1
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Sun X, Jiang F. Periodate oxidation-mediated nanocelluloses: Preparation, functionalization, structural design, and applications. Carbohydr Polym 2024; 341:122305. [PMID: 38876711 DOI: 10.1016/j.carbpol.2024.122305] [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: 04/01/2024] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 06/16/2024]
Abstract
In recent years, the remarkable progress in nanotechnology has ignited considerable interest in investigating nanocelluloses, an environmentally friendly and sustainable nanomaterial derived from cellulosic feedstocks. Current research primarily focuses on the preparation and applications of nanocelluloses. However, to enhance the efficiency of nanofibrillation, reduce energy consumption, and expand nanocellulose applications, chemical pre-treatments of cellulose fibers have attracted substantial interest and extensive exploration. Various chemical pre-treatment methods yield nanocelluloses with diverse functional groups. Among these methods, periodate oxidation has garnered significant attention recently, due to the formation of dialdehyde cellulose derived nanocellulose, which exhibits great promise for further modification with various functional groups. This review seeks to provide a comprehensive and in-depth examination of periodate oxidation-mediated nanocelluloses (PONCs), including their preparation, functionalization, hierarchical structural design, and applications. We believe that PONCs stand as highly promising candidates for the development of novel nano-cellulosic materials.
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Affiliation(s)
- Xia Sun
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Feng Jiang
- Sustainable Functional Biomaterials Laboratory, Bioproducts Institute, Department of Wood Science, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
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2
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Zhang Y, Liu Y, Dong C, Li R, Zhang X, Wang T, Zhang K. Transparent, thermal stable, water resistant and high gas barrier films from cellulose nanocrystals prepared by reactive deep eutectic solvents. Int J Biol Macromol 2024; 276:134107. [PMID: 39084988 DOI: 10.1016/j.ijbiomac.2024.134107] [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: 02/26/2024] [Revised: 07/08/2024] [Accepted: 07/21/2024] [Indexed: 08/02/2024]
Abstract
Nanocellulose-based film, as a novel new type of film mainly made of nanosized cellulose, has demonstrated an ideal combination of renewability and enhanced or novel properties. Considerable efforts have been made to enhance its intrinsic properties or create new functions to expand its applications, such as in food packaging, water treatment or flexible electronics. In this paper, two different types of deep eutectic solvents (guanidine sulfamate-glycerol and guanidine sulfamate-choline chloride) were formulated and applied to prepare cellulose nanocrystals with dialdehyde cellulose (DAC). The effects of reaction conditions including time, temperature and cellulose-DES ratio on the grafting degree and yield were studied. After ultrasonication, two types of CNCs, with an average diameter of 3-5 nm and an average length of 140.7-204.2 nm, were obtained. The synthesized CNCs displayed an enhanced thermal stability compared to pristine cellulose. Moreover, highly transparent (light transmittance higher than 90 %) and water stable nanocellulose based films (a wet tensile strength of higher than 30 MPa after immersing in water for 24 h) were fabricated. Besides, the obtained films exhibited low oxygen transmission rate, showing a good potential application in food packaging.
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Affiliation(s)
- Yutong Zhang
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China
| | - Yun Liu
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Chaohong Dong
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Rong Li
- National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong 271000, China
| | - Xinlei Zhang
- National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong 271000, China
| | - Teng Wang
- National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong 271000, China
| | - Kaitao Zhang
- Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), College of Textiles and Clothing, Qingdao University, Ningxia Road, 308, Qingdao 266071, China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China; National Innovation Center of Advanced Dyeing & Finishing Technology, Tai'an, Shandong 271000, China.
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3
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Sajjadi M, Nasrollahzadeh M, Sattari MR, Ghafuri H, Jaleh B. Sulfonic acid functionalized cellulose-derived (nano)materials: Synthesis and application. Adv Colloid Interface Sci 2024; 328:103158. [PMID: 38718629 DOI: 10.1016/j.cis.2024.103158] [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: 08/08/2023] [Revised: 03/01/2024] [Accepted: 04/10/2024] [Indexed: 05/26/2024]
Abstract
The preparation/application of heterogeneous (nano)materials from natural resources has currently become increasingly fascinating for researchers. Cellulose is the most abundant renewable polysaccharide on earth. The unique physicochemical, structural, biological, and environmental properties of this natural biopolymer have led to its increased application in many fields. The more desirable features of cellulose-based (nano)materials such as biodegradability, renewability, biocompatibility, cost-effectiveness, simplicity of preparation, environmentally friendly nature, and widespread range of applications have converted them into promising compounds in medicine, catalysis, biofuel cells, and water/wastewater treatment processes. Functionalized cellulose-based (nano)materials containing sulfonic acid groups may prove to be one of the most promising sustainable bio(nano)materials of modern times in the field of cellulose science and (nano)technology owing to their intrinsic features, high crystallinity, high specific surface area, abundance, reactivity, and recyclability. In this review, the developments in the application of sulfonated cellulose-based (nano)materials containing sulfonic acid (-SO3H) groups in catalysis, water purification, biological/biomedical, environmental, and fuel cell applications have been reported. This review provides an overview of the methods used to chemically modify cellulose and/or cellulose derivatives in different forms, including nanocrystals, hydrogels, films/membranes, and (nano)composites/blends by introducing sulfonate groups on the cellulose backbone, focusing on diverse sulfonating agents utilized and substitution regioselectivity, and highlights their potential applications in different industries for the generation of alternative energies and products.
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Affiliation(s)
- Mohaddeseh Sajjadi
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | | | | | - Hossein Ghafuri
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Babak Jaleh
- Department of Physics, Faculty of Science, Bu-Ali Sina University, Hamedan 65174, Iran
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4
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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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5
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Ben Haj Fraj S, Ferlazzo A, El Haskouri J, Neri G, Baouab MHV. New fluorescent Schiff base modified nanocellulose-based chemosensors for the selective detection of Fe 3+, Zn 2+ and Cu 2+ in semi-aqueous media and application in seawater sample. Int J Biol Macromol 2023; 253:127762. [PMID: 37924906 DOI: 10.1016/j.ijbiomac.2023.127762] [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: 08/29/2023] [Revised: 10/17/2023] [Accepted: 10/27/2023] [Indexed: 11/06/2023]
Abstract
Stimulus-responsive fluorescent-modified biopolymers have received significant attention in the field of chemosensors. Herein, four new fluorescent dyes, namely, S1: (PDA-DANC), S2: (SAL-PDA-DANC), S3: (BrSAL-PDA-DANC) and S4: (ClSAL-PDA-DANC) have been successfully synthesized from 2,3-dialdehyde nanocellulose (DANC) for the detection of heavy metals. The microstructural and photophysical properties of nanocellulose (NC), microcrystalline cellulose (DANC) and the synthesized S1 to S4 dyes were investigated by FT-IR, SEM-EDX, XRD, TGA, DLS and photoluminescence. NC, obtained from conversion of MCC, shows an average size of 802.4 nm with 0.141 of polydispersity index (PdI), and a crystalline index (CI) of 82.40 % and crystallite size of 4.68 nm. The synthesized dyes present good fluorescent properties and have been therefore exploited for developing new probes for heavy metal ions detection. Remarkable "turn off" and/or "turn on" behaviors with Fe3+ and Cu2+ and with Zn2+ in DMF/water solution have been demonstrated, allowing the sensitive and selective determination of these heavy metal ions with a low limit of detection (LOD). Finally, the evaluation of the Fe3+ sensing in a real seawater sample was investigated.
