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1. Faster magic angle spinning reveals cellulose conformations in woods

Author:
Yuan, Eric Chung-Yueh; Huang, Shing-Jong; Huang, Hung-Chia; Sinkkonen, Jari; Oss, Andres; Org, Mai-Liis; Samoson, Ago; Tai, Hwan-Ching; Chan, Jerry Chun Chung
Source:
Chemical communications 2021 v.57 no.34 pp. 4110-4113
ISSN:
1364-548X
Subject:
cellulose; cellulose fibrils,   etc   ; Picea; heat treatment;     Show all 4 Subjects
Abstract:
... We present a first report on the detection of three different C6 conformers of cellulose in spruce, as revealed by solid-state ¹H–¹³C correlation spectra. The breakthrough in ¹H resolution is achieved by magic-angle spinning in the regime of 150 kHz. The suppression of dense dipolar network of ¹H provides inverse detected ¹³C spectra at a good sensitivity even in natural samples. We find that the ...
DOI:
10.1039/d1cc01149a

2. Understanding mechanisms of drying of a cellulose slurry by magnetic resonance imaging

Author:
Ben Abdelouahab, N.; Gossard, A.; Ma, X.; Dialla, H.; Maillet, B.; Rodts, S.; Coussot, P.
Source:
Cellulose 2021 v.28 no.9 pp. 5321-5334
ISSN:
0969-0239
Subject:
cellulose,   etc   ; magnetism; shrinkage; slurries;     Show all 4 Subjects
Abstract:
... This study concerns the spatial evolution of the internal components of a macroscopic sample of cellulose slurry during its convective drying. In a first stage, some water is extracted which induces a shrinkage of the structure, the sample remaining saturated, i.e. the solid porous structure made of fibers in contact remains filled with water. In a second stage, when capillary effects are unable t ...
DOI:
10.1007/s10570-021-03916-5

3. Advanced multiple-layer composite CTA/CDA hollow fiber membranes for CO2 separations

Author:
Raza, Ayesha; Askari, Mohammad; Liang, Can Zeng; Peng, Na; Farrukh, Sarah; Hussain, Arshad; Chung, Tai-Shung
Source:
Journal of membrane science 2021 v.625 pp. 119124
ISSN:
0376-7388
Subject:
cellulose,   etc   ; air; carbon dioxide;     Show all 3 Subjects
Abstract:
... CO₂ separation has become an important global agenda because of the requirements of industrial products and CO₂-induced global warming. Membrane-based technologies have provided an alternative for CO₂ separation. To make membrane-based separation more competitive, membranes must have a high permeance and high selectivity. Herein, we have developed a new high-performance multiple-layer hollow fiber ...
DOI:
10.1016/j.memsci.2021.119124

4. Microfibrillated cellulose film with enhanced mechanical and water-resistant properties by glycerol and hot-pressing treatment

Author:
Van Nguyen, Son; Lee, Bong-Kee
Source:
Cellulose 2021 v.28 no.9 pp. 5693-5705
ISSN:
0969-0239
Subject:
cellulose; cellulose microfibrils,   etc   ; brittleness; glycerol; tensile strength; wet strength;     Show all 6 Subjects
Abstract:
... In this study, the effects of glycerol and hot-pressing treatment were investigated to improve the water-resistance and mechanical properties of microfibrillated cellulose (MFC) films. Glycerol is commonly used to remedy the brittleness of MFC films; however, it substantially reduces the mechanical strength and water resistance of these films. A hot-pressing treatment is a simple and effective way ...
DOI:
10.1007/s10570-021-03894-8

5. Multifunctional cellulose based substrates for SERS smart sensing: Principles, applications and emerging trends for food safety detection

Author:
Hu, Bingxue; Pu, Hongbin; Sun, Da-Wen
Source:
Trends in food science & technology 2021 v.110 pp. 304-320
ISSN:
0924-2244
Subject:
cellulose; cellulose nanofibers,   etc   ; biodegradability; food contamination; nanocrystals; raw materials;     Show all 6 Subjects
Abstract:
... Food safety issues leading to severe healthy, economic and even social problems and detection of food contaminants has been attracting remarkable attention in recent decades. Surface-enhanced Raman scattering (SERS) is one of the most promising techniques to enable detecting contaminants at trace levels. Besides, with the emergence of global resource shortages and environmental problems, there is ...
DOI:
10.1016/j.tifs.2021.02.005

