1
|
Ai S, Huang Z, Yu W, Huang C. Efficient dissolution of cellulose in slow-cooling alkaline systems and interacting modes between alkali and urea at the molecular level. Carbohydr Res 2024; 536:109054. [PMID: 38350405 DOI: 10.1016/j.carres.2024.109054] [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: 01/02/2024] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 02/15/2024]
Abstract
The dissolution of microcrystalline cellulose (MCC) in a urea-NaOH system is beneficial for its mechanical processing. The apparent MCC solubility was greatly improved to 14 wt% under a slow-cooling condition with a cooling rate of -0.3 °C/min. The cooling curve or thermal history played a crucial role in the dissolution process. An exotherm (-54.7 ± 3 J/g MCC) was detected by DSC only under the slow-cooling condition, and the cryogenic dissolution of MCC was attributed to the exothermic interaction between MCC and solvent. More importantly, the low cooling rate promoted the dissolution of MCC by providing enough time for the diffusion of OH- and urea into MCC granules at higher temperatures. The Raman spectral data showed that the intramolecularly and intermolecularly hydrogen bonds in cellulose were cleaved by NaOH and urea, respectively. XPS and solid-state 13C NMR results showed that hydrogen bonds were generated after dissolution, and a dual-hydrogen-bond binding mode between urea and cellulose was confirmed by DFT calculations. Both the decrease of enthalpy and increase of entropy dominated the spontaneity of MCC dissolution, and that is the reason for the indispensability of cryogenic environment. The high apparent solubility of MCC in the slow-cooling process and the dissolution mechanism are beneficial for the studies on cellulose modification and mechanical processing.
Collapse
Affiliation(s)
- Shuo Ai
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China.
| | - Zhenhua Huang
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
| | - Wanguo Yu
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China.
| | - Chengdu Huang
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, 545006, China
| |
Collapse
|
2
|
Naserifar S, Koschella A, Heinze T, Bernin D, Hasani M. Investigation of cellulose dissolution in morpholinium-based solvents: impact of solvent structural features on cellulose dissolution. RSC Adv 2023; 13:18639-18650. [PMID: 37346962 PMCID: PMC10280132 DOI: 10.1039/d3ra03370h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 06/04/2023] [Indexed: 06/23/2023] Open
Abstract
A series of N-methylmorpholinium salts with varying N-alkyl chains and Cl-, OAc- and OH- as counter ions have been synthesized and investigated for their ability to dissolve cellulose, aiming at elucidating solvent structural features affecting cellulose dissolution. Synthesis procedures have been developed to, to a high extent, rely on conversions in water and microwave-assisted reactions employing a reduced number of work-up steps and ion-exchange resins that can be regenerated. Water solutions of morpholinium hydroxides proved capable of dissolving cellulose, with those of them possessing alkyl chains longer than ethyl showing surprising dissolution ability at room-temperature. Morpholinium acetates behaved as ionic liquids, and were also capable of dissolving cellulose when combined with DMSO. The obtained cellulose solutions were characterized according to their chemical and colloidal stability using 13C NMR spectroscopy, size exclusion chromatography and flow sweep measurements, while the ethanol coagulates were investigated in terms of crystallinity using solid state NMR. In contrast, the morpholinium chlorides obtained were hygroscopic with high melting points and low solubility in common organic solvents e.g., acetone, DMSO and DMAc, thus lacking the ability to swell or dissolve cellulose.
Collapse
Affiliation(s)
- Shirin Naserifar
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology 412 96 Gothenburg Sweden +46317722999
- Wallenberg Wood Science Center, Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Andreas Koschella
- Center of Excellence for Polysaccharide Research, Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University of Jena Humboldtstraße 10 07743 Jena Germany
| | - Thomas Heinze
- Center of Excellence for Polysaccharide Research, Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University of Jena Humboldtstraße 10 07743 Jena Germany
| | - Diana Bernin
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology 412 96 Gothenburg Sweden +46317722999
| | - Merima Hasani
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology 412 96 Gothenburg Sweden +46317722999
- Wallenberg Wood Science Center, Chalmers University of Technology 412 96 Gothenburg Sweden
| |
Collapse
|
3
|
Hao J, Chen Y, Zhu M, Zhao Y, Zhang K, Xu X. Spatial-Temporal Heterogeneity in Large Three-Dimensional Nanofibrillar Cellulose Hydrogel for Human Pluripotent Stem Cell Culture. Gels 2023; 9:gels9040324. [PMID: 37102936 PMCID: PMC10138276 DOI: 10.3390/gels9040324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/28/2023] Open
Abstract
One approach to cell expansion is to use large hydrogel for growing a large number of cells. Nanofibrillar cellulose (NFC) hydrogel has been used for human induced pluripotent stem cell (hiPSCs) expansion. However, little is known about the status of hiPSCs at the single cell level inside large NFC hydrogel during culture. To understand the effect of NFC hydrogel property on temporal-spatial heterogeneity, hiPSCs were cultured in 0.8 wt% NFC hydrogel with different thicknesses with the top surface exposed to the culture medium. The prepared hydrogel exhibits less restriction in mass transfer due to the presence of macropores and micropores interconnecting the macropores. More than 85% of cells at different depths survive after 5 days of culture inside 3.5 mm thick hydrogel. Biological compositions at different zones inside the NFC gel were examined over time at a single-cell level. A dramatic concentration gradient of growth factors estimated in the simulation along 3.5 mm NFC hydrogel could be a reason for the spatial-temporal heterogeneity in protein secondary structure and protein glycosylation and pluripotency loss at the bottom zone. pH change caused by the lactic acid accumulation over time leads to changes in cellulose charge and growth factor potential, probably another reason for the heterogeneity in biochemical compositions. This study may help to develop optimal conditions for producing high-quality hiPSCs in large nanofibrillar cellulose hydrogel at scale.