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Affiliation(s)
- Sarah Ben Haj Fraj
- Research Unit Materials and Organic Synthesis (UR17ES31), Preparatory Institute for Engineering Studies of Monastir, University of Monastir, Tunisia; Instituto de Ciencias de Los Materiales de la Universitad de Valencia, Calle Catedratico José Beltran 2, 46980 Paterna, Valencia, Spain; Department of Engineering, University of Messina, C.da Di Dio, I-98166 Messina, Italy
| | - Angelo Ferlazzo
- Department of Chemical Sciences, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Jamal El Haskouri
- Instituto de Ciencias de Los Materiales de la Universitad de Valencia, Calle Catedratico José Beltran 2, 46980 Paterna, Valencia, Spain
| | - Giovanni Neri
- Department of Engineering, University of Messina, C.da Di Dio, I-98166 Messina, Italy
| | - Mohamed Hassen V Baouab
- Research Unit Materials and Organic Synthesis (UR17ES31), Preparatory Institute for Engineering Studies of Monastir, University of Monastir, Tunisia.
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6
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Nicolas M, Serghei A, Lucas C, Beyou E, Fumagalli M. Grafting of polyamines onto periodate oxidized nanocellulose, and its application to the fabrication of ionic nanopapers. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Subbotina E, Ram F, Dvinskikh SV, Berglund LA, Olsén P. Aqueous synthesis of highly functional, hydrophobic, and chemically recyclable cellulose nanomaterials through oxime ligation. Nat Commun 2022; 13:6924. [PMID: 36376337 PMCID: PMC9663568 DOI: 10.1038/s41467-022-34697-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 11/01/2022] [Indexed: 11/16/2022] Open
Abstract
Cellulose nanofibril (CNF) materials are candidates for the sustainable development of high mechanical performance nanomaterials. Due to inherent hydrophilicity and limited functionality range, most applications require chemical modification of CNF. However, targeted transformations directly on CNF are cumbersome due to the propensity of CNF to aggregate in non-aqueous solvents at high concentrations, complicating the choice of suitable reagents and requiring tedious separations of the final product. This work addresses this challenge by developing a general, entirely water-based, and experimentally simple methodology for functionalizing CNF, providing aliphatic, allylic, propargylic, azobenzylic, and substituted benzylic functional groups. The first step is NaIO4 oxidation to dialdehyde-CNF in the wet cake state, followed by oxime ligation with O-substituted hydroxylamines. The increased hydrolytic stability of oximes removes the need for reductive stabilization as often required for the analogous imines where aldehyde groups react with amines in water. Overall, the process provides a tailored degree of nanofibril functionalization (2-4.5 mmol/g) with the possible reversible detachment of the functionality under mildly acidic conditions, resulting in the reformation of dialdehyde CNF. The modified CNF materials were assessed for potential applications in green electronics and triboelectric nanogenerators.
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Affiliation(s)
- Elena Subbotina
- grid.5037.10000000121581746Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56, 100 44 Stockholm, Sweden
| | - Farsa Ram
- grid.5037.10000000121581746Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56, 100 44 Stockholm, Sweden
| | - Sergey V. Dvinskikh
- grid.5037.10000000121581746Department of Chemistry, KTH Royal Institute of Technology, Teknikringen 30, 100 44 Stockholm, Sweden
| | - Lars A. Berglund
- grid.5037.10000000121581746Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56, 100 44 Stockholm, Sweden
| | - Peter Olsén
- grid.5037.10000000121581746Department of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Teknikringen 56, 100 44 Stockholm, Sweden
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8
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El Miri N, Heggset EB, Wallsten S, Svedberg A, Syverud K, Norgren M. A comprehensive investigation on modified cellulose nanocrystals and their films properties. Int J Biol Macromol 2022; 219:998-1008. [PMID: 35963351 DOI: 10.1016/j.ijbiomac.2022.08.057] [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: 06/09/2022] [Revised: 07/27/2022] [Accepted: 08/09/2022] [Indexed: 11/05/2022]
Abstract
In this work, we aimed to tune cellulose nanocrystals (CNCs) properties by introducing different functional groups (aldehyde, carboxyl, silane, and ammonium groups) on the surface through different chemical modifications. These functional groups were obtained by combining: the periodate oxidation with TEMPO-oxidation, aminosylation or cationization. CNCs produced and their films were characterized to elucidate their performances. The results showed that the properties of obtained CNCs varied depending on the grafted functionalities on the surface. The results reveal that after each modification a colloidal stability is preserved. Interestingly, Periodate oxidation of cellulose nanocrystals results in film components that interact through intra- and intermolecular hemiacetals and lead to films with a tensile strength of 116 MPa compared to the pristine CNCs, in contrast the subsequent modifications led to lower tensile strength. Of note, remarkable thermal stability has been achieved after modifications reaching a maximum of 280 °C. The oxygen barrier properties of the films after modifications varied between 0.48 and 0.54 cm3μm/(m2d*kPa) at 50 % RH.
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Affiliation(s)
- Nassima El Miri
- FSCN, Surface and Colloid Engineering, Mid Sweden University, SE-851 70 Sundsvall, Sweden.
| | | | - Sara Wallsten
- MoRe Research Örnsköldsvik AB, Hörneborgsvägen 10, SE-892 50 Domsjö, Sweden
| | - Anna Svedberg
- MoRe Research Örnsköldsvik AB, Hörneborgsvägen 10, SE-892 50 Domsjö, Sweden
| | | | - Magnus Norgren
- FSCN, Surface and Colloid Engineering, Mid Sweden University, SE-851 70 Sundsvall, Sweden
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9
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Pradeep HK, Patel DH, Onkarappa HS, Pratiksha CC, Prasanna GD. Role of nanocellulose in industrial and pharmaceutical sectors - A review. Int J Biol Macromol 2022; 207:1038-1047. [PMID: 35364203 DOI: 10.1016/j.ijbiomac.2022.03.171] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 02/01/2023]
Abstract
Lignocellulosic biomass from agricultural residues serves as the critical component to replace synthetic polymeric materials in the coming future. Agricultural residues can be used to obtain cellulose by delignification followed by bleaching. Further, cellulose is converted into nanocellulose by various methods. Nanocellulose is used in multiple pharmaceutical applications as a polymer in hydrogels, transdermal drug delivery systems, aerogels, wound healing dressing materials, as superdisintegrants in fast dissolving tablets, emulgel, microparticles, gels, foams, thickening agents, stabilizers, cosmetics, medical implants, tissue engineering, liposomes, food and composites, etc. This review provides detailed knowledge about the nature of nanocellulose regarding its high surface area, high polymerization, loading, and binding capacity of hydrophilic and hydrophobic active pharmaceutical ingredients and significance of various applications of nanocellulose. Biocompatible and non-toxic, it makes it an ideal material for applications in the biomedical field. A significant advantage is a biocompatibility, which is non-toxic for many biomedical applications.
