1
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Setter C, Dias MC, Mascarenhas ARP, Tonoli GHD, de Oliveira TJP. Effect of different pre-treatments on the redispersion capacity of spray-dried microfibrillated cellulose: Elaboration and characterization of biofilms. Int J Biol Macromol 2023:125279. [PMID: 37301348 DOI: 10.1016/j.ijbiomac.2023.125279] [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: 10/24/2022] [Revised: 05/15/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023]
Abstract
This study aimed to evaluate the influence of the addition of the cationic surfactant cetyltrimethylammonium bromide (CTAB) in microfibrillated cellulose (MFC/CNFs) suspensions submitted to different pretreatments to produce redispersible spray-dried (SD) MFC/CNFs. Suspensions pretreated with 5 % and 10 % sodium silicate and oxidized with 2,2,6,6,-tetramethylpiperidinyl-1-oxyl (TEMPO) were modified with CTAB surfactant and subsequently dried by SD. The SD-MFC/CNFs aggregates were redispersed by ultrasound to produce cellulosic films by the casting method. In summary, the results demonstrated that the addition of CTAB surfactant to the TEMPO-oxidized suspension was critical to achieving the most effective redispersion. The experimental results obtained using micrographs, optical (UV-Vis), mechanical, water vapor barrier properties, and the quality index confirmed that the addition of CTAB to the TEMPO-oxidized suspension favored the redispersion of spray-dried aggregates, development of cellulosic films with attractive properties, offering possibilities for the elaboration of new products, for example, in the production of bionanocomposites with higher mechanical performance. This research brings interesting insights into the redispersion and application of SD-MFC/CNFs aggregates, strengthening the commercialization of MFC/CNFs for industrial use.
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Affiliation(s)
- Carine Setter
- Department of Forest Sciences, Federal University of Lavras, C.P. 3037, 37200-900 Lavras, MG, Brazil
| | - Matheus Cordazzo Dias
- Department of Forest Engineering, State University of Amapá, AP. Av. Pres. Vargas, 650- Central, Macapá, AP 68900-070, Brazil
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2
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Han CS, Kang JH, Park EH, Lee HJ, Jeong SJ, Kim DW, Park CW. Corrugated surface microparticles with chitosan and levofloxacin for improved aerodynamic performance. Asian J Pharm Sci 2023; 18:100815. [PMID: 37304227 PMCID: PMC10248792 DOI: 10.1016/j.ajps.2023.100815] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 04/04/2023] [Accepted: 04/30/2023] [Indexed: 06/13/2023] Open
Abstract
Corrugated surface microparticles comprising levofloxacin (LEV), chitosan and organic acid were prepared using the 3-combo spray drying method. The amount and the boiling point of the organic acid affected the degree of roughness. In this study, we tried to improve the aerodynamic performance and increase aerosolization by corrugated surface microparticle for lung drug delivery efficiency as dry powder inhaler. HMP175 L20 prepared with 175 mmol propionic acid solution was corrugated more than HMF175 L20 prepared with 175 mmol formic acid solution. The ACI and PIV results showed a significant increase in aerodynamic performance of corrugated microparticles. The FPF value of HMP175 L20 was 41.3% ± 3.9% compared with 25.6% ± 7.7% of HMF175 L20. Corrugated microparticles also showed better aerosolization, decreased x-axial velocity, and variable angle. Rapid dissolution of drug formulations was observed in vivo. Low doses administered to the lungs achieved higher LEV concentrations in the lung fluid than high doses administered orally. Surface modification in the polymer-based formulation was achieved by controlling the evaporation rate and improving the inhalation efficiency of DPIs.