Collapse
Affiliation(s)
- Jin Hao
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| | - Ying Chen
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| | - Mingjian Zhu
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| | - Yingqing Zhao
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| | - Kai Zhang
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| | - Xia Xu
- Biochemical Engineering Research Center, Anhui University of Technology, Ma'anshan 243002, China
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan 243002, China
| |
Collapse
|
4
|
Surface Engineering of Regenerated Cellulose Nanocomposite Films with High Strength, Ultraviolet Resistance, and a Hydrophobic Surface. Polymers (Basel) 2023; 15:polym15061427. [PMID: 36987208 PMCID: PMC10053694 DOI: 10.3390/polym15061427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/02/2023] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
Regenerated cellulose packaging materials can alleviate the environmental pollution and carbon emissions caused by conventional plastics and other chemicals. They require regenerated cellulose films with good barrier properties, such as strong water resistance. Herein, using an environmentally friendly solvent at room temperature, a straightforward procedure for synthesizing these regenerated cellulose (RC) films, with excellent barrier properties and doping with nano-SiO2, is presented. After the surface silanization modification, the obtained nanocomposite films exhibited a hydrophobic surface (HRC), in which the nano-SiO2 provided a high mechanical strength, whereas octadecyltrichlorosilane (OTS) provided hydrophobic long-chain alkanes. The contents of the nano-SiO2 and the concentrations of the OTS/n-hexane in regenerated cellulose composite films are crucial, as they define its morphological structure, tensile strength, UV-shielding ability, and the other performance of these composite films. When the nano-SiO2 content was 6%, the tensile stress of the composite film (RC6) increased by 41.2%, the maximum tensile stress was 77.22 MPa, and the strain-at-break was 14%. Meanwhile, the HRC films had more superior multifunctional integrations of tensile strength (73.91 MPa), hydrophobicity (HRC WCA = 143.8°), UV resistance (>95%), and oxygen barrier properties (5.41 × 10−11 mL·cm/m2·s·Pa) than the previously reported regenerated cellulose films in packaging materials. Moreover, the modified regenerated cellulose films could biodegrade entirely in soil. These results provide an experimental basis for preparing regenerated-cellulose-based nanocomposite films that exhibit a high performance in packaging applications.
Collapse
|
5
|
Dissolution of cellulose into supercritical water and its dissolving state followed by structure formation from the solution system. Carbohydr Polym 2022; 275:118669. [PMID: 34742408 DOI: 10.1016/j.carbpol.2021.118669] [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: 06/02/2021] [Revised: 08/30/2021] [Accepted: 09/11/2021] [Indexed: 11/24/2022]
Abstract
Cellulose was treated with supercritical water at 668 K and 25 MPa for 0.04 s in this study. The cellulose/water system was transparent at room temperature for a while after supercritical water treatment before a precipitate gradually appeared over several hours. The precipitation process was monitored by synchrotron X-ray scattering. The scattering functions of fractal systems and flat-like structures were utilized to explain the experimentally observed small-angle scattering profiles. Immediately after supercritical water treatment, the cellulose appeared to dissolve with a fractal dimension D of approximately 1, indicating that the cellulose molecules were rigid, followed by aggregation into a 5-nm-thick flat-like structure. The flat-like structure was determined to be similar to the molecular sheets observed during the early stages of precipitation in the cellulose/aqueous sodium hydroxide and cellulose/aqueous lithium hydroxide/urea systems. Resultant regenerated cellulose had high crystallinity, large crystal size, and a low degree of polymerization.
Collapse
|
6
|
Acharya S, Liyanage S, Parajuli P, Rumi SS, Shamshina JL, Abidi N. Utilization of Cellulose to Its Full Potential: A Review on Cellulose Dissolution, Regeneration, and Applications. Polymers (Basel) 2021; 13:4344. [PMID: 34960895 PMCID: PMC8704128 DOI: 10.3390/polym13244344] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 12/17/2022] Open
Abstract
As the most abundant natural polymer, cellulose is a prime candidate for the preparation of both sustainable and economically viable polymeric products hitherto predominantly produced from oil-based synthetic polymers. However, the utilization of cellulose to its full potential is constrained by its recalcitrance to chemical processing. Both fundamental and applied aspects of cellulose dissolution remain active areas of research and include mechanistic studies on solvent-cellulose interactions, the development of novel solvents and/or solvent systems, the optimization of dissolution conditions, and the preparation of various cellulose-based materials. In this review, we build on existing knowledge on cellulose dissolution, including the structural characteristics of the polymer that are important for dissolution (molecular weight, crystallinity, and effect of hydrophobic interactions), and evaluate widely used non-derivatizing solvents (sodium hydroxide (NaOH)-based systems, N,N-dimethylacetamide (DMAc)/lithium chloride (LiCl), N-methylmorpholine-N-oxide (NMMO), and ionic liquids). We also cover the subsequent regeneration of cellulose solutions from these solvents into various architectures (fibers, films, membranes, beads, aerogels, and hydrogels) and review uses of these materials in specific applications, such as biomedical, sorption, and energy uses.