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Affiliation(s)
- H K Pradeep
- Department of Pharmaceutics, Parul Institute of Pharmacy and Research, Parul University, Vadodara, Gujarat, India.
| | - Dipti H Patel
- Department of Pharmaceutics, Parul Institute of Pharmacy and Research, Parul University, Vadodara, Gujarat, India
| | - H S Onkarappa
- Department of Chemistry, GM Institute of Technology, Davanagere, Karnataka, India
| | - C C Pratiksha
- Department of Pharmaceutics, GM Institute of Pharmaceutical Sciences and Research, Davanagere, Karnataka, India
| | - G D Prasanna
- Department of Physics, Davangere University, Davanagere, Karnataka, India
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Hajiali F, Jin T, Yang G, Santos M, Lam E, Moores A. Mechanochemical Transformations of Biomass into Functional Materials. CHEMSUSCHEM 2022; 15:e202102535. [PMID: 35137539 DOI: 10.1002/cssc.202102535] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Biomass is one of the promising alternatives to petroleum-derived materials and plays a major role in our fight against climate change by providing renewable sources of chemicals and materials. Owing to its chemical and structural complexity, the transformation of biomass into value-added products requires a profound understanding of its composition at different scales and innovative methods such as combining physical and chemical processes. In this context, the use of mechanochemistry in biomass valorization is currently growing owing to its potentials as an efficient, sustainable, and environmentally friendly approach. This review highlights the latest advances in the transformation of biomass (i. e., chitin, cellulose, hemicellulose, lignin, and starch) to functional materials using mechanochemical-assisted methods. We focused here on the methodology of biomass processing, influencing factors, and resulting properties with an emphasis on achieving functional materials rather than breaking down the biopolymer chains into smaller molecules. Opportunities and limitations associated this methodology were discussed accordingly for future directions.
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Affiliation(s)
- Faezeh Hajiali
- Centre in Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada
| | - Tony Jin
- Centre in Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada
| | - Galen Yang
- Centre in Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada
| | - Madison Santos
- Department of Bioengineering, McGill University, 3480 University St., Montreal, Quebec, H3A 0E9, Canada
| | - Edmond Lam
- Centre in Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada
- Aquatic and Crop Resource Development Research Centre, National Research Council of Canada, 6100 Royalmount Avenue, Montreal, Quebec, H4P 2R2, Canada
| | - Audrey Moores
- Centre in Green Chemistry and Catalysis, Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada
- Department of Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, H3A 0 C5, Canada
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11
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Water-resistant nanopaper with tunable water barrier and mechanical properties from assembled complexes of oppositely charged cellulosic nanomaterials. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Gao C, Wang S, Liu B, Yao S, Dai Y, Zhou L, Qin C, Fatehi P. Sustainable Chitosan-Dialdehyde Cellulose Nanocrystal Film. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5851. [PMID: 34640253 PMCID: PMC8510260 DOI: 10.3390/ma14195851] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/29/2021] [Accepted: 09/29/2021] [Indexed: 01/20/2023]
Abstract
In this study, we incorporated 2,3-dialdehyde nanocrystalline cellulose (DANC) into chitosan as a reinforcing agent and manufactured biodegradable films with enhanced gas barrier properties. DANC generated via periodate oxidation of cellulose nanocrystal (CNC) was blended at various concentrations with chitosan, and bionanocomposite films were prepared via casting and characterized systematically. The results showed that DANC developed Schiff based bond with chitosan that improved its properties significantly. The addition of DANC dramatically improved the gas barrier performance of the composite film, with water vapor permeability (WVP) value decreasing from 62.94 g·mm·m-2·atm-1·day-1 to 27.97 g·mm·m-2·atm-1·day-1 and oxygen permeability (OP) value decreasing from 0.14 cm3·mm·m-2·day-1·atm-1 to 0.026 cm3·mm·m-2·day-1·atm-1. Meanwhile, the maximum decomposition temperature (Tdmax) of the film increased from 286 °C to 354 °C, and the tensile strength of the film was increased from 23.60 MPa to 41.12 MPa when incorporating 25 wt.% of DANC. In addition, the chitosan/DANC (75/25, wt/wt) films exhibited superior thermal stability, gas barrier, and mechanical strength compared to the chitosan/CNC (75/25, wt/wt) film. These results confirm that the DANC and chitosan induced films with improved gas barrier, mechanical, and thermal properties for possible use in film packaging.
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Affiliation(s)
- Cong Gao
- Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (S.W.); (B.L.); (S.Y.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
- Chemical Engineering Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada;
| | - Shuo Wang
- Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (S.W.); (B.L.); (S.Y.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Baojie Liu
- Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (S.W.); (B.L.); (S.Y.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Shuangquan Yao
- Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (S.W.); (B.L.); (S.Y.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Yi Dai
- School of Chemical Engineering, Guizhou Minzu University, Guiyang 550025, China;
| | - Long Zhou
- Chemical Engineering Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada;
| | - Chengrong Qin
- Department of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, China; (C.G.); (S.W.); (B.L.); (S.Y.)
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
| | - Pedram Fatehi
- Chemical Engineering Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada;
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13
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Sirviö JA, Lakovaara M. A Fast Dissolution Pretreatment to Produce Strong Regenerated Cellulose Nanofibers via Mechanical Disintegration. Biomacromolecules 2021; 22:3366-3376. [PMID: 34232615 PMCID: PMC8382242 DOI: 10.1021/acs.biomac.1c00466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/21/2021] [Indexed: 11/29/2022]
Abstract
This study investigates a fast dissolution and regeneration pretreatment to produce regenerated cellulose nanofibers (RCNFs) via mechanical disintegration. Two cellulose pulps, namely, birch and dissolving pulps, with degree of polymerizations of 1800 and 3600, respectively, were rapidly dissolved in dimethyl sulfoxide (DMSO) by using tetraethylammonium hydroxide (TEAOH) as aqueous electrolyte at room temperature. When TEAOH (35 wt % in water) was added to the pulp-DMSO dispersion (pulp:DMSO and TEAOH:DMSO weight ratios of 1:90 and 1:9, respectively), 95% of the dissolving pulp and 85% of the birch pulp fibers dissolved almost immediately. Addition of water caused the regeneration of cellulose without any chemical modification and only a minor decrease of DP, whereas the crystallinity structure of cellulose transformed from cellulose I to cellulose II. The regenerated cellulose could then be mechanically disintegrated into nanosized fibers with only a few passes through a microfluidizer, and RCNF showed fibrous structure. The specific tensile strength of the film produced from both RCNFs exceeded 100 kN·m/kg, and overall mechanical properties of RCNF produced from birch pulp were in line with reference CNF produced by using extensive mechanical disintegration. Although the thermal stability of RCNFs was slightly lower compared to their corresponding original cellulose pulp, the onset temperature of degradation of RCNFs was over 270 °C.