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Affiliation(s)
- Chang-Soo Han
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Ji-Hyun Kang
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
- School of Pharmacy, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Eun hye Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Hyo-Jung Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - So-Jeong Jeong
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
| | - Dong-Wook Kim
- College of Pharmacy, Wonkwang University, Iksan 54538, Republic of Korea
| | - Chun-Woong Park
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Republic of Korea
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3
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Physico-chemical and structural characterization of cellulose nanocrystals obtained by two drying methods: Freeze-drying and spray-drying. Food Hydrocoll 2023. [DOI: 10.1016/j.foodhyd.2023.108571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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4
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Huntington B, Pitcher ML, Sheikhi A. Nanoengineering the Redispersibility of Cellulose Nanocrystals. Biomacromolecules 2023; 24:43-56. [PMID: 36469623 DOI: 10.1021/acs.biomac.2c00518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Enhancing the redispersibility of dried colloidal particles to yield stable dispersions after rehydration is a persistent challenge in the sustainable processing of nanocelluloses due to hydrogen bonding-induced irreversible aggregation. Programming nanocelluloses, such as cellulose nanocrystals (CNC), with moieties that enable colloidal repulsion after rehydration may address this challenge and contribute to the United Nation (UN)'s sustainable development goals (SDGs) of urban development and sustainable living (SDGs 9 and 11) and cradle-to-cradle processing (SDG 12). We hypothesize that imparting electrosteric repulsion to CNC via polyanionic disordered cellulose chains (hairs) protruding from each end may render the dried nanocrystals highly redispersible in aqueous media. Anionic hairy CNC (AHCNC), that is, CNC decorated with dicarboxylated cellulose (DCC) chains, were synthesized by the preferential, successive periodate/chlorite oxidation of the disordered regions of cellulose fibrils, bearing >5 mmol of carboxylate groups per gram. The colloidal properties of AHCNC were compared with those of sulfate half-ester group-functionalized CNC and TEMPO-oxidized CNC (TOCNC) after redispersion in aqueous media, followed by comparing the redispersibility of AHCNC and CNC in aqueous solutions containing monovalent or divalent cations and at varying pH. The AHCNC had remarkable aqueous redispersibility even at high ionic strengths and extreme pH. The unique redispersibility mechanism of dried AHCNC relies on the synergistic steric and electrostatic repulsion forces, recuperated upon the rehydration of DCC. This work may open new opportunities for more sustainable and cost-effective handling and processing of nanocelluloses.
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Affiliation(s)
- Breanna Huntington
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States.,Department of Agricultural and Biological Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Mica L Pitcher
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States.,Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania16802, United States
| | - Amir Sheikhi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States.,Department of Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
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5
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Xu Y, Xu Y, Chen H, Gao M, Yue X, Ni Y. Redispersion of dried plant nanocellulose: A review. Carbohydr Polym 2022; 294:119830. [PMID: 35868740 DOI: 10.1016/j.carbpol.2022.119830] [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: 04/27/2022] [Revised: 07/01/2022] [Accepted: 07/01/2022] [Indexed: 01/01/2023]
Abstract
Nanocellulose has undergone substantial development as a high value-added cellulose product with broad applications. Dried products are advantageous to decrease transportation costs. However, dried nanocellulose has redispersion challenges when rewetting. In this work, drying techniques, factors affecting redispersibility, and strategies improving the nanocellulose redispersibility are comprehensively reviewed. Hydrogen bonds of nanocellulose are unavoidably developed during drying, leading to inferior redispersibility of dried nanocellulose, even hornification. Drying processes of nanocellulose are discussed first. Then, factors affecting redispersibility are discussed. Following that, strategies improving the nanocellulose redispersibility are analyzed and their advantages and disadvantages are highlighted. Surface charge modification and steric hindrance concept are two main pathways to overcome the redispersion challenge, which are mainly carried out by chemical modification, additive incorporation and non-cellulosic component preservation. Despite several advancements having been achieved, new approaches for enhancing the nanocellulose redispersibility are still required to promote the industrial-scale applications of nanocellulose in various domains.
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Affiliation(s)
- Yang Xu
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China
| | - Yongjian Xu
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China.
| | - Hao Chen
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China
| | - Minlan Gao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China
| | - Xiaopeng Yue
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China; Shaanxi Province Key Lab of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an, Shaanxi 710021, China
| | - Yonghao Ni
- Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada.