6. Online measurement of floc size, viscosity, and consistency of cellulose microfibril suspensions with optical coherence tomography

Author:
Lauri, Janne; Haavisto, Sanna; Salmela, Juha; Miettinen, Arttu; Fabritius, Tapio; Koponen, Antti I.
Source:
Cellulose 2021 v.28 no.6 pp. 3373-3387
ISSN:
0969-0239
Subject:
cellulose; cellulose microfibrils,   etc   ; shear stress; tomography; ultrasonics; viscosity;     Show all 6 Subjects
Abstract:
... In this study, cellulose microfibril (CMF) suspensions were imaged during pipe flow at consistencies of 0.4%, 1.0%, and 1.6% with optical coherence tomography (OCT) to obtain images of the structure and the local velocity of the suspension. The viscosities obtained by combining pressure loss measurement with the OCT velocity data showed typical shear thinning behavior and were in excellent agreeme ...
DOI:
10.1007/s10570-021-03745-6

7. Facile size evaluation of cellulose nanofibrils adsorbed on polypropylene substrates using fluorescence microscopy

Author:
Tagawa, Satomi; Ishida, Koichiro; Tsuji, Tsubasa; Kondo, Tetsuo
Source:
Cellulose 2021 v.28 no.5 pp. 2917-2929
ISSN:
0969-0239
Subject:
cellulose; cellulose nanofibers,   etc   ; absorption; fluorescence; fluorescence microscopy; fluorescent dyes; polypropylenes;     Show all 7 Subjects
Abstract:
... The current study proposes a facile method based on fluorescence microscopy (FM) for evaluating the size of cellulose nanofibrils (CNFs) prepared by aqueous counter collision (ACC). Prior to FM, a polypropylene film substrate was employed for the absorption and fixing of CNFs. Using FM, it is possible to detect a single ACC-CNF that is longer than 2 µm by staining with a fluorescent probe for cell ...
DOI:
10.1007/s10570-021-03759-0

8. Effect of carboxymethylated cellulose nanofibril concentration regime upon material forming on mechanical properties in films and filaments

Author:
Håkansson, Karl M. O.
Source:
Cellulose 2021 v.28 no.2 pp. 881-895
ISSN:
0969-0239
Subject:
cellulose; cellulose nanofibers,   etc   ; carbon nanotubes; forests; silk proteins; tensile strength;     Show all 6 Subjects
Abstract:
... It is predicted that the forest and materials from the forest will play an important role to enable the transformation from our linear present to a circular and sustainable future. Therefore, there is a need to understand the materials that can be extracted from the forest, and how to use them in an efficient manner. Here, carboxymethylated cellulose nanofibrils (CNF) from the forest are used to p ...
DOI:
10.1007/s10570-020-03566-z

9. Effects of hemicellulose composition and content on the interaction between cellulose nanofibers

Author:
Kumagai, Akio; Endo, Takashi
Source:
Cellulose 2021 v.28 no.1 pp. 259-271
ISSN:
0969-0239
Subject:
cellulose; cellulose nanofibers,   etc   ; hardwood; mannans; quartz crystal microbalance; softwood; viscosity;     Show all 7 Subjects
Abstract:
... In this study, cellulose nanofibers (CNFs) from softwood and hardwood kraft pulps were prepared with different hemicellulose contents, and the effects of the hemicellulose compositions and contents on the interaction between CNFs were studied. In addition, the effects of CNF interaction on the CNF dispersion stability and viscosity characteristics in the aqueous state were investigated. Using quar ...
DOI:
10.1007/s10570-020-03530-x

10. Insights from the Structure of a Plant Cellulose Synthase Trimer

Author:
Ramírez-Rodríguez, Eduardo Antonio; McFarlane, Heather E.
Source:
Trends in plant science 2021 v.26 no.1 pp. 4-7
ISSN:
1360-1385
Subject:
cellulose; cellulose synthase,   etc   ; biopolymers; cell walls; cryo-electron microscopy; synthesis;     Show all 6 Subjects
Abstract:
... Cellulose is an essential component of plant cell walls and the most abundant biopolymer on Earth. Despite its chemical simplicity, questions remain regarding the mechanisms of cellulose synthesis. A cryo-electron microscopy structure of a simplified plant cellulose synthase enzyme complex provides new insights into assembly, localization, and regulation of this complex. ...
DOI:
10.1016/j.tplants.2020.09.010