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Affiliation(s)
- Juho Antti Sirviö
- Fibre and Particle Engineering Research
Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Matias Lakovaara
- Fibre and Particle Engineering Research
Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
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14
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Yang Y, Lu YT, Zeng K, Heinze T, Groth T, Zhang K. Recent Progress on Cellulose-Based Ionic Compounds for Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2000717. [PMID: 32270900 DOI: 10.1002/adma.202000717] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 02/25/2020] [Accepted: 02/26/2020] [Indexed: 05/06/2023]
Abstract
Glycans play important roles in all major kingdoms of organisms, such as archea, bacteria, fungi, plants, and animals. Cellulose, the most abundant polysaccharide on the Earth, plays a predominant role for mechanical stability in plants, and finds a plethora of applications by humans. Beyond traditional use, biomedical application of cellulose becomes feasible with advances of soluble cellulose derivatives with diverse functional moieties along the backbone and modified nanocellulose with versatile functional groups on the surface due to the native features of cellulose as both cellulose chains and supramolecular ordered domains as extractable nanocellulose. With the focus on ionic cellulose-based compounds involving both these groups primarily for biomedical applications, a brief introduction about glycoscience and especially native biologically active glycosaminoglycans with specific biomedical application areas on humans is given, which inspires further development of bioactive compounds from glycans. Then, both polymeric cellulose derivatives and nanocellulose-based compounds synthesized as versatile biomaterials for a large variety of biomedical applications, such as for wound dressings, controlled release, encapsulation of cells and enzymes, and tissue engineering, are separately described, regarding the diverse routes of synthesis and the established and suggested applications for these highly interesting materials.
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Affiliation(s)
- Yang Yang
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Wushan Road 381, Guangzhou, 510640, P. R. China
| | - Yi-Tung Lu
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120, Germany
| | - Kui Zeng
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
| | - Thomas Heinze
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University of Jena, Centre of Excellence for Polysaccharide Research, Humboldt Straße 10, Jena, D-07743, Germany
| | - Thomas Groth
- Department Biomedical Materials, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Heinrich-Damerow-Strasse 4, Halle (Saale), 06120, Germany
- Interdisciplinary Center of Materials Science, Martin Luther University Halle-Wittenberg, Halle (Saale), 06120, Germany
- Laboratory of Biomedical Nanotechnologies, Institute of Bionic Technologies and Engineering, I. M. Sechenov First Moscow State University, Trubetskaya Street 8, 119991, Moscow, Russian Federation
| | - Kai Zhang
- Wood Technology and Wood Chemistry, University of Goettingen, Büsgenweg 4, Göttingen, 37077, Germany
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15
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Promising grafting strategies on cellulosic backbone through radical polymerization processes – A review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110448] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Sirviö JA, Kantola AM, Komulainen S, Filonenko S. Aqueous Modification of Chitosan with Itaconic Acid to Produce Strong Oxygen Barrier Film. Biomacromolecules 2021; 22:2119-2128. [PMID: 33913322 PMCID: PMC8382240 DOI: 10.1021/acs.biomac.1c00216] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this study, the chemical modification of chitosan using itaconic acid as a natural-based unsaturated dicarboxylic acid was investigated. In an aqueous environment, the amine group of chitosan reacts with itaconic acid to produce a chitosan derivative with pyrrolidone-4-carboxylic acid group. On the basis of the elemental analysis, 15% of the amine groups of chitosan reacted, thus creating modified chitosan with amine and carboxylic acid functionalities. Due to the presence of amine and carboxylic acid groups, the surface charge properties of the chitosan were notably altered after itaconic acid modification. In an aqueous solution, the modified chitosan exhibited zwitterionic properties, being cationic at low pH and turning anionic when the pH was increased over 6.5, whereas the original chitosan remained cationic until pH 9. Furthermore, it was demostrated that the modified chitosan was suitable for the preparation of a self-standing film with similarly high transparency but notably higher mechanical strength and oxygen barrier properties compared to a film made from the original chitosan. In addition, the thermal stability of the modified chitosan film was higher than that of the original chitosan film, and the modified chitosan exhibited flame-retardant properties.
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Affiliation(s)
- Juho Antti Sirviö
- Fibre and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, FI-90014 Oulu, Finland
| | - Anu M Kantola
- NMR Research Unit, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - Sanna Komulainen
- NMR Research Unit, University of Oulu, P.O. Box 3000, FI-90014 Oulu, Finland
| | - Svitlana Filonenko
- Max Planck Institute of Colloids and Interfaces, Research Campus Golm, 14424 Potsdam, Germany
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17
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Purkayastha S, Saha S, Ghosh AK. Influence of green extraction process of nano fibrillated cellulose using subcritical water/
CO
2
on its properties and development of its bio composite. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25644] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Srijita Purkayastha
- Department of Materials Science and Engineering Indian Institute of Technology Delhi New Delhi India
| | - Sampa Saha
- Department of Materials Science and Engineering Indian Institute of Technology Delhi New Delhi India
| | - Anup K. Ghosh
- Department of Materials Science and Engineering Indian Institute of Technology Delhi New Delhi India
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18
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Hasan N, Rahman L, Kim SH, Cao J, Arjuna A, Lallo S, Jhun BH, Yoo JW. Recent advances of nanocellulose in drug delivery systems. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2020. [DOI: 10.1007/s40005-020-00499-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Cai Y, Geng L, Chen S, Shi S, Hsiao BS, Peng X. Hierarchical Assembly of Nanocellulose into Filaments by Flow-Assisted Alignment and Interfacial Complexation: Conquering the Conflicts between Strength and Toughness. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32090-32098. [PMID: 32551523 DOI: 10.1021/acsami.0c04504] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Filaments comprising solely cellulose nanofibrils (CNFs) have been fabricated by flow-assisted assembling, where the strength can be improved greatly with the sacrifice of toughness. Inspired by the architecture of natural nacre and plant cell wall, the combined technique of convergent microfluidic spinning and in situ interfacial complexation between CNF and chitosan molecules was used to construct the filaments with hierarchical assembly of highly oriented CNFs locked by chitosan complexes, showing simultaneous enhancements of strength and toughness. In specific, the best performing filament exhibited a toughness of 88.9 kJ/m3 and a tensile strength of 1289 MPa because of the strong interfacial complexation interactions between CNFs and chitosan molecules. The tensile strength was further raised to 1627 MPa when the filaments were cross-linked synergistically by using Ca2+, surpassing the reported values in the literature. Molecular dynamics simulations revealed the possible fracture mechanism of the filaments under tension. With excellent mechanical performance and biocompatibility, the resulting CNF/chitosan filament system showed a promising application potential as nonabsorbable surgical sutures. The demonstrated spinning technology also offered a new avenue for the fabrication of high-performance filaments.