Collapse
Affiliation(s)
| | | | | | | | | | - Noureddine Abidi
- Department of Plant and Soil Science, Fiber and Biopolymer Research Institute, Texas Tech University, Lubbock, TX 79409, USA; (S.A.); (S.L.); (P.P.); (S.S.R.); (J.L.S.)
| |
Collapse
|
7
|
Azmi AH, Abd Rahman SF, Zainal Abidin MS. Microcrystalline Cellulose as Graphite Exfoliation Agent and its Effect on Electrical Conductivity. SOLID STATE PHENOMENA 2021; 317:144-151. [DOI: 10.4028/www.scientific.net/ssp.317.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Graphene has drawn a lot of attention as a promising material for a conductive ink due to its high electrical conductivity and abundant source. Selection of solvent for ink formulation is crucial to obtain the desired result. In this work, microcrystal cellulose solution is investigated as alternative solvent for conductive ink formulation. Although the viability of the microcrystal cellulose solution was already presented in other works, further thorough and systematic study is highly required. Cellulose solution was prepared using microcrystalline cellulose and sodium hydroxide aqueous solution. Dispersions with different graphite-to-cellulose ratio were prepared. The exfoliation process was for sonication times of 8, 16, 24 and 32 hours. For Raman spectroscopy and 4-point probe measurement, graphene thin film was formed by drop-casting 20μl dispersion on glossy paper. Sample with low graphite-to-cellulose ratio exhibited more significant reduction in unexfoliated graphite content over the sonication time. The sufficient amount of cellulose in the dispersion leads to more effective exfoliation process. According to analysis on the Raman spectra, the exfoliated graphite could be classified as few-layer graphene with low defect content. The drop-casted thin film from dispersion with ratio of 20:1 showed sheet resistance lesser than 100 Ω/sq. The obtained results confirmed the effectiveness of microcrystal cellulose as the agent for exfoliation process.
Collapse
|
8
|
Impact of NaOH Concentration on Deweaving of Cotton Fabric in Aqueous Solutions. SUSTAINABILITY 2021. [DOI: 10.3390/su13042015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the past decade, there has been increasing attention paid to the recycling of cotton fabric waste. In the present study, different concentrations of sodium hydroxide (NaOH) ranging from 1 M to 4 M were used to thermomechanically deweave cotton fabric. The fabrics treated with 1 M NaOH and 2 M NaOH were partially deweaved, whereas those treated with 3 M NaOH and 4 M NaOH were completely deweaved. Fourier-transform infrared (FTIR) spectroscopy was applied to analyze the chemistry and structure of the cotton fabric. The FTIR spectra indicated that the structure of cotton fabrics treated with 1–2 M NaOH were similar to that of pristine fabric, while the presence of NaOH was observed. In the case of samples treated with 3–4 M NaOH, both the peak positions and the band intensities were changed, in addition to the formation of cellulose II. FTIR spectra for the recycled NaOH-treated cotton fabrics were compared, and no major structural changes were identified. A post-treatment with deionized (DI) water removed excess Na+ ions, with the sample showing a similar molecular structure to that of the pristine material. These results suggest the feasibility of recycling aqueous NaOH for post-washing treatment as a new method for recycling cellulosic fabric waste.
Collapse
|
9
|
Usachev SV, Zlenko DV, Nagornova IV, Koverzanova EV, G. Mikhaleva M, Vedenkin AS, Vtyurina DN, Skoblin AA, Nikolsky SN, Politenkova GG, Stovbun SV. Structure and properties of helical fibers spun from cellulose solutions in [Bmim]Cl. Carbohydr Polym 2020; 235:115866. [DOI: 10.1016/j.carbpol.2020.115866] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/27/2019] [Accepted: 01/12/2020] [Indexed: 11/30/2022]
|
10
|
Strong cellulose hydrogel as underwater superoleophobic coating for efficient oil/water separation. Carbohydr Polym 2020; 229:115467. [DOI: 10.1016/j.carbpol.2019.115467] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/23/2019] [Accepted: 10/11/2019] [Indexed: 01/24/2023]
|
11
|
Korhonen O, Budtova T. Gelation of cellulose-NaOH solutions in the presence of cellulose fibers. Carbohydr Polym 2019; 224:115152. [PMID: 31472859 DOI: 10.1016/j.carbpol.2019.115152] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 07/26/2019] [Accepted: 07/31/2019] [Indexed: 10/26/2022]
Abstract
It is well known that when cellulose is dissolved in aqueous NaOH-based solvent, solutions are gelling with increasing time and temperature. The goal of this work was to understand if the presence of non-dissolved cellulose fibers influences gelation behavior of the whole system. One of the motivations is to control gelation when making all-cellulose composites with short fibers dispersed in cellulose-NaOH-water solutions. Gelation kinetics of cellulose(dissolving pulp)-NaOH-water solutions with added softwood kraft fibers were investigated using dynamic rheology. Fiber concentration, dissolving pulp degree of polymerization and solution temperature were varied. In all cases the addition of kraft fibers accelerates gelation and increases modulus at gel point while the presence of "inert" carbon fibers does not influence solution gelation kinetics. It was suggested that acceleration of gelation and reinforcement of cellulose gels is due to the interactions between dissolved and non-dissolved cellulose.
Collapse
Affiliation(s)
- Oona Korhonen
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, 00076 AaltoFinland
| | - Tatiana Budtova
- Aalto University, School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, 00076 AaltoFinland; MINES ParisTech, PSL Research University, CEMEF - Center for materials forming, UMR CNRS 7635, CS 10207, 06904 Sophia Antipolis, France.
| |
Collapse
|
12
|
Samikannu R, Shukla SK, Samikannu A, Mikkola JP. Lutidinium-based ionic liquids for efficient dissolution of cellulose. NEW J CHEM 2019. [DOI: 10.1039/c8nj04698k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we have studied the potential of lutidinium-based ionic liquids in the dissolution of cellulose as confirmed by the X-ray diffraction (XRD), scanning electron microscopy (SEM) and 13C CP/MAS NMR, spectroscopic methods.
