs and nanostructures to construct self-reinforced nonswelling high-strength bacterial cellulose hydrogels. NANOSCALE 2019; 11:15347-15358. [PMID: 31386746 DOI: 10.1039/c9nr04462k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A serious decline in mechanical properties of polysaccharide hydrogels caused by swelling has always been a difficult problem which greatly limited their application especially in the medical field. Herein, nonswelling high-strength natural hydrogels based on self-reinforced double-crosslinked bacterial cellulose (SDBC) were prepared. Inspired by the concept of homogeneous composite materials, by regulating the ratio of LiOH/urea alkaline solvent, the aggregation structure and nanostructure of SDBC hydrogels can be controlled, thereby a unique nanofiber-network-self-reinforced (FNSR) structure was constructed and a new self-reinforcing mechanism is proposed. The prepared SDBC hydrogels have excellent mechanical properties at a high water content (>91%) for the combination of double-crosslinking and a unique FNSR structure, which can effectively prevent crack propagation and dissipate a large amount of energy. In particular, the compressive strength can reach 3.17 MPa which is 56 times that of native bacterial cellulose (BC). It is worth mentioning that no swelling occurs for the hydrogel, and the mechanical strength still remains in excess of 90% for 15 days in water, which is favorable for promising application in underwater equipment, implantable ionic devices, and tissue engineering scaffolds. This study also opens up a new horizon for the preparation of self-reinforced hydrogels.
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Affiliation(s)
- Minghao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China.
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