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Affiliation(s)
- Yuhua Cai
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350108, China
| | - Lihong Geng
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350108, China
| | - Song Chen
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350108, China
| | - Shuo Shi
- Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China
| | - Benjamin S Hsiao
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Xiangfang Peng
- Key Laboratory of Polymer Materials and Products of Universities in Fujian, Department of Materials Science and Engineering, Fujian University of Technology, Fuzhou, Fujian 350108, China
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20
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Rheology of aqueous dispersions of Laponite and TEMPO-oxidized nanofibrillated cellulose. Carbohydr Polym 2020; 240:116330. [DOI: 10.1016/j.carbpol.2020.116330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/15/2020] [Accepted: 04/15/2020] [Indexed: 12/31/2022]
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21
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Hujaya SD, Manninen A, Kling K, Wagner JB, Vainio SJ, Liimatainen H. Self-assembled nanofibrils from RGD-functionalized cellulose nanocrystals to improve the performance of PEI/DNA polyplexes. J Colloid Interface Sci 2019; 553:71-82. [DOI: 10.1016/j.jcis.2019.06.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 02/01/2023]
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22
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Potential of di-aldehyde cellulose for sustained release of oxytetracycline: A pharmacokinetic study. Int J Biol Macromol 2019; 136:97-105. [PMID: 31185241 DOI: 10.1016/j.ijbiomac.2019.06.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/07/2019] [Accepted: 06/07/2019] [Indexed: 11/20/2022]
Abstract
This study focused on the in-vivo sustained release of oxytetracycline (OTC) loaded on di-aldehyde cellulose (DAC). The periodate oxidation method was used for the synthesis of DAC. The prepared DAC-OTC material was characterized by different techniques such as Scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Transmission electron microscopy (TEM) and particle size analyzer. The pharmacokinetic studies were performed on DAC-OTC composite system and commercial tablet (COTA). The results of pharmacokinetic studies demonstrated that DAC-OTC exhibited higher area under the curve (AUC) (482.8 μghmL-1) as compared to COTA (90.72 μghmL-1). DAC-OTC composite system has double compartment pattern with improvement in mean residing time (MRT) and area under moment curve (AUMC0-∞) than the commercial tablet (2.8 and 15.13 folds higher, respectively). Swelling index of DAC-OTC at different pH and pKa of OTC release imply that controlled in-vivo release in DAC-OTC composite system could be due to the simultaneous occurrence of the covalent and hydrogen bond between OTC and di-aldehyde cellulose. These results indicate that di-aldehyde cellulose may improve the in-vivo bioavailability of OTC.
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23
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Sirviö JA, Visanko M. Highly Transparent Nanocomposites Based on Poly(vinyl alcohol) and Sulfated UV-Absorbing Wood Nanofibers. Biomacromolecules 2019; 20:2413-2420. [PMID: 31030511 PMCID: PMC6750639 DOI: 10.1021/acs.biomac.9b00427] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/26/2019] [Indexed: 11/29/2022]
Abstract
Unbleached lignocellulose fibers were studied for the fabrication of wood-based UV-absorbing nanofibers and were used to produce transparent nanocomposites. Groundwood pulp (GWP) and sawdust were selected as raw materials thanks to their low processing degree of fibers and abundant availability as a low-value industrial side stream. Both materials were first sulfated using a reactive deep eutectic solvent. The sulfated wood and sawdust nanofibers (SWNFs and SSDNFs, respectively) were fabricated using a mild mechanical disintegration approach. As a reference material, sulfated cellulose nanofibers (SCNFs) were obtained from bleached cellulose pulp. Our results showed that both GWP and sawdust exhibited similar reactivity compared with bleached cellulose pulp, whereas the yields of sulfated lignin-containing pulps were notably higher. The diameters of both SWNFs and SSDNFs were approximately 3 nm, which was similar to those of the SCNFs. When 10 wt % of lignin-containing nanofibers were mixed together with poly(vinyl alcohol), the fabrication of nanocomposites with only a minimal decrease in transparency in the visible light spectrum was achieved. Transmission in the UV region, on the other hand, was significantly reduced by SWNFs and SSDNFs, whereas SCNFs had only a minor UV-absorbing property. Although the reinforcing effect of lignin-containing nanofibers was lower compared with that of SCNFs, it was comparable with those of other UV-absorbing additives reported in the literature. Overall, the wood-based UV-absorbing nanofibers could have a valuable use in optical applications such as lenses and optoelectronics.
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Affiliation(s)
- Juho Antti Sirviö
- Fibre and Particle Engineering Research
Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Miikka Visanko
- Fibre and Particle Engineering Research
Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
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24
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Bacakova L, Pajorova J, Bacakova M, Skogberg A, Kallio P, Kolarova K, Svorcik V. Versatile Application of Nanocellulose: From Industry to Skin Tissue Engineering and Wound Healing. NANOMATERIALS 2019; 9:nano9020164. [PMID: 30699947 PMCID: PMC6410160 DOI: 10.3390/nano9020164] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/08/2019] [Accepted: 01/24/2019] [Indexed: 12/29/2022]
Abstract
Nanocellulose is cellulose in the form of nanostructures, i.e., features not exceeding 100 nm at least in one dimension. These nanostructures include nanofibrils, found in bacterial cellulose; nanofibers, present particularly in electrospun matrices; and nanowhiskers, nanocrystals, nanorods, and nanoballs. These structures can be further assembled into bigger two-dimensional (2D) and three-dimensional (3D) nano-, micro-, and macro-structures, such as nanoplatelets, membranes, films, microparticles, and porous macroscopic matrices. There are four main sources of nanocellulose: bacteria (Gluconacetobacter), plants (trees, shrubs, herbs), algae (Cladophora), and animals (Tunicata). Nanocellulose has emerged for a wide range of industrial, technology, and biomedical applications, namely for adsorption, ultrafiltration, packaging, conservation of historical artifacts, thermal insulation and fire retardation, energy extraction and storage, acoustics, sensorics, controlled drug delivery, and particularly for tissue engineering. Nanocellulose is promising for use in scaffolds for engineering of blood vessels, neural tissue, bone, cartilage, liver, adipose tissue, urethra and dura mater, for repairing connective tissue and congenital heart defects, and for constructing contact lenses and protective barriers. This review is focused on applications of nanocellulose in skin tissue engineering and wound healing as a scaffold for cell growth, for delivering cells into wounds, and as a material for advanced wound dressings coupled with drug delivery, transparency and sensorics. Potential cytotoxicity and immunogenicity of nanocellulose are also discussed.