Collapse
Affiliation(s)
- Rakesh Samikannu
- Umeå University, Department of Chemistry
- Chemical-Biology Centre
- Technical Chemistry
- SE-90787 Umeå
- Sweden
| | - Shashi Kant Shukla
- Umeå University, Department of Chemistry
- Chemical-Biology Centre
- Technical Chemistry
- SE-90787 Umeå
- Sweden
| | - Ajaikumar Samikannu
- Umeå University, Department of Chemistry
- Chemical-Biology Centre
- Technical Chemistry
- SE-90787 Umeå
- Sweden
| | - Jyri-Pekka Mikkola
- Umeå University, Department of Chemistry
- Chemical-Biology Centre
- Technical Chemistry
- SE-90787 Umeå
- Sweden
| |
Collapse
|
13
|
Duan Y, Ma Y, Zhao X, Huang R, Su R, Qi W, He Z. Real-time adsorption and action of expansin on cellulose. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:317. [PMID: 30479662 PMCID: PMC6249958 DOI: 10.1186/s13068-018-1318-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 11/13/2018] [Indexed: 05/02/2023]
Abstract
BACKGROUND Biological pretreatment is an environmentally safe method for disrupting recalcitrant structures of lignocellulose and thereby improving their hydrolysis efficiency. Expansin and expansin-like proteins act synergistically with cellulases during hydrolysis. A systematic analysis of the adsorption behavior and mechanism of action of expansin family proteins can provide a basis for the development of highly efficient pretreatment methods for cellulosic substrates using expansins. RESULTS Adsorption of Bacillus subtilis expansin (BsEXLX1) onto cellulose film under different conditions was monitored in real time using a quartz crystal microbalance with dissipation. A model was established to describe the adsorption of BsEXLX1 onto the film. High temperatures increased the initial adsorption rate while reducing the maximum amount of BsEXLX1 adsorbed onto the cellulose. Non-ionic surfactants (polyethylene glycol 4000 and Tween 80) at low concentrations enhanced BsEXLX1 adsorption; whereas, high concentrations had the opposite effect. However, sodium dodecyl sulfate inhibited adsorption at both low and high concentrations. We also investigated the structural changes of cellulose upon BsEXLX1 adsorption and found that BsEXLX1 adsorption decreased the crystallinity index, disrupted hydrogen bonding, and increased the surface area of cellulose, indicating greater accessibility of the substrate to the protein. CONCLUSIONS These results increase our understanding of the interaction between expansin and cellulose, and provide evidence for expansin treatment as a promising strategy to enhance enzymatic hydrolysis of lignocellulose.
Collapse
Affiliation(s)
- Yuhao Duan
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
| | - Yuanyuan Ma
- Biomass Conversion Laboratory of Tianjin University R&D Center for Petrochemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
| | - Xudong Zhao
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
| | - Renliang Huang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072 China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072 China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072 China
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072 China
| |
Collapse
|
14
|
Nakano T. Modeling of the morphological change of cellulose microfibrils caused with aqueous NaOH solution: the longitudinal contraction and laterally swelling during decrystallization. J Mol Model 2017; 23:129. [PMID: 28332081 DOI: 10.1007/s00894-017-3307-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 03/06/2017] [Indexed: 11/28/2022]
Abstract
The conformation of cellulose microfibrils treated with aqueous NaOH was modeled as partially decrystallized cellulose chains before completing conversion to cellulose II, in order to elucidate the change in morphology of ramie fiber caused by NaOH treatment. Equations for the relative length and width of the microfibrils were derived on the basis of partially decrystallized microfibrils modeling. Each equation contains four parameters, n, β, w c , and c r , which correspond to the number of glucose residues between periodic defects along the untreated ramie cellulose microfibrils, the extension ratio of amorphous cellulose chain along length, the cross-section crystallinity, and the correction term of crystallinity, respectively. The validity of the derived equations was confirmed by two types of simulations. One is performed using experimental data L/L 0 and W/W 0 as a function of crystallinity, while the other is done using the relationship between the relative length and width obtained from the experimental data, which is independent of crystallinity, was performed. The best-fit simulation was obtained under n = 277, β = 2.813, and c r w c = 0.671 for the former and under n = 301 and β = 2.792 for the latter. These values of n and β correspond closely to the values reported in references for ramie microfibrils. Both simulation results show that macroscopic changes in the morphology of ramie fibers is attributable to the changes in cellulose chain conformation in the decrystallized regions created along the microfibrils upon NaOH treatment.
Collapse
|
15
|
Douglass EF, Avci H, Boy R, Rojas OJ, Kotek R. A Review of Cellulose and Cellulose Blends for Preparation of Bio-derived and Conventional Membranes, Nanostructured Thin Films, and Composites. POLYM REV 2017. [DOI: 10.1080/15583724.2016.1269124] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Eugene F. Douglass
- Textile Engineering, Chemistry and Science Department, College of Textiles, NCSU, Raleigh, North Carolina
| | - Huseyin Avci
- Metallurgical and Materials Engineering, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Ramiz Boy
- Textile Engineering, Chemistry and Science Department, College of Textiles, NCSU, Raleigh, North Carolina
| | - Orlando J. Rojas
- Department of Forest Products Technology, Aalto University, Espoo, Finland
- Department of Forest Biomaterials, NCSU, Raleigh, North Carolina
| | - Richard Kotek
- Textile Engineering, Chemistry and Science Department, College of Textiles, NCSU, Raleigh, North Carolina
| |
Collapse
|
16
|
Lindman B, Medronho B, Alves L, Costa C, Edlund H, Norgren M. The relevance of structural features of cellulose and its interactions to dissolution, regeneration, gelation and plasticization phenomena. Phys Chem Chem Phys 2017. [DOI: 10.1039/c7cp02409f] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The interactions and structural properties of cellulose influence different phenomena.