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6
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Baldelli A, Etayash H, Oguzlu H, Mandal R, Jiang F, Hancock RE, Pratap-Singh A. Antimicrobial properties of spray-dried cellulose nanocrystals and metal oxide-based nanoparticles-in-microspheres. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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7
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Paradisi E, Rosa R, Baldi G, Dami V, Cioni A, Lorenzi G, Leonelli C. Microwave-Assisted Vacuum Synthesis of TiO 2 Nanocrystalline Powders in One-Pot, One-Step Procedure. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 12:149. [PMID: 35010100 PMCID: PMC8746694 DOI: 10.3390/nano12010149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/24/2021] [Accepted: 12/27/2021] [Indexed: 01/02/2023]
Abstract
A new method for fast and simple synthesis of crystalline TiO2 nanoparticles with photocatalytic activity was developed by carrying out a classic sol-gel reaction directly under vacuum. The use of microwaves for fast heating of the reaction medium further reduces synthesis times. When the solvent is completely removed by vacuum, the product is obtained in the form of a powder that can be easily redispersed in water to yield a stable nanoparticle suspension, exhibiting a comparable photocatalytic activity with respect to a commercial product. The present methodology can, therefore, be considered a process intensification procedure for the production of nanotitania.
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Affiliation(s)
- Enrico Paradisi
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Roberto Rosa
- Department of Sciences and Methods for Engineering, University of Modena and Reggio Emilia, 42122 Reggio Emilia, Italy;
| | - Giovanni Baldi
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Valentina Dami
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Andrea Cioni
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Giada Lorenzi
- Ce.Ri.Col. Colorobbia Research Centre, Colorobbia Consulting S.R.L., 50059 Sovigliana-Vinci, Italy; (G.B.); (V.D.); (A.C.); (G.L.)
| | - Cristina Leonelli
- Department of Engineering “Enzo Ferrari” (DIEF), University of Modena and Reggio Emilia, 41125 Modena, Italy;
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8
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Colijn I, Fokkink R, Schroën K. Quantification of energy input required for chitin nanocrystal aggregate size reduction through ultrasound. Sci Rep 2021; 11:17217. [PMID: 34446774 PMCID: PMC8390482 DOI: 10.1038/s41598-021-96657-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 08/09/2021] [Indexed: 02/07/2023] Open
Abstract
Nanoparticles have been claimed to contribute efficiently to e.g. the mechanical strength of composite materials when present as individual particles. However, these particles tend to aggregate. In this paper we prepare nanocrystals from chitin, a product with high potential added value for application in bio-based materials, and investigate the effect of ultrasound on de-aggregation. Chitin nanocrystals with a length ~ 200 nm and a diameter ~ 15 nm, were obtained via acid hydrolysis of crude chitin powder. Freeze drying resulted in severe aggregation and after redispersion sizes up to ~ 200 µm were found. Ultrasound treatment was applied and break up behaviour was investigated using static light scattering, dynamic light scattering, and laser diffraction. Our results suggest that the cumulative energy input was the dominant factor for chitin nanocrystal aggregate breakup. When a critical energy barrier of ~ 100 kJ/g chitin nanocrystals was exceeded, the chitin nanocrystal aggregates broke down to nanometre range. The break up was mostly a result of fragmentation: the aggregation energy of chitin nanocrystal aggregates was quantified to be ~ 370 kJ/g chitin nanocrystals and we hypothesize that mainly van der Waals interactions and hydrogen bonds are responsible for aggregation.
