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Ahn SY, Song YS. Enhanced Dichroism of Polarizing Composite Films by Embedding Sepiolite. ACS OMEGA 2024; 9:25793-25799. [PMID: 38911710 PMCID: PMC11191128 DOI: 10.1021/acsomega.3c10402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/25/2024]
Abstract
The present study investigated the use of fibrous nanoparticle-filled polarizing films. Sepiolites were selected as nanoparticles and incorporated into a PVA-iodine complex. The resulting nanocomposite film was elongated and dyed with iodine. Various properties of the nanocomposite polarizing films, including thermal, morphological, optical, and rheological features, were experimentally analyzed. The study demonstrated that an increase in sepiolite loading was accompanied by an enhancement in both the mechanical and viscoelastic properties. In particular, the incorporation of nanoparticles led to an increase in birefringence and the degree of polarization. This was attributed to the alteration of the internal structure of the PVA film caused by the embedded sepiolites. The thermal analysis showed that the composite film with a higher content of sepiolites exhibited higher crystallinity and a higher melting temperature.
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Affiliation(s)
- So Yeon Ahn
- Department of Fiber System
Engineering, Dankook University, 126 Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
| | - Young Seok Song
- Department of Fiber System
Engineering, Dankook University, 126 Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-701, Korea
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2
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Bian H, Yang Y, Tu P, Chen JY. Value-Added Utilization of Wheat Straw: From Cellulose and Cellulose Nanofiber to All-Cellulose Nanocomposite Film. MEMBRANES 2022; 12:membranes12050475. [PMID: 35629801 PMCID: PMC9146936 DOI: 10.3390/membranes12050475] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 01/27/2023]
Abstract
To accelerate the high value-added usage of agricultural residue, cellulose and cellulose nanofibers (CNFs) were extracted from wheat straw and then formed into all-cellulose nanocomposite films. The acid–alkali method (AM) and the extraction method (EM) were respectively adopted to prepare wheat straw cellulose (WSC), and the TEMPO oxidation method was used to extract CNFs. The nanocomposite films were fabricated by dissolving WSC and adding different CNF contents of 0.0, 0.5, 1.5, and 3.0%. There was a better miscibility for the all-cellulose nanocomposite film prepared by EM (Composite-E) compared to that for the all-cellulose nanocomposite film prepared by AM (Composite-A). Composite-E also showed a better optical transparency than Composite-A. The thermal stability of the two RWSCs presented contrary results when the CNFs were added, indicating a higher thermal stability for Composite-E than for Composite-A. This should have determined the properties of the films in which Cellulose I and Cellulose II coexisted for the all-cellulose nanocomposite films, and the forming mechanism of Cellulose II and crystallinity were determined by the cellulose-extracting method. X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) spectroscopy also showed that there was more Cellulose I in Composite-E than in Composite-A. The results are expected to enrich the data for deep processing of agricultural residues.
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Affiliation(s)
- Hongxia Bian
- College of Science, Gansu Agricultural University, Lanzhou 730070, China; (H.B.); (Y.Y.)
| | - Yanyan Yang
- College of Science, Gansu Agricultural University, Lanzhou 730070, China; (H.B.); (Y.Y.)
| | - Peng Tu
- College of Science, Gansu Agricultural University, Lanzhou 730070, China; (H.B.); (Y.Y.)
- Correspondence: (P.T.); (J.Y.C.)
| | - Jonathan Y. Chen
- School of Human Ecology, The University of Texas at Austin, Austin, TX 78712, USA
- Correspondence: (P.T.); (J.Y.C.)
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3
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Approaches for Extracting Nanofibrillated Cellulose from Oat Bran and Its Emulsion Capacity and Stability. Polymers (Basel) 2022; 14:polym14020327. [PMID: 35054733 PMCID: PMC8780780 DOI: 10.3390/polym14020327] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 11/17/2022] Open
Abstract
The pretreatment process is an essential step for nanofibrillated cellulose production as it enhances size reduction efficiency, reduces production cost, and decreases energy consumption. In this study, nanofibrillated cellulose (NFC) was prepared using various pretreatment processes, either chemical (i.e., acid, basic, and bleach) or hydrothermal (i.e., microwave and autoclave), followed by disintegration using high pressure homogenization from oat bran fibers. The obtained NFC were used as an emulsifier to prepare 10% oil-in-water emulsions. The emulsion containing chemically pretreated NFC exhibited the smallest oil droplet diameter (d32) at 3.76 μm, while those containing NFC using other pretreatments exhibited d32 values > 5 μm. The colors of the emulsions were mainly influenced by oil droplet size rather than the color of the fiber itself. Both NFC suspensions and NFC emulsions showed a storage modulus (G′) higher than the loss modulus (G″) without crossing over, indicating gel-like behavior. For emulsion stability, microwave pretreatment effectively minimized gravitational separation, and the creaming indices of all NFC-emulsions were lower than 6% for the entire storage period. In conclusion, chemical pretreatment was an effective method for nanofiber extraction with good emulsion capacity. However, the microwave with bleaching pretreatment was an alternative method for extracting nanofibers and needs further study to improve the efficiency.