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Affiliation(s)
- Lucie Bacakova
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4-Krc, Czech Republic.
| | - Julia Pajorova
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4-Krc, Czech Republic.
| | - Marketa Bacakova
- Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4-Krc, Czech Republic.
| | - Anne Skogberg
- BioMediTech Institute and Faculty of Medicine and Health Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland.
| | - Pasi Kallio
- BioMediTech Institute and Faculty of Medicine and Health Technology, Tampere University, Korkeakoulunkatu 3, 33720 Tampere, Finland.
| | - Katerina Kolarova
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6-Dejvice, Czech Republic.
| | - Vaclav Svorcik
- Department of Solid State Engineering, University of Chemistry and Technology Prague, Technicka 5, 166 28 Prague 6-Dejvice, Czech Republic.
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25
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26
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Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials. INT J POLYM SCI 2018. [DOI: 10.1155/2018/7923068] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical engineering, food, sensor, packaging, and so on, there are many studies conducted on CNCs and CNFs. In this review, various methods of preparation of CNCs and CNFs are summarized, including mechanical, chemical, and biological methods. The methods of pretreatment of cellulose are described in view of the benefits to fibrillation.
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27
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Geng L, Mittal N, Zhan C, Ansari F, Sharma PR, Peng X, Hsiao BS, Söderberg LD. Understanding the Mechanistic Behavior of Highly Charged Cellulose Nanofibers in Aqueous Systems. Macromolecules 2018. [DOI: 10.1021/acs.macromol.7b02642] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Lihong Geng
- National
Engineer Research Center of Novel Equipment for Polymer Processing,
the Key Laboratory of Polymer Processing Engineering of Ministry of
Education, South China University of Technology, Guangzhou 510640, P. R. China
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | | | - Chengbo Zhan
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Farhan Ansari
- Department
of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Priyanka R. Sharma
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Xiangfang Peng
- National
Engineer Research Center of Novel Equipment for Polymer Processing,
the Key Laboratory of Polymer Processing Engineering of Ministry of
Education, South China University of Technology, Guangzhou 510640, P. R. China
| | - Benjamin S. Hsiao
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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28
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Luo J, Semenikhin N, Chang H, Moon RJ, Kumar S. Post-sulfonation of cellulose nanofibrils with a one-step reaction to improve dispersibility. Carbohydr Polym 2017; 181:247-255. [PMID: 29253969 DOI: 10.1016/j.carbpol.2017.10.077] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/06/2017] [Accepted: 10/22/2017] [Indexed: 11/19/2022]
Abstract
Cellulose nanofibrils (CNF) were sulfonated and the dispersion quality was compared to unfunctionalized and 2,2,6,6-tetramethylpiperdine-1-oxyl radical (TEMPO) post-oxidation treatment of existing CNF (mechanically fibrillated pulp). A post-sulfonation treatment on existing CNF in chlorosulfonic acid and dimethylformamide (DMF) resulted in sulfonated CNF that retained a fibril-like morphology. There was a small decrease in the cellulose crystallinity index for the sulfonated CNF, but this was much lower than the reported regioselective oxidative bisulfite pretreatment method used to make sulfonated CNF. The current approach was extremely quick, and 5min of reaction time was sufficient to result in significant improvements in dispersibility compared to unfunctionalized CNF. The sulfonated CNF and TEMPO oxidized CNF had better dispersibility compared to the unfunctionalized CNF when dispersed in DMF and water, and in many cases the sulfonated CNF had better dispersibility than the TEMPO CNF. It was found that when CNF was dispersed in DMF the TEMPO CNF formed carboxyl dimethylammonium groups, while the sulfonated CNF formed formate groups.
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Affiliation(s)
- Jeffrey Luo
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Renewable Bioproducts Institute, Georgia Institute of Technology, Atlanta, GA, USA.
| | - Nikolay Semenikhin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Renewable Bioproducts Institute, Georgia Institute of Technology, Atlanta, GA, USA.
| | - Huibin Chang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Renewable Bioproducts Institute, Georgia Institute of Technology, Atlanta, GA, USA.
| | - Robert J Moon
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Renewable Bioproducts Institute, Georgia Institute of Technology, Atlanta, GA, USA; The Forest Products Laboratory, US Forest Service, Madison, WI 53726, USA.
| | - Satish Kumar
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Renewable Bioproducts Institute, Georgia Institute of Technology, Atlanta, GA, USA.
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29
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Aspects on nanofibrillated cellulose (NFC) processing, rheology and NFC-film properties. Curr Opin Colloid Interface Sci 2017. [DOI: 10.1016/j.cocis.2017.02.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Li P, Sirviö JA, Haapala A, Liimatainen H. Cellulose Nanofibrils from Nonderivatizing Urea-Based Deep Eutectic Solvent Pretreatments. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2846-2855. [PMID: 27997111 DOI: 10.1021/acsami.6b13625] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Deep eutectic solvents (DESs) are a fairly new class of green solvents applied in various fields. This study investigates urea-based DES systems as novel pretreatments for cellulose nanofibril production. In the experiments, deep eutectic systems having urea and ammonium thiocyanate or guanidine hydrochloride as a second component were formed at 100 °C and then applied to disintegrate wood-derived cellulose fibers. The DES-pretreated fibers were nanofibrillated into three different levels of mechanical treatments with a microfluidizer, and their properties were analyzed. Moreover, nanofibril films were fabricated by solvent casting method. Both DES systems were able to loosen and swell the cellulose fiber structure as indicated by the increase in the lateral dimension of the fibers. Nonpretreated birch cellulose fibers had difficulties in mechanical nanofibrillation as clogging of the chamber occurred often. However, cellulose nanofibrils with widths ranging from 13.0 to 19.3 nm were successfully fabricated from DES-pretreated fibers with both systems. Translucent nanofibril films generated from DES-pretreated cellulose nanofibrils had good thermal stability and mechanical properties, with tensile strengths of approximately 135-189 MPa and elastic modulus of 6.4-7.7 GPa. Consequently, both urea-based DESs showed a high potential as environmentally friendly solvents in the manufacture of cellulose nanofibrils.