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Affiliation(s)
- Ivanna Colijn
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
| | - Remco Fokkink
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Physical Chemistry and Soft Matter Group, Stippeneng 4, 6708 WE Wagningen, The Netherlands
| | - Karin Schroën
- grid.4818.50000 0001 0791 5666Wageningen University and Research, Food Process Engineering Group, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands
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9
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Lugoloobi I, Maniriho H, Jia L, Namulinda T, Shi X, Zhao Y. Cellulose nanocrystals in cancer diagnostics and treatment. J Control Release 2021; 336:207-232. [PMID: 34102221 DOI: 10.1016/j.jconrel.2021.06.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 12/11/2022]
Abstract
Cancer is currently a major threat to public health, being among the principal causes of death to the global population. With carcinogenesis mechanisms, cancer invasion, and metastasis remaining blurred, cancer diagnosis and novel drug delivery approaches should be developed urgently to enable management and treatment. A dream break-through would be a non-invasive instantaneous monitoring of cancer initiation and progression to fast-track diagnosis for timely specialist treatment decisions. These innovations would enhance the established treatment protocols, unlimited by evasive biological complexities during tumorigenesis. It is therefore contingent that emerging and future scientific technologies be equally biased towards such innovations by exploiting the apparent properties of new developments and materials especially nanomaterials. CNCs as nanomaterials have undisputable physical and excellent biological properties that enhanced their interest as biomedical materials. This article therefore highlights CNCs utility in cancer diagnosis and therapy. Their extraction, properties, modification, in-vivo/in-vitro medical applications, biocompatibility, challenges and future perspectives are precisely discussed.
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Affiliation(s)
- Ishaq Lugoloobi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, People's Republic of China; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China.
| | - Hillary Maniriho
- Department of Biochemistry and Human Molecular Genetics, Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Liang Jia
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Tabbisa Namulinda
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Xiangyang Shi
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, People's Republic of China; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China
| | - Yili Zhao
- College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China.
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10
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Thayyil Raju L, Koshkina O, Tan H, Riedinger A, Landfester K, Lohse D, Zhang X. Particle Size Determines the Shape of Supraparticles in Self-Lubricating Ternary Droplets. ACS NANO 2021; 15:4256-4267. [PMID: 33601887 PMCID: PMC8023807 DOI: 10.1021/acsnano.0c06814] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Supraparticles are large clusters of much smaller colloidal particles. Controlling the shape and anisotropy of supraparticles can enhance their functionality, enabling applications in fields such as optics, magnetics, and medicine. The evaporation of self-lubricating colloidal ouzo droplets is an easy and efficient strategy to create supraparticles, overcoming the problem of the "coffee-stain effect" during drop evaporation. Yet, the parameters that control the shape of the supraparticles formed in such evaporating droplets are not fully understood. Here, we show that the size of the colloidal particles determines the shape of the supraparticle. We compared the shape of the supraparticles made of seven different sizes of spherical silica particles, namely from 20 to 1000 nm, and of the mixtures of small and large colloidal particles at different mixing ratios. Specifically, our in situ measurements revealed that the supraparticle formation proceeds via the formation of a flexible shell of colloidal particles at the rapidly moving interfaces of the evaporating droplet. The time tc0 when the shell ceases to shrink and loses its flexibility is closely related to the size of particles. A lower tc0, as observed for smaller colloidal particles, leads to a flat pancake-like supraparticle, in contrast to a more curved American football-like supraparticle from larger colloidal particles. Furthermore, using a mixture of large and small colloidal particles, we obtained supraparticles that display a spatial variation in particle distribution, with small colloids forming the outer surface of the supraparticle. Our findings provide a guideline for controlling the supraparticle shape and the spatial distribution of the colloidal particles in supraparticles by simply self-lubricating ternary drops filled with colloidal particles.