Collapse
Affiliation(s)
- Björn Lindman
- FSCN
- Mid Sweden University
- SE-851 70 Sundsvall
- Sweden
- Physical Chemistry
| | - Bruno Medronho
- Faculty of Sciences and Technology (MeditBio)
- Ed. 8
- University of Algarve
- 8005-139 Faro
- Portugal
| | - Luis Alves
- CQC
- University of Coimbra
- Department of Chemistry
- 3004-535 Coimbra
- Portugal
| | | | - Håkan Edlund
- FSCN
- Mid Sweden University
- SE-851 70 Sundsvall
- Sweden
| | | |
Collapse
|
17
|
Tanvir A, Al-Maadeed MA, Hassan MK. Secondary chain motion and mechanical properties of γ-irradiated-regenerated cellulose films. STARCH-STARKE 2016. [DOI: 10.1002/star.201500329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Aisha Tanvir
- Center for Advanced Materials; Qatar University; Doha Qatar
| | | | | |
Collapse
|
18
|
Jiang R, Ingle KN, Golberg A. Macroalgae (seaweed) for liquid transportation biofuel production: what is next? ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.01.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
19
|
Kulasinski K, Guyer R, Derome D, Carmeliet J. Water Adsorption in Wood Microfibril-Hemicellulose System: Role of the Crystalline–Amorphous Interface. Biomacromolecules 2015; 16:2972-8. [DOI: 10.1021/acs.biomac.5b00878] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Karol Kulasinski
- Chair
of Building Physics, Swiss Federal University of Technology Zurich, Stefano-Franscini-Platz 5, 8093 Zürich, Switzerland
- Laboratory
for Multiscale Studies in Building Physics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Robert Guyer
- Solid
Earth Geophysics Group, Los Alamos National Laboratory, MS D446, Los Alamos, New Mexico 87545, United States
- Department
of Physics, University of Nevada, 1664 North Virginia Street, Reno, Nevada 89557, United States
| | - Dominique Derome
- Laboratory
for Multiscale Studies in Building Physics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Jan Carmeliet
- Chair
of Building Physics, Swiss Federal University of Technology Zurich, Stefano-Franscini-Platz 5, 8093 Zürich, Switzerland
- Laboratory
for Multiscale Studies in Building Physics, Empa, Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| |
Collapse
|
20
|
Ni J, Teng N, Chen H, Wang J, Zhu J, Na H. Hydrolysis behavior of regenerated celluloses with different degree of polymerization under microwave radiation. BIORESOURCE TECHNOLOGY 2015; 191:229-233. [PMID: 25997012 DOI: 10.1016/j.biortech.2015.05.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 05/11/2015] [Accepted: 05/12/2015] [Indexed: 06/04/2023]
Abstract
This work studied the hydrolysis behavior of regenerated celluloses (RCs) with different degree of polymerization (DP) by using the catalyst of dilute acid under microwave radiation. Results showed that the DP had a considerable influence on hydrolysis of cellulose. The reactivity of RCs was significantly improved when DP was lower than 51. The highest sugar yield of 59.2% was achieved from RC with lowest DP of 23 at 160 °C for 15 min. But the lowest yield of 32.6% was obtained when RC with highest DP of 132 was used. Recrystallization of cellulose was found to hinder the further hydrolysis particularly with the high DP. The effect of recrystallization can be reduced by the decrease of DP of RCs. This research demonstrates that the DP of RCs plays a crucial role on hydrolysis and it provides a preliminary guide based on DP to find a suitable pretreatment method for cellulose hydrolysis.
Collapse
Affiliation(s)
- Jinping Ni
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Na Teng
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Haizhen Chen
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Jinggang Wang
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Jin Zhu
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China
| | - Haining Na
- Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China.
| |
Collapse
|
21
|
Analysis of mercerization process based on the intensity change of deconvoluted resonances of (13)C CP/MAS NMR: Cellulose mercerized under cooling and non-cooling conditions. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 53:189-95. [PMID: 26042706 DOI: 10.1016/j.msec.2015.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 03/04/2015] [Accepted: 04/10/2015] [Indexed: 11/21/2022]
Abstract
The area intensity change of C1, C4, and C6 in spectrum obtained by (13)C CP/MAS NMR and the mutual relationship between their changes were examined for cellulose samples treated with various concentrations of aqueous NaOH solutions under non-cooling and cooling conditions. The area intensity of C1-up and C6-down changed cooperatively with that of C4-down which corresponds to the crystallinity of samples: "-up" and "-down" are the up- and down- field component in a splitting peak of NMR spectrum, respectively. The intensity change of C1-up starts to decrease with decreasing in that of C4-down after that of C6-down is almost complete. These changes were more clearly observed for samples treated under cooling condition. It can be suggested that their characteristic change relates closely to the change in conformation of cellulose chains by induced decrystallization and the subsequent crystallization of cellulose II, and presumed that their changes at microscopic level relate to the macroscopic morphological changes such as contraction along the length of cellulose chains and recovery along the length.