11. Producing long afterglow by cellulose confinement effect: A wood-inspired design for sustainable phosphorescent materials

Author:
Wang, Ping; Zheng, Dongxiao; Liu, Shouxin; Luo, Mengkai; Li, Jian; Shen, Shen; Li, Shujun; Zhu, Liangliang; Chen, Zhijun
Source:
Carbon 2021 v.171 pp. 946-952
ISSN:
0008-6223
Subject:
cellulose; cellulose fibrils,   etc   ; fluorescence; humidity; hydrogen; phosphorescence; wood;     Show all 7 Subjects
Abstract:
... Embedding luminogens into a well-selected rigid matrix has been a particularly attractive way of preparing long afterglow materials. On this basis, seeking green, low-cost and sustainable materials or strategies, remains challenging but desirable. Prompted by the generation of wood fluorescence, a general strategy for preparing long afterglow materials successfully developed by embedding biomass-d ...
DOI:
10.1016/j.carbon.2020.09.060

12. Review of flexible strain sensors based on cellulose composites for multi-faceted applications

Author:
Chen, Ziyang; Yan, Tao; Pan, Zhijuan
Source:
Cellulose 2021 v.28 no.2 pp. 615-645
ISSN:
0969-0239
Subject:
cellulose acetate; cellulose nanofibers,   etc   ; carboxymethylcellulose; human health; humans; nanocrystals;     Show all 6 Subjects
Abstract:
... Flexible strain sensors have attracted much attention due to their wide applications in human health monitoring, motion detection, human–computer interaction, and smart robots in recent years. Cellulose-based materials include cellulose fibers, cellulose nanofibers, cellulose nanocrystals, and cellulose derivatives such as methylcellulose, carboxymethyl cellulose, and cellulose acetate. They exhib ...
DOI:
10.1007/s10570-020-03543-6

13. Chemically stable fluorescent anti-counterfeiting labels achieved by UV-induced photolysis of nanocellulose

Author:
Cheng, Hongrui; Wei, Xiaofeng; Qiu, Haijiang; Wang, Wensong; Su, Wenyue; Zheng, Yuanhui
Source:
RSC advances 2021 v.11 no.30 pp. 18381-18386
ISSN:
2046-2069
Subject:
cellulose,   etc   ; fluorescence; nanofibers; photolysis; solvents;     Show all 5 Subjects
Abstract:
... Carbon-based fluorescent security labels are effective methods to prevent counterfeiting. However, the properties of poor optical stability, complex and energy-consuming synthesis processes and weak bonding with substrates of carbon-based fluorescent materials limit their application prospects. Here, a novel in situ fluorescent patterning strategy is developed to achieve covert, chemically stable ...
DOI:
10.1039/d1ra02089g

14. Cotton fabrics modified for use in oil/water separation: a perspective review

Author:
Lin, Tzu-Chieh; Lee, Duu-Jong
Source:
Cellulose 2021 v.28 no.8 pp. 4575-4594
ISSN:
0969-0239
Subject:
cellulose,   etc   ; cotton; hydrophilicity; hydrophobicity; oils;     Show all 5 Subjects
Abstract:
... This article provides a perspective review on the use of modified cotton fabrics for oil–water separation. The principles of surface hydrophobicity of cotton fabrics are first described, from which the basis for producing superhydrophobic surfaces is presented. Then the preparation methods to convert hydrophilic cotton fabrics to hydrophobic fabrics are reviewed and discussed. Based on literature ...
DOI:
10.1007/s10570-021-03850-6

15. Role of in situ added cellulose nanocrystals as rheological modulator of novel waterborne polyurethane urea for 3D-printing technology

Author:
Vadillo, Julen; Larraza, Izaskun; Calvo-Correas, Tamara; Gabilondo, Nagore; Derail, Christophe; Eceiza, Arantxa
Source:
Cellulose 2021 v.28 no.8 pp. 4729-4744
ISSN:
0969-0239
Subject:
cellulose,   etc   ; nanocrystals; polyurethanes; urea; viability;     Show all 5 Subjects
Abstract:
... Cellulose nanocrystals (CNC) have been studied as rheological modulator in order to improve the printing performance of a novel polycaprolactone-polyethylene glycol (PCL-PEG) waterborne polyurethane urea (WBPUU) based ink for direct ink writing 3D-printing technology. The cellulose nanocrystals are chemically bonded to the WBPU, since they were added during the synthesis of a WBPUU, in order to tu ...
DOI:
10.1007/s10570-021-03826-6