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Li MC, Wu Q, Moon RJ, Hubbe MA, Bortner MJ. Rheological Aspects of Cellulose Nanomaterials: Governing Factors and Emerging Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006052. [PMID: 33870553 DOI: 10.1002/adma.202006052] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/01/2020] [Indexed: 05/20/2023]
Abstract
Cellulose nanomaterials (CNMs), mainly including nanofibrillated cellulose (NFC) and cellulose nanocrystals (CNCs), have attained enormous interest due to their sustainability, biodegradability, biocompatibility, nanoscale dimensions, large surface area, facile modification of surface chemistry, as well as unique optical, mechanical, and rheological performance. One of the most fascinating properties of CNMs is their aqueous suspension rheology, i.e., CNMs helping create viscous suspensions with the formation of percolation networks and chemical interactions (e.g., van der Waals forces, hydrogen bonding, electrostatic attraction/repulsion, and hydrophobic attraction). Under continuous shearing, CNMs in an aqueous suspension can align along the flow direction, producing shear-thinning behavior. At rest, CNM suspensions regain some of their initial structure immediately, allowing rapid recovery of rheological properties. These unique flow features enable CNMs to serve as rheological modifiers in a wide range of fluid-based applications. Herein, the dependence of the rheology of CNM suspensions on test protocols, CNM inherent properties, suspension environments, and postprocessing is systematically described. A critical overview of the recent progress on fluid applications of CNMs as rheology modifiers in some emerging industrial sectors is presented as well. Future perspectives in the field are outlined to guide further research and development in using CNMs as the next generation rheological modifiers.
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Affiliation(s)
- Mei-Chun Li
- School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, USA
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials science and Engineering, Nanjing Forestry University, Nanjing, 210037, P. R. China
| | - Qinglin Wu
- School of Renewable Natural Resources, Louisiana State University AgCenter, Baton Rouge, LA, 70803, USA
| | - Robert J Moon
- Forest Products Laboratory, USDA Forest Service, Madison, WI, 53726, USA
| | - Martin A Hubbe
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, 27695-8005, USA
| | - Michael J Bortner
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, VA, 24061, USA
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Jeong S, Song YS, Lim E. Fabrication and Characterization of Aluminum Nanoparticle-Reinforced Composites. Polymers (Basel) 2020; 12:E2772. [PMID: 33255458 PMCID: PMC7761280 DOI: 10.3390/polym12122772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 11/24/2022] Open
Abstract
With the expanding use of polymers in modern our lives, there is an increasing need to manufacture advanced engineering polymeric parts in a systematic and inexpensive way. Herein, we developed an organic inorganic hybrid composite material with excellent mechanical properties by enhancing the dispersion and moldability of fillers. For this, we prepared and analyzed the physical properties of acrylonitrile butadiene styrene (ABS)/aluminum nanoparticle composites. Al nanoparticles of various sizes (20 nm and 40 nm) and concentrations (3, 6, 9, and 12 wt.%) were employed. The mechanical properties of the prepared composites were measured using a universal testing machine. Rheological and thermal analyses for the composites were carried out with use of a rheometer and a differential thermal calorimeter (DSC). We also conducted optical, chemical, electrical, and morphological property studies of the samples in order to help design and produce high-performance engineering products.
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Affiliation(s)
- Seongbeom Jeong
- Department of Convergence Systems Engineering, Dankook University, Youngin 448-701, Korea; (S.J.); (Y.S.S.)
| | - Young Seok Song
- Department of Convergence Systems Engineering, Dankook University, Youngin 448-701, Korea; (S.J.); (Y.S.S.)
- Department of Fiber System Engineering, Dankook University, Youngin 448-701, Korea
| | - Eunju Lim
- Department of Convergence Systems Engineering, Dankook University, Youngin 448-701, Korea; (S.J.); (Y.S.S.)