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Affiliation(s)
- Lijun Thayyil Raju
- Physics
of Fluids Group, Faculty of Science and Technology, Mesa+ Institute
for Nanotechnology, Max Planck Center for Complex Fluid Dynamics,
and J. M. Burgers Centre for Fluid Dynamics, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
| | - Olga Koshkina
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Huanshu Tan
- Department
of Chemical Engineering, University of California, Santa Barbara, California 93106, United States
- Center
for Complex Flows and Soft Matter Research & Department of Mechanics
and Aerospace Engineering, Southern University
of Science and Technology, Shenzhen 518055, China
| | - Andreas Riedinger
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina Landfester
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Detlef Lohse
- Physics
of Fluids Group, Faculty of Science and Technology, Mesa+ Institute
for Nanotechnology, Max Planck Center for Complex Fluid Dynamics,
and J. M. Burgers Centre for Fluid Dynamics, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
- Max
Planck Institute for Dynamics and Self-Organisation, Am Fassberg 17, 37077 Göttingen, Germany
| | - Xuehua Zhang
- Physics
of Fluids Group, Faculty of Science and Technology, Mesa+ Institute
for Nanotechnology, Max Planck Center for Complex Fluid Dynamics,
and J. M. Burgers Centre for Fluid Dynamics, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
- Department
of Chemical and Materials Engineering, University
of Alberta, 12-380 Donadeo
Innovation Centre for Engineering, Edmonton, T6G1H9 Alberta, Canada
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11
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Oguzlu H, Dobyrden I, Liu X, Bhaduri S, Claesson PM, Boluk Y. Polymer Induced Gelation of Aqueous Suspensions of Cellulose Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3015-3024. [PMID: 33646793 DOI: 10.1021/acs.langmuir.0c02336] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We investigated the gelation of cellulose nanocrystals (CNCs) in polyelectrolyte and neutral polymer solutions. Cellulose nanocrystals (CNCs) with half-ester sulfate groups produced by acid hydrolysis of wood pulp were used in this study. The microstructure of CNCs/polymer suspensions was investigated in semidilute concentration regimes by selecting carboxymethyl cellulose (CMC700) as an anionic polymer and poly(ethylene oxide) (PEO600) as a neutral polymer solution. Together with quartz crystal microbalance with dissipation monitoring (QCM-D), rheology, scanning electron microscopy (SEM), and cryo-transmission electron microscopy (cryo-TEM), we characterized CNCs-polymer interactions, the suspension microstructure, and the macroscopic gel flow. Significant viscosity increases at low shear rates coupled with high shear-thinning behaviors were observed in CNC colloid-CMC700 polymer mixtures, but not those CNCs in PEO600 solutions. The apparent differences between CNCs-CMC700 and CNCs-PEO600 mixtures were due to their chain confirmations. On the basis of the evaluations from STEM, cryo-TEM, and polarized optical microscopy, we proposed that the excess CMC700 molecules in solutions result in the depletion of CNCs and the formation of anisotropic domains.
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Affiliation(s)
- Hale Oguzlu
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2H9
| | - Illia Dobyrden
- Department of Chemistry, Surface and Corrosion Science, School of Chemical Sciences and Engineering, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
| | - Xiaoyan Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, P. R. China
| | - Swayamdipta Bhaduri
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2H9
| | - Per Martin Claesson
- Department of Chemistry, Surface and Corrosion Science, School of Chemical Sciences and Engineering, KTH Royal Institute of Technology, SE-10044 Stockholm, Sweden
- Division of Bioscience and Materials, RISE Research Institutes of Sweden, SE-114 86 Stockholm, Sweden
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2H9
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12
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Colloidal stability of cellulose nanocrystals in aqueous solutions containing monovalent, divalent, and trivalent inorganic salts. J Colloid Interface Sci 2021; 584:456-463. [DOI: 10.1016/j.jcis.2020.09.117] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 02/06/2023]
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13
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Prataviera R, Pollet E, Bretas RES, Avérous L, Almeida Lucas A. Melt processing of nanocomposites of cellulose nanocrystals with biobased thermoplastic polyurethane. J Appl Polym Sci 2020. [DOI: 10.1002/app.50343] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rogerio Prataviera
- UFSCar–Universidade Federal de São Carlos Department of Materials Engineering ‐ DEMa, PPG‐CEM São Carlos São Paulo Brazil
| | - Eric Pollet