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Affiliation(s)
- Panpan Li
- Fibre and Particle Engineering Research Unit, University of Oulu , P. O. Box 4300, FI-90014 Oulu, Finland
| | - Juho Antti Sirviö
- Fibre and Particle Engineering Research Unit, University of Oulu , P. O. Box 4300, FI-90014 Oulu, Finland
| | - Antti Haapala
- Wood Materials Science, University of Eastern Finland , P. O. Box 111, FI-80101 Joensuu, Finland
| | - Henrikki Liimatainen
- Fibre and Particle Engineering Research Unit, University of Oulu , P. O. Box 4300, FI-90014 Oulu, Finland
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31
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Huang F, Wu X, Yu Y, Lu Y, Chen Q. Acylation of cellulose nanocrystals with acids/trifluoroacetic anhydride and properties of films from esters of CNCs. Carbohydr Polym 2017; 155:525-534. [DOI: 10.1016/j.carbpol.2016.09.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/17/2016] [Accepted: 09/03/2016] [Indexed: 10/21/2022]
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32
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Guo J, Fang W, Welle A, Feng W, Filpponen I, Rojas OJ, Levkin PA. Superhydrophobic and Slippery Lubricant-Infused Flexible Transparent Nanocellulose Films by Photoinduced Thiol-Ene Functionalization. ACS APPLIED MATERIALS & INTERFACES 2016; 8:34115-34122. [PMID: 27960438 DOI: 10.1021/acsami.6b11741] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Films comprising nanofibrillated cellulose (NFC) are suitable substrates for flexible devices in analytical, sensor, diagnostic, and display technologies. However, some major challenges in such developments include their high moisture sensitivity and the complexity of current methods available for functionalization and patterning. In this work, we present a facile process for tailoring the surface wettability and functionality of NFC films by a fast and versatile approach. First, the NFC films were coated with a layer of reactive nanoporous silicone nanofilament by polycondensation of trichlorovinylsilane (TCVS). The TCVS afforded reactive vinyl groups, thereby enabling simple UV-induced functionalization of NFC films with various thiol-containing molecules via the photo "click" thiol-ene reaction. Modification with perfluoroalkyl thiols resulted in robust superhydrophobic surfaces, which could then be further transformed into transparent slippery lubricant-infused NFC films that displayed repellency against both aqueous and organic liquids with surface tensions as low as 18 mN·m-1. Finally, transparent and flexible NFC films incorporated hydrophilic micropatterns by modification with OH, NH2, or COOH surface groups, enabling space-resolved superhydrophobic-hydrophilic domains. Flexibility, transparency, patternability, and perfect superhydrophobicity of the produced nanocellulose substrates warrants their application in biosensing, display protection, and biomedical and diagnostics devices.
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Affiliation(s)
| | | | - Alexander Welle
- Institute of Functional Interfaces, Karlsruhe Institute of Technology and Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology , 76021 Karlsruhe, Germany
| | - Wenqian Feng
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT) , 76344 Eggenstein-Leopoldshafen, Germany
| | | | | | - Pavel A Levkin
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology (KIT) , 76344 Eggenstein-Leopoldshafen, Germany
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT) , 76021 Karlsruhe, Germany
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Nechyporchuk O, Belgacem MN, Pignon F. Current Progress in Rheology of Cellulose Nanofibril Suspensions. Biomacromolecules 2016; 17:2311-20. [DOI: 10.1021/acs.biomac.6b00668] [Citation(s) in RCA: 158] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Oleksandr Nechyporchuk
- Department
of Chemistry and Chemical Engineering, Division of Applied Chemistry, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Mohamed Naceur Belgacem
- Laboratory
of Pulp and Paper Science and Graphic Arts (LGP2), Centre national
de la recherche scientifique (CNRS), Agefpi, Université Grenoble Alpes, F-38000 Grenoble, France
| | - Frédéric Pignon
- Laboratoire
Rhéologie et Procédés (LRP), Centre national
de la recherche scientifique (CNRS), Université Grenoble Alpes, F-38000 Grenoble, France
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Soni B, Hassan EB, Schilling MW, Mahmoud B. Transparent bionanocomposite films based on chitosan and TEMPO-oxidized cellulose nanofibers with enhanced mechanical and barrier properties. Carbohydr Polym 2016; 151:779-789. [PMID: 27474625 DOI: 10.1016/j.carbpol.2016.06.022] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/18/2016] [Accepted: 06/03/2016] [Indexed: 11/17/2022]
Abstract
The development of biobased active films for use in food packaging is increasing due to low cost, environmental appeal, renewability and availability. The objective of this research was to develop an effective and complete green approach for the production of bionanocomposite films with enhanced mechanical and barrier properties. This was accomplished by incorporating TEMPO-oxidized cellulose nanofibers (2,2,6,6-tetramethylpiperidine-1-oxyl radical) into a chitosan matrix. An aqueous suspension of chitosan (100-75wt%), sorbitol (25wt%) and TEMPO-oxidized cellulose nanofibers (TEMPO-CNFs, 0-25wt%) were cast in an oven at 40°C for 2-4days. Films were preconditioned at 25°C and 50% RH for characterization. The surface morphology of the films was revealed by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The thermal properties and crystal structure of the films were evaluated by thermogravimetric analysis (TGA-DTG) and X-ray diffraction (XRD). Incorporation of TEMPO-CNFs enhanced the mechanical strength of the films due to the high aspect ratio (3-20nm width, and 10-100nm length) of TEMPO-CNFs and strong interactions with the chitosan matrix. Oxygen and water vapor transmission rates for films that are prepared with chitosan and TEMPO-CNFs (15-25wt%) were significantly reduced. Furthermore, these bionanocomposite films had good thermal stability. Use of TEMPO-CNFs in this method makes it possible to produce bionanocomposite films that are flexible, transparent, and thus have potential in food packaging applications.
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Affiliation(s)
- Bhawna Soni
- Department of Sustainable Bioproducts, Mississippi State University, Box 9820, Mississippi State, MS 39762, USA
| | - El Barbary Hassan
- Department of Sustainable Bioproducts, Mississippi State University, Box 9820, Mississippi State, MS 39762, USA.
| | - M Wes Schilling
- Department of Food Science, Nutrition & Health Promotion, Mississippi State University, Box 9805, MS 39567, USA
| | - Barakat Mahmoud
- Department of Food Science, Nutrition & Health Promotion, Mississippi State University, Box 9805, MS 39567, USA; Department of Food Science, Nutrition & Health Promotion and Coastal Research & Extension Center, Mississippi State University, 3411 Frederic St., Pascagoula, MS 39567, USA
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Kumar V, Elfving A, Koivula H, Bousfield D, Toivakka M. Roll-to-Roll Processed Cellulose Nanofiber Coatings. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00417] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Vinay Kumar
- Laboratory
of Paper Coating and Converting, Centre for Functional Materials (FUNMAT), Åbo Akademi University, 20500 Turku, Finland
| | - Axel Elfving
- Laboratory
of Paper Coating and Converting, Centre for Functional Materials (FUNMAT), Åbo Akademi University, 20500 Turku, Finland
| | - Hanna Koivula
- Department
of Food and Environmental Sciences, University of Helsinki, PL 66, Agnes
Sjöberginkatu 2, 00014 Helsinki, Finland
| | - Douglas Bousfield
- Department
of Chemical and Biological Engineering, University of Maine, Orono, Maine 04469, United States
| | - Martti Toivakka
- Laboratory
of Paper Coating and Converting, Centre for Functional Materials (FUNMAT), Åbo Akademi University, 20500 Turku, Finland
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Yao C, Wang F, Cai Z, Wang X. Aldehyde-functionalized porous nanocellulose for effective removal of heavy metal ions from aqueous solutions. RSC Adv 2016. [DOI: 10.1039/c6ra20598d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanoscale sorption is a promising strategy for catalyst and purification system design.