- Department of Science Education, Dankook University, Youngin 448-701, Korea
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Lee S, Seong D, Ju Y, Kwak HW, Kim WS, Lee D. Revealing the flame retardancy mechanism of highly transparent cellulose nanopapers fabricated by vacuum filtration assisted layer-by-layer deposition. Carbohydr Polym 2020; 246:116628. [DOI: 10.1016/j.carbpol.2020.116628] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/05/2020] [Accepted: 06/07/2020] [Indexed: 12/18/2022]
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Jiang Y, De La Cruz JA, Ding L, Wang B, Feng X, Mao Z, Xu H, Sui X. Rheology of regenerated cellulose suspension and influence of sodium alginate. Int J Biol Macromol 2020; 148:811-816. [PMID: 31962069 DOI: 10.1016/j.ijbiomac.2020.01.172] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/16/2020] [Accepted: 01/17/2020] [Indexed: 01/06/2023]
Abstract
Cellulosic colloidal suspensions present unique opportunities for rheological modification of complex fluids. In this work, the rheological behavior of regenerated cellulose (RC) suspensions, including their oscillating shear and time-dependent behavior, as well as yield stress, were studied. The rheological effects of sodium alginate's addition to aqueous RC solutions subject to shear flow were investigated. The results reveal that the RC suspension exhibited "gel-like" behavior and had a shear-thinning property. At increasing RC concentrations, the suspensions' yield stress and the extent of viscosity recovery after plastic deformation had both increased. The viscoelastic suspensions underwent a transition from "solid-like" to "liquid-like" behavior upon sodium alginate's inclusion. Sodium alginate was found to enhance RC suspensions' viscosity recoverability. Furthermore, with increasing concentrations of sodium alginate, the yield stress of RC suspension began to decrease and then vanished, occurring below the 1:1 RC: sodium alginate weight ratio with total solid content fixed at 1 wt%, due to RC's inability to form an extended network RC. This study yields insights into the rheology of RC suspensions and the influence of sodium alginate and supports both their usage as rheological modifies in applications such as coatings, drug delivery systems, and additive manufacturing techniques such as 3D printing.
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Affiliation(s)
- Yang Jiang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Joshua A De La Cruz
- Materials Science and Engineering Program, University of Colorado, Boulder, CO 80309, United States of America
| | - Lei Ding
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Bijia Wang
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Xueling Feng
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Zhiping Mao
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Hong Xu
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China
| | - Xiaofeng Sui
- Key Lab of Science and Technology of Eco-textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, People's Republic of China; Innovation Center for Textile Science and Technology of Donghua University, Donghua University, Shanghai 201620, People's Republic of China.
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Xia T, Huang Y, Lan P, Lan L, Lin N. Physical Modification of Cellulose Nanocrystals with a Synthesized Triblock Copolymer and Rheological Thickening in Silicone Oil/Grease. Biomacromolecules 2019; 20:4457-4465. [DOI: 10.1021/acs.biomac.9b01186] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Tao Xia
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, Hubei, P. R. China
| | - Ying Huang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, Hubei, P. R. China
| | - Ping Lan
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, Guangxi, P. R. China
| | - Lihong Lan
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, Guangxi, P. R. China
| | - Ning Lin
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, Hubei, P. R. China
- Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530008, Guangxi, P. R. China
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Fedorov P, Luginina A, Kuznetsov S, Voronov V, Lyapin A, Ryabochkina P, Chernov M, Mayakova M, Pominova D, Uvarov O, Baranchikov A, Ivanov V, Pynenkov A, Nishchev K. Preparation and properties of methylcellulose/nanocellulose/СаF 2 :Но polymer-inorganic composite films for two-micron radiation visualizers. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.08.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Microfluidic Electrochemical Impedance Spectroscopy of Carbon Composite Nanofluids. Sci Rep 2017; 7:722. [PMID: 28389655 PMCID: PMC5429664 DOI: 10.1038/s41598-017-00760-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 03/13/2017] [Indexed: 01/12/2023] Open
Abstract
Understanding the internal structure of composite nanofluids is critical for controlling their properties and engineering advanced composite nanofluid systems for various applications. This goal can be made possible by precise analysis with the help of a systematic robust platform. Here, we demonstrate a microfluidic device that can control the orientation of carbon nanomaterials in a suspension by applying external fields and subsequently examine the electrochemical properties of the fluids at microscale. Composite nanofluids were prepared using carbon nanomaterials, and their rheological, thermal, electrical, and morphological characteristics were examined. The analysis revealed that microfluidic electrochemical impedance spectroscopy (EIS) in the device offered more reliable in-depth information regarding the change in the microstructure of carbon composite nanofluids than typical bulk measurements. Equivalent circuit modelling was performed based on the EIS results. Furthermore, the hydrodynamics and electrostatics of the microfluidic platform were numerically investigated. We anticipate that this microfluidic approach can serve as a new strategy for designing and analyzing composite nanofluids more efficiently.
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Sun R, Fang B, Lu Y, Qiu X, Du W, Han X, Zhou Q, Qiu Y. Rheological properties of hexadecyl dimethyl amine modified carboxymethyl hydroxyethyl cellulose solutions and its gelling process. J DISPER SCI TECHNOL 2017. [DOI: 10.1080/01932691.2017.1300911] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Rui Sun
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bo Fang
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yongjun Lu
- Langfang Filial of Research Institute of Petroleum Exploration and Development, Petro China, Langfang, 065007, China
| | - Xiaohui Qiu
- Langfang Filial of Research Institute of Petroleum Exploration and Development, Petro China, Langfang, 065007, China
| | - Wei Du
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Xiaofei Han
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qinggang Zhou
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yufeng Qiu
- Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, Lab of Chemical Engineering Rheology, Research Center of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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