Collapse
|
22
|
Guo H, He M, Huang R, Qi W, Guo W, Su R, He Z. Changes in the supramolecular structures of cellulose after hydrolysis studied by terahertz spectroscopy and other methods. RSC Adv 2014. [DOI: 10.1039/c4ra08314h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
23
|
Liu Z, Wang H, Li B, Liu C, Jiang Y, Yu G, Mu X. Biocompatible magnetic cellulose–chitosan hybrid gel microspheres reconstituted from ionic liquids for enzyme immobilization. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33033d] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Novel regenerated cellulose films prepared by coagulating with water: Structure and properties. Carbohydr Polym 2012; 87:95-100. [DOI: 10.1016/j.carbpol.2011.07.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 07/10/2011] [Accepted: 07/12/2011] [Indexed: 11/18/2022]
|
25
|
Liu Z, Wang H, Liu C, Jiang Y, Yu G, Mu X, Wang X. Magnetic cellulose–chitosan hydrogels prepared from ionic liquids as reusable adsorbent for removal of heavy metal ions. Chem Commun (Camb) 2012; 48:7350-2. [DOI: 10.1039/c2cc17795a] [Citation(s) in RCA: 220] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
26
|
Miyamoto H, Ago M, Yamane C, Seguchi M, Ueda K, Okajima K. Supermolecular structure of cellulose/amylose blends prepared from aqueous NaOH solutions and effects of amylose on structural formation of cellulose from its solution. Carbohydr Res 2011; 346:807-14. [DOI: 10.1016/j.carres.2011.01.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 01/28/2011] [Accepted: 01/31/2011] [Indexed: 10/18/2022]
|
27
|
Kamide K, Saito M. Recent advances in molecuar and supermolecuar characterization of cellulose and cellulose derivatives. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.19940830122] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
28
|
Luo X, Zhang L. Creation of regenerated cellulose microspheres with diameter ranging from micron to millimeter for chromatography applications. J Chromatogr A 2010; 1217:5922-9. [DOI: 10.1016/j.chroma.2010.07.026] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Revised: 07/02/2010] [Accepted: 07/14/2010] [Indexed: 10/19/2022]
|
29
|
Huang R, Su R, Qi W, He Z. Understanding the key factors for enzymatic conversion of pretreated lignocellulose by partial least square analysis. Biotechnol Prog 2010; 26:384-92. [PMID: 19938060 DOI: 10.1002/btpr.324] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The relationship between the physicochemical properties of lignocellulosic substrates and enzyme digestion is still not well known. After different pretreatments, cellulase hydrolysis and measurements of physicochemical characteristics by column solute exclusion, particle size analysis, X-ray diffraction, Fourier transform infrared spectroscopy and solid state (13)C nuclear magnetic resonance were performed in this study. Partial least squares was then applied to seek the key factors limiting the rate and extent of cellulose digestion. According to the PLS results, the most important factor for cellulose digestion was accessible interior surface area, followed by delignification and the destruction of the hydrogen bonds. The cellulose digestion at 2 and 24 hr were improved with the increased accessibility of interior surface area to the reporter molecules of 5.1-nm diameter. Removal of lignin and breaking of hydrogen bonds were also found to significantly promote cellulose conversion. Other properties, including the breakdown of intramolecular hydrogen bonds, cellulose crystallinity, and hemicellulose content, had less effect on the efficiency of enzymatic hydrolysis.
Collapse
Affiliation(s)
- Renliang Huang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Nankai District, Tianjin 300072, China
| | | | | | | |
Collapse
|
30
|
MIYAMOTO H, YAMANE C, SEGUCHI M, OKAJIMA K. Comparison between Cellulose Blend Films Prepared from Aqueous Sodium Hydroxide Solution and Edible Films of Biopolymers with Possible Application for New Food Materials. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2010. [DOI: 10.3136/fstr.17.21] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
31
|
MIYAMOTO H, YAMANE C, SEGUCHI M, OKAJIMA K. Structure and Properties of Cellulose-Starch Blend Films Regenerated from Aqueous Sodium Hydroxide Solution. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2009. [DOI: 10.3136/fstr.15.403] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
32
|
Ishii D, Tatsumi D, Matsumoto T. Effect of solvent exchange on the supramolecular structure, the molecular mobility and the dissolution behavior of cellulose in LiCl/DMAc. Carbohydr Res 2008; 343:919-28. [DOI: 10.1016/j.carres.2008.01.035] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 01/22/2008] [Accepted: 01/23/2008] [Indexed: 10/22/2022]
|
33
|
Kiyose M, Yamamoto E, Yamane C, Midorikawa T, Takahashi T. Structure and Properties of Low-Substituted Hydroxypropylcellulose Films and Fibers Regenerated from Aqueous Sodium Hydroxide Solution. Polym J 2007. [DOI: 10.1295/polymj.pj2006206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
34
|
Araki J, Kataoka T, Ito K. New solvent for polyrotaxane. III. Dissolution of a poly(ethylene glycol)/cyclodextrin polyrotaxane in a calcium thiocyanate aqueous solution orN-methylmorpholine-N-oxide monohydrate. J Appl Polym Sci 2007. [DOI: 10.1002/app.26232] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
35
|
|
36
|
Cuissinat C, Navard P. Swelling and Dissolution of Cellulose Part II: Free Floating Cotton and Wood Fibres in NaOH–Water–Additives Systems. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/masy.200651202] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
37
|
Yang G, Miyamoto H, Yamane C, Okajima K. Structure of Regenerated Cellulose Films from Cellulose/Aqueous NaOH Solution as a Function of Coagulation Conditions. Polym J 2006. [DOI: 10.1295/polymj.pj2006025] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
38
|
Watanabe A, Morita S, Ozaki Y. Study on Temperature-Dependent Changes in Hydrogen Bonds in Cellulose Iβ by Infrared Spectroscopy with Perturbation-Correlation Moving-Window Two-Dimensional Correlation Spectroscopy. Biomacromolecules 2006; 7:3164-70. [PMID: 17096547 DOI: 10.1021/bm0603591] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Infrared (IR) spectra were measured for cellulose Ibeta prepared from the mantle of Halocynthia roretzi over a temperature range of 30-260 degrees C to explore the temperature-dependent changes in hydrogen bonds (H-bonds) in the crystal. Structural changes at the phase transition temperature of 220 degrees C are elucidated at the functional group level by perturbation-correlation moving-window two-dimensional (PCMW2D) correlation spectroscopy. The PCMW2D correlation spectra show that the intensities of bands arising from O3-H3...O5 and O2-H2...O6 intrachain H-bonds dramatically decrease at 220 degrees C, whereas the intensity changes of bands due to interchain H-bonds are not observed adequately. These results suggest that the phase transition is induced by the dissociation of the O3-H3...O5 and O2-H2...O6 intrachain H-bonds. However, the interchain H-bonds are not so much responsible for the transition directly.