16. Mechanics of cellulose nanopaper using a scalable coarse-grained modeling scheme

Author:
Ray, Upamanyu; Pang, Zhenqian; Li, Teng
Source:
Cellulose 2021 v.28 no.6 pp. 3359-3372
ISSN:
0969-0239
Subject:
cellulose,   etc   ; biopolymers; deformation; models; nanofibers;     Show all 5 Subjects
Abstract:
... Cellulose, the abundantly available and sustainable biopolymer, exhibits intrinsic mechanical properties superior to many high-performance structural materials. The exceptional mechanical properties of cellulose-based materials inherently hinge upon their bottom-up hierarchical material structure starting from cellulose molecular chains to large scale fibers. However, fully atomistic simulation of ...
DOI:
10.1007/s10570-021-03740-x

17. Aging evaluation for transformer oil-immersed cellulose insulation by using frequency dependent dielectric modulus technique

Author:
Liu, Jiefeng; Zhang, Heng; Fan, Xianhao; Zhang, Yiyi; Zhang, Chaohai
Source:
Cellulose 2021 v.28 no.4 pp. 2387-2401
ISSN:
0969-0239
Subject:
cellulose,   etc   ; electrodes; insulating materials; spectroscopy;     Show all 4 Subjects
Abstract:
... Frequency domain spectroscopy (FDS) technique is widely used for the aging evaluation of the transformer oil-paper insulation system. However, the typical ‘relaxation information’ of FDS data in low-frequency regions is seriously affected by both the electrode polarization effect and conductance effect, which often leads to an unsatisfactory aging condition evaluation result. Existing researches r ...
DOI:
10.1007/s10570-020-03592-x

18. A review of culture media for bacterial cellulose production: complex, chemically defined and minimal media modulations

Author:
Sperotto, Gabriela; Stasiak, Larissa Gabrieli; Godoi, João Pedro Maximino Gongora; Gabiatti, Naiana Cristine; De Souza, Samara Silva
Source:
Cellulose 2021 v.28 no.5 pp. 2649-2673
ISSN:
0969-0239
Subject:
cellulose,   etc   ; biocompatible materials; carbon; nitrogen;     Show all 4 Subjects
Abstract:
... Culture media is classified into several categories depending on their composition or application. Bacterial cellulose (BC) is a promising biomaterial with desirable properties for industrial and commercial applications. Based on that, its production was explored in several works on the modulation of the culture media. This review provides an overview of the advantages and limitations of undefined ...
DOI:
10.1007/s10570-021-03754-5

19. Ultra-fast covalent molecular printing on cellulose paper by photo-strain-triggered click ligation: UV LED versus laser irradiations

Author:
Denis, Marie; Gindre, Denis; Felpin, François-Xavier
Source:
Journal of materials science 2021 v.56 no.8 pp. 5006-5014
ISSN:
0022-2461
Subject:
cellulose,   etc   ; alkynes; ambient temperature; irradiation;     Show all 4 Subjects
Abstract:
... The use of cyclopropenone derivatives as latent photo-released strained cyclic alkynes is reported for the covalent printing of complex patterns on cellulose paper. Two different approaches using either a UV LED or a laser as light irradiation source are discussed. While the high intensity of the laser damages the grafted molecular layer, the use of a simple UV LED allows the printing in only 8 mi ...
DOI:
10.1007/s10853-020-05585-4

20. Blending effects and performance of ring-, rotor-, and air-jet-spun color-blended viscose yarns

Author:
Yang, Rui Hua; Pan, Bo; Wang, Li Jun; Li, Jian Wei
Source:
Cellulose 2021 v.28 no.3 pp. 1769-1780
ISSN:
0969-0239
Subject:
cellulose,   etc   ; color; physical activity; viscose;     Show all 4 Subjects
Abstract:
... Blending effect of color blended yarns, which plays a critical important role to the fabrics styles, is affected by yarn structure, spinning processes, and blending methods. In this study, color blended viscose yarns were produced by compact ring spinning, rotor spinning and air-jet vortex spinning with single-passage and three-passage color-blended slivers. The blending effect of these yarns was ...
DOI:
10.1007/s10570-020-03601-z