- Institute of Chemistry and Processes for Energy, Environment and Health BioTeam/ICPEES‐ECPM, UMR CNRS 7515, Université de Strasbourg Strasbourg France
| | - Rosario Elida Suman Bretas
- UFSCar–Universidade Federal de São Carlos Department of Materials Engineering ‐ DEMa, PPG‐CEM São Carlos São Paulo Brazil
| | - Luc Avérous
- Institute of Chemistry and Processes for Energy, Environment and Health BioTeam/ICPEES‐ECPM, UMR CNRS 7515, Université de Strasbourg Strasbourg France
| | - Alessandra Almeida Lucas
- UFSCar–Universidade Federal de São Carlos Department of Materials Engineering ‐ DEMa, PPG‐CEM São Carlos São Paulo Brazil
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14
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Gong X, Kalantari M, Aslanzadeh S, Boluk Y. Interfacial interactions and electrospinning of cellulose nanocrystals dispersions in polymer solutions: a review. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1847137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Xiaoyu Gong
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Mahsa Kalantari
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Samira Aslanzadeh
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta, Canada
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15
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Imani M, Dimic-Misic K, Tavakoli M, Rojas OJ, Gane PAC. Coupled Effects of Fibril Width, Residual and Mechanically Liberated Lignin on the Flow, Viscoelasticity, and Dewatering of Cellulosic Nanomaterials. Biomacromolecules 2020; 21:4123-4134. [PMID: 32790994 DOI: 10.1021/acs.biomac.0c00918] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rheological behavior of aqueous suspensions of lignocellulose nanofibrils (LCNFs) is investigated systematically by considering the coupled effect of residual lignin and LCNF morphology. The LCNF was obtained by high-energy fluidization of TEMPO-oxidized mechanical fibers, followed by size fractionation (fibril widths of ∼5, ∼9, and ∼18 nm). The nanofibril width and the corresponding fibril-fibril interactions are strongly influenced by the presence and distribution of lignin in the respective fractions, either retained on the fibril surface or as free structures present in the finest size fraction. All samples containing lignin display dilatancy, typifying gel suspensions with aggregated hydrophobic particles. Fine fractionated samples display strong gel behavior. The coarse fractionated sample, by contrast, shows a greater tendency to flocculate via entanglement and displays less gel-like characteristics; hence, it dewaters more freely.
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Affiliation(s)
- Monireh Imani
- Chemical Engineering, Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Aalto, Espoo 02150, Finland
| | - Katarina Dimic-Misic
- Chemical Engineering, Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Aalto, Espoo 02150, Finland
| | - Mehrnoosh Tavakoli
- Department of Pulp and Paper Technology, Gorgan University of Agricultural Sciences & Natural Resources, 4913815739 Gorgan, Iran
| | - Orlando J Rojas
- Chemical Engineering, Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Aalto, Espoo 02150, Finland.,Bioproducts Institute, Department of Chemical & Biological Engineering, Chemistry, and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Patrick A C Gane
- Chemical Engineering, Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Aalto, Espoo 02150, Finland
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Preparation of powdered oil particles by spray drying of cellulose nanocrystals stabilized Pickering hempseed oil emulsions. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124823] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Saha S, Hemraz UD, Boluk Y. The Effects of High Pressure and High Temperature in Semidilute Aqueous Cellulose Nanocrystal Suspensions. Biomacromolecules 2020; 21:1031-1035. [PMID: 31799838 DOI: 10.1021/acs.biomac.9b01130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A semidilute cellulose nanocrystal suspension was tested for pressure, volume, temperature dependencies of its viscosity and density. The compression of a 2.0 wt % cellulose nanocrystal suspension under 5.0 MPa at room temperature resulted in morphological changes from istotropic to nematic form. However, at high temperature, high-pressure treatment caused desulfation and gelation. Those results have significant applications, not only as additives in drilling and fracturing fluids but also for the preparation of hydrogels.
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Affiliation(s)
- Sudeshna Saha
- Department of Civil and Environmental Engineering , University of Alberta , Edmonton , Alberta T6G 2R3 , Canada
| | - Usha D Hemraz
- Department of Civil and Environmental Engineering , University of Alberta , Edmonton , Alberta T6G 2R3 , Canada
| | - Yaman Boluk
- Department of Civil and Environmental Engineering , University of Alberta , Edmonton , Alberta T6G 2R3 , Canada
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