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Affiliation(s)
- C. Yao
- Department of Materials Science and Engineering
- University of Wisconsin – Madison
- Madison
- USA
| | - F. Wang
- Department of Materials Science and Engineering
- University of Wisconsin – Madison
- Madison
- USA
| | - Z. Cai
- Forest Products Laboratory
- USDA Forest Service
- Madison WI53726
- USA
| | - X. Wang
- Department of Materials Science and Engineering
- University of Wisconsin – Madison
- Madison
- USA
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Dalheim MØ, Vanacker J, Najmi MA, Aachmann FL, Strand BL, Christensen BE. Efficient functionalization of alginate biomaterials. Biomaterials 2015; 80:146-156. [PMID: 26708091 DOI: 10.1016/j.biomaterials.2015.11.043] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 11/06/2015] [Accepted: 11/29/2015] [Indexed: 01/09/2023]
Abstract
Peptide coupled alginates obtained by chemical functionalization of alginates are commonly used as scaffold materials for cells in regenerative medicine and tissue engineering. We here present an alternative to the commonly used carbodiimide chemistry, using partial periodate oxidation followed by reductive amination. High and precise degrees of substitution were obtained with high reproducibility, and without formation of by-products. A protocol was established using l-Tyrosine methyl ester as a model compound and the non-toxic pic-BH3 as the reducing agent. DOSY was used to indirectly verify covalent binding and the structure of the product was further elucidated using NMR spectroscopy. The coupling efficiency was to some extent dependent on alginate composition, being most efficient on mannuronan. Three different bioactive peptide sequences (GRGDYP, GRGDSP and KHIFSDDSSE) were coupled to 8% periodate oxidized alginate resulting in degrees of substitution between 3.9 and 6.9%. Cell adhesion studies of mouse myoblasts (C2C12) and human dental stem cells (RP89) to gels containing various amounts of GRGDSP coupled alginate demonstrated the bioactivity of the material where RP89 cells needed higher peptide concentrations to adhere.
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Affiliation(s)
- Marianne Ø Dalheim
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway
| | - Julie Vanacker
- Advanced Drug Delivery and Biomaterials, Louvain Drug Research Institute, Université catholique de Louvain (UCL), Brussels B-1200, Belgium
| | - Maryam A Najmi
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway
| | - Finn L Aachmann
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway
| | - Berit L Strand
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway
| | - Bjørn E Christensen
- NOBIPOL, Department of Biotechnology, Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway.
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38
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Sirviö JA, Hasa T, Ahola J, Liimatainen H, Niinimäki J, Hormi O. Phosphonated nanocelluloses from sequential oxidative–reductive treatment—Physicochemical characteristics and thermal properties. Carbohydr Polym 2015; 133:524-32. [DOI: 10.1016/j.carbpol.2015.06.090] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 10/23/2022]
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Sirviö JA, Honkaniemi S, Visanko M, Liimatainen H. Composite Films of Poly(vinyl alcohol) and Bifunctional Cross-linking Cellulose Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19691-19699. [PMID: 26280660 DOI: 10.1021/acsami.5b04879] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Long and flexible cellulose nanofibrils or stiff and short cellulose nanocrystals (CNCs) are both promising lightweight materials with high strength and the potential to serve as reinforcing agents in many polymeric materials. In this study, bifunctional reactive cellulose nanocrystals (RCNCs) with carboxyl and aldehyde functionalities were used as reinforcements to prepare acetal-bonding cross-linked poly(vinyl alcohol) (PVA) films. Two RCNCs were obtained through the mechanical homogenization of partially carboxylated dialdehyde cellulose (DAC) with a residual aldehyde content of 0.55 and 1.93 mmol/g and a carboxyl content of 1.65 and 1.93 mmol/g, respectively. The mechanical, thermal, and barrier properties of PVA-RCNC films with a variable mass ratio of RCNCs (0.5-10%) were determined. Reference CNCs without reactive aldehydes were obtained through the reduction of aldehyde functionalities to primary hydroxide groups, and their reinforcing effect was compared to RCNCs. With the addition of 10% acetal-bonding RCNCs with respect to PVA weight, the tensile strength and Young's modulus were up to 2-fold greater than those of pure PVA film. An addition of only 0.5% RCNCs improved the tensile strength of the PVA film by 66% and the modulus by 61%. In comparison, a significantly lower reinforcing effect (19% with CNC loading of 0.5%) was found using reference CNCs. PVA's effective oxygen barrier and thermal properties were preserved when RCNCs were introduced into the films.
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Affiliation(s)
- Juho Antti Sirviö
- Fibre and Particle Engineering, University of Oulu , P.O. Box 4300, FI-90014 Oulu, Finland
| | - Samuli Honkaniemi
- Fibre and Particle Engineering, University of Oulu , P.O. Box 4300, FI-90014 Oulu, Finland
| | - Miikka Visanko
- Fibre and Particle Engineering and Thule Institute, University of Oulu , P.O. Box 4300, FI-90014 Oulu, Finland
| | - Henrikki Liimatainen
- Fibre and Particle Engineering, University of Oulu , P.O. Box 4300, FI-90014 Oulu, Finland
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Visanko M, Liimatainen H, Sirviö JA, Mikkonen KS, Tenkanen M, Sliz R, Hormi O, Niinimäki J. Butylamino-functionalized cellulose nanocrystal films: barrier properties and mechanical strength. RSC Adv 2015. [DOI: 10.1039/c4ra15445b] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-standing films were fabricated from butylamino-functionalized cellulose nanocrystals and tested for their mechanical strength and barrier performance.
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Affiliation(s)
- Miikka Visanko
- Fibre and Particle Engineering Laboratory & Thule Institute
- University of Oulu
- Finland
| | | | | | - Kirsi S. Mikkonen
- Department of Food and Environmental Sciences
- University of Helsinki
- Finland
| | - Maija Tenkanen
- Department of Food and Environmental Sciences
- University of Helsinki
- Finland
| | - Rafal Sliz
- Optoelectronics and Measurement Techniques Laboratory
- University of Oulu
- Finland
| | - Osmo Hormi
- Department of Chemistry
- University of Oulu
- Finland
| | - Jouko Niinimäki
- Fibre and Particle Engineering Laboratory
- University of Oulu
- Finland
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