Collapse
Affiliation(s)
- Akihiko Watanabe
- Department of Chemistry and Research Center for Near Infrared Spectroscopy, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | | | | |
Collapse
|
39
|
Watanabe A, Morita S, Ozaki Y. A study on water adsorption onto microcrystalline cellulose by near-infrared spectroscopy with two-dimensional correlation spectroscopy and principal component analysis. APPLIED SPECTROSCOPY 2006; 60:1054-61. [PMID: 17002831 DOI: 10.1366/000370206778397452] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Water adsorption onto microcrystalline cellulose (MCC) in the moisture content (M(c)) range of 0.2-13.4 wt % was investigated by near-infrared (NIR) spectroscopy. In order to distinguish heavily overlapping O-H stretching bands in the NIR region due to MCC and water, principal component analysis (PCA) and generalized two-dimensional correlation spectroscopy (2DCOS) were applied to the obtained spectra. The NIR spectra in four adsorption stages separated by PCA were analyzed by 2DCOS. For the low M(c) range of 0.2-3.1 wt %, a decrease in the free or weakly hydrogen-bonded (H-bonded) MCC OH band, increases in the H-bonded MCC OH bands, and increases in the adsorbed water OH bands are observed. These results suggest that the inter- and intrachain H-bonds of MCC are formed by monomeric water molecule adsorption. In the M(c) range of 3.8-7.1 wt %, spectral changes in the NIR spectra reveal that the aggregation of water molecules starts at the surface of MCC. For the high M(c) range of 8.1-13.4 wt %, the NIR results suggest that the formation of bulk water occurs. It is revealed from the present study that approximately 3-7 wt % of adsorbed water is responsible for the stabilization of the H-bond network in MCC at the cellulose-water surface.
Collapse
Affiliation(s)
- Akihiko Watanabe
- Department of Chemistry and Research Center for Near Infrared Spectroscopy, School of Science and Technology, Kwansei-Gakuin University, 2-1 Gakuen, Sanda 669-1337, Japan
| | | | | |
Collapse
|
40
|
Abstract
Rapid dissolution of cellulose in LiOH/urea and NaOH/urea aqueous solutions was studied systematically. The dissolution behavior and solubility of cellulose were evaluated by using (13)C NMR, optical microscopy, wide-angle X-ray diffraction (WAXD), FT-IR spectroscopy, DSC, and viscometry. The experiment results revealed that cellulose having viscosity-average molecular weight ((overline) M eta) of 11.4 x 104 and 37.2 x 104 could be dissolved, respectively, in 7% NaOH/12% urea and 4.2% LiOH/12% urea aqueous solutions pre-cooled to -10 degrees C within 2 min, whereas all of them could not be dissolved in KOH/urea aqueous solution. The dissolution power of the solvent systems was in the order of LiOH/urea > NaOH/urea >> KOH/urea aqueous solution. The results from DSC and (13)C NMR indicated that LiOH/urea and NaOH/urea aqueous solutions as non-derivatizing solvents broke the intra- and inter-molecular hydrogen bonding of cellulose and prevented the approach toward each other of the cellulose molecules, leading to the good dispersion of cellulose to form an actual solution.
Collapse
Affiliation(s)
- Jie Cai
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | | |
Collapse
|
41
|
Kuo YN, Hong J. Investigation of solubility of microcrystalline cellulose in aqueous NaOH. POLYM ADVAN TECHNOL 2005. [DOI: 10.1002/pat.595] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
42
|
Ruan D, Zhang L, Zhou J, Jin H, Chen H. Structure and Properties of Novel Fibers Spun from Cellulose in NaOH/Thiourea Aqueous Solution. Macromol Biosci 2004; 4:1105-12. [PMID: 15586387 DOI: 10.1002/mabi.200400120] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cellulose was dissolved rapidly in a NaOH/thiourea aqueous solution (9.5:4.5 in wt.-%) to prepare a transparent cellulose solution, which was employed, for the first time, to spin a new class of regenerated cellulose fibers by wet spinning. The structure and mechanical properties of the resulting cellulose fibers were characterized, and compared with those of commercially available viscose rayon, cuprammonium rayon and Lyocell fibers. The results from wide angle X-ray diffraction and CP/MAS 13C NMR indicated that the novel cellulose fibers have a structure typical for a family II cellulose and possessed relatively high degrees of crystallinity. Scanning electron microscopy (SEM) and optical microscopy images revealed that the cross-section of the fibers is circular, similar to natural silk. The new fibers have higher molecular weights and better mechanical properties than those of viscose rayon. This low-cost technology is simple, different from the polluting viscose process. The dissolution and regeneration of the cellulose in the NaOH/thiourea aqueous solutions were a physical process and a sol-gel transition rather than a chemical reaction, leading to the smoothness and luster of the fibers. This work provides a potential application in the field of functional fiber manufacturing.
Collapse
Affiliation(s)
- Dong Ruan
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | | | | | | | | |
Collapse
|
43
|
Umemura M, Yuguchi Y, Hirotsu T. Interaction between Cellooligosaccharides in Aqueous Solution from Molecular Dynamics Simulation: Comparison of Cellotetraose, Cellopentaose, and Cellohexaose. J Phys Chem A 2004. [DOI: 10.1021/jp049044a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Myco Umemura
- National Institute of Advanced Industrial Science & Technology, AIST, 2217-14 Hayashi-cho, Takamatsu-shi, Kagawa 761-0395, Japan
| | - Yoshiaki Yuguchi
- National Institute of Advanced Industrial Science & Technology, AIST, 2217-14 Hayashi-cho, Takamatsu-shi, Kagawa 761-0395, Japan
| | - Takahiro Hirotsu
- National Institute of Advanced Industrial Science & Technology, AIST, 2217-14 Hayashi-cho, Takamatsu-shi, Kagawa 761-0395, Japan
| |
Collapse
|
44
|
Sasaki M, Adschiri T, Arai K. Production of cellulose II from native cellulose by near- and supercritical water solubilization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2003; 51:5376-5381. [PMID: 12926886 DOI: 10.1021/jf025989i] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We explored conditions for dissolving microcrystalline cellulose in high-temperature and high-pressure water without catalyst and in order to produce cellulose II in a rapid and selective manner. For understanding reactions of microcrystalline cellulose in subcritical and supercritical water, its solubilization treatment was conducted using a continuous-flow-type microreactor. It was found that cellulose could dissolve in near- and supercritical water at short treatment times of 0.02-0.4 s, resulting in the formation of cellulose II in relatively high yield after the treatment. Next, characteristics of the cellulose II obtained were investigated. As a result, it was confirmed that the relative crystallinity index and the degree of polymerization of the cellulose II were high values ranging from 80 to 60% and from 50 to 30%, respectively. From these findings, it was suggested that this method had high potential as an alternative technique for the conventional cellulose II production method.
Collapse
Affiliation(s)
- Mitsuru Sasaki
- Genesis Research Institute, Inc., 4-1-35 Noritake-shinmachi, Nishi-ku, Nagoya 451-0051, Japan.
| | | | | |
Collapse
|
45
|
Petreu? O, Bubulac T, Petreu? I, Cazacu G. Reactions of some phosphorus compounds with cellulose dissolved in aqueous alkaline solution. J Appl Polym Sci 2003. [DOI: 10.1002/app.12532] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
46
|
Roy C, Budtova T, Navard P. Rheological properties and gelation of aqueous cellulose-NaOH solutions. Biomacromolecules 2003; 4:259-64. [PMID: 12625720 DOI: 10.1021/bm020100s] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The shear rheology of a microcrystalline cellulose dissolved in a 9% NaOH aqueous solution was studied in the steady and oscillatory modes. The cellulose-(9% NaOH-H(2)O) mixtures show not to be true solutions. In the dilute regime, with cellulose concentration below 1%, the rheological behavior is typical of the one of suspensions. The formation of cellulose aggregates is favored when temperature is increased. In the semidilute regime, an irreversible aggregate-based gelation occurs, being faster with increasing temperature.
Collapse
Affiliation(s)
- Cédric Roy
- Ecole des Mines de Paris, Centre de Mise en Forme des Matériaux, UMR CNRS/Ecole des Mines No 7635, BP 207, 06904 Sophia-Antipolis, France
| | | | | |
Collapse
|
47
|
Zhou J, Zhang L, Cai J, Shu H. Cellulose microporous membranes prepared from NaOH/urea aqueous solution. J Memb Sci 2002. [DOI: 10.1016/s0376-7388(02)00377-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
48
|
Roy C, Budtova T, Navard P, Bedue O. Structure of cellulose-soda solutions at low temperatures. Biomacromolecules 2002; 2:687-93. [PMID: 11710022 DOI: 10.1021/bm010002r] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Calorimetry, small-angle X-ray scattering, and viscometry were used to study the structure of NaOH-water and cellulose-NaOH-water solutions in the range of 0-20% NaOH and 0-5% cellulose concentrations in the low-temperature region of -60 to 0 degree C. Pure NaOH-water solutions show a pseudoeutectic behavior with three phases: free water that crystallizes and melts at a certain melting temperature which decreases with the increase of NaOH concentration; a NaOH hydrate that melts at -35 degrees C; water bound to hydrates that does not crystallize. The addition of cellulose does not change the amount of the free water. The cellulose chains are located in the hydrate region, one to two hydroxyl groups of the glucopyranose unit being bound to a soda hydrate.
Collapse
Affiliation(s)
- C Roy
- Ecole des Mines de Paris, Centre de Mise en Forme des Matériaux, UMR CNRS/Ecole des Mines 7635, BP 207, 06904 Sophia-Antipolis, France
| | | | | | | |
Collapse
|
49
|
Zhang L, Ruan D, Zhou J. Structure and Properties of Regenerated Cellulose Films Prepared from Cotton Linters in NaOH/Urea Aqueous Solution. Ind Eng Chem Res 2001. [DOI: 10.1021/ie0010417] [Citation(s) in RCA: 167] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lina Zhang
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Dong Ruan
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Jinping Zhou
- Department of Chemistry, Wuhan University, Wuhan 430072, China
| |
Collapse
|
50
|
|