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1. The fibrils untwisting limits the rate of cellulose nitration process

Author:
Nikolsky, Sergey N.; Zlenko, Dmitry V.; Melnikov, Valery P.; Stovbun, Sergey V.
Source:
Carbohydrate polymers 2019 v.204 pp. 232-237
ISSN:
0144-8617
Subject:
cellulose; cellulose microfibrils,   etc   ; molecular weight; nanofibers;     Show all 4 Subjects
Abstract:
... The rate of cellulose nitration is lower compared to the low molecular weight substances. Theoretical estimates assess that the rate of the nitrating agents’ diffusion cannot provide for the characteristic time of cellulose nitration, as the densely packed regions are too small. However, the electrostatic barrier between the nitrating mixture and the microcrystallites makes the latter inaccessible ...
DOI:
10.1016/j.carbpol.2018.10.019

2. Preparation and properties of microfibrillated cellulose with different carboxyethyl content

Author:
Chen, Jing-Huan; Liu, Jin-Gang; Su, Yan-Qun; Xu, Ze-Hong; Li, Mei-Can; Ying, Rui-Feng; Wu, Jian-Quan
Source:
Carbohydrate polymers 2019 v.206 pp. 616-624
ISSN:
0144-8617
Subject:
cellulose; cellulose microfibrils,   etc   ; crystal structure; grinding; homogenization; moieties; polymerization;     Show all 7 Subjects
Abstract:
... Carboxyethyl reaction was used as a pretreatment method before grinding and homogenization to prepare microfibrillated cellulose (MFC). The effect of carboxyethylation on the properties of cellulose materials and prepared MFC samples were investigated. Results showed that cellulose materials with different carboxyethyl content were obtained by controlling the chemical dosage. This reaction increas ...
DOI:
10.1016/j.carbpol.2018.11.024

3. Self-assembly of bio-cellulose nanofibrils through intermediate phase in a cell-free enzyme system

Author:
Kim, Yeji; Ullah, Muhammad Wajid; Ul-Islam, Mazhar; Khan, Shaukat; Jang, Jae Hyun; Park, Joong Kon
Source:
Biochemical engineering journal 2019 v.142 pp. 135-144
ISSN:
1369-703X
Subject:
cellulose; cellulose nanofibers; cellulose synthase,   etc   ; culture media; liquid chromatography; monitoring; nanocomposites; polymers; scanning electron microscopy; tandem mass spectrometry;     Show all 10 Subjects
Abstract:
... The current study was aimed to investigate the synthesis and self-assembly of cellulose nanofibrils in in vitro environment through intermediate phase analysis and compare with the microbial cell system. The presence and stability of cellulose synthase and other essential enzymes were qualitatively validated through liquid chromatography–mass spectrometry/mass spectrometry linear trap quadrupole ( ...
DOI:
10.1016/j.bej.2018.11.017

4. Novel fabrication of high-modulus cellulose-based films by nanofibrillation under alkaline conditions

Author:
Abe, Kentaro
Source:
Carbohydrate polymers 2019 v.205 pp. 488-491
ISSN:
0144-8617
Subject:
cellulose; cellulose microfibrils; cellulose nanofibers,   etc   ; crystal structure; films (materials); hydrogels; hydrogen bonding; milling; modulus of elasticity; neutralization; sodium hydroxide;     Show all 11 Subjects
Abstract:
... We herein propose a novel continuous process for fabricating high-modulus films based on cellulose nanofibers. In place of a dissolution process, the pulps were mechanically disintegrated into nanofibers by ball-milling in an 8% NaOH solution. NaOH treatment loosened the hydrogen bonding between the cellulose microfibrils in the pulps, and a highly concentrated suspension (8%) of cellulose nanofib ...
DOI:
10.1016/j.carbpol.2018.10.069

5. 3D printing using plant-derived cellulose and its derivatives: A review

Author:
Dai, Lei; Cheng, Ting; Duan, Chao; Zhao, Wei; Zhang, Weipeng; Zou, Xuejun; Aspler, Joseph; Ni, Yonghao
Source:
Carbohydrate polymers 2019 v.203 pp. 71-86
ISSN:
0144-8617
Subject:
cellulose,   etc   ; esters; ethers; feedstocks; manufacturing; polymers;     Show all 6 Subjects
Abstract:
... Three-dimensional (3D) printing is classified as a revolutionary, disruptive manufacturing technology. Cellulose (the most abundant natural polymer) and its many derivatives have been widely studied for many applications. The combination of 3D printing with cellulose-based feedstocks is therefore of critical interest. This review highlights many studies on 3D printing applications of plant-derived ...
DOI:
10.1016/j.carbpol.2018.09.027

6. Lignin-based solid acid catalyst for the conversion of cellulose to levulinic acid using γ-valerolactone as solvent

Author:
Han, Yiwen; Ye, Lei; Gu, Xiaochao; Zhu, Puli; Lu, Xuebin
Source:
Industrial crops and products 2019 v.127 pp. 88-93
ISSN:
0926-6690
Subject:
cellulose,   etc   ; catalysts; levulinic acid; lignin; solubility; solvents;     Show all 6 Subjects
Abstract:
... Lignin was used as a carrier and loaded with ferrous sulfide to prepare a new type of solid acid catalyst for the catalytic conversion of cellulose to levulinic acid using γ-valerolactone as the solvent. The solubility characteristic of cellulose in γ-valerolactone was studied which proved that cellulose is physically soluble in γ-valerolactone. The performance of the new solid acid catalyst was e ...
DOI:
10.1016/j.indcrop.2018.10.058

7. Differential activity of lytic polysaccharide monooxygenases on celluloses of different crystallinity. Effectiveness in the sustainable production of cellulose nanofibrils

Author:
Valenzuela, Susana V.; Valls, Cristina; Schink, Viviane; Sánchez, Daniel; Roncero, M. Blanca; Diaz, Pilar; Martínez, Josefina; Pastor, F.I. Javier
Source:
Carbohydrate polymers 2019 v.207 pp. 59-67
ISSN:
0144-8617
Subject:
cellulose; cellulose nanofibers,   etc   ; Streptomyces ambofaciens; anion exchange chromatography; cellulases; crystal structure; energy; flax; homogenization; transmittance;     Show all 10 Subjects
Abstract:
... A series of cellulosic substrates has been produced, treated with lytic polysaccharide monooxygenase (LPMO) from Streptomyces ambofaciens (SamLPMO10C), and analyzed by high performance anion exchange chromatography (HPAEC) with pulsed amperometric detection (PAD). The activity of the bacterial LPMO showed high variability depending on the origin and degree of crystallinity of the substrate. Additi ...
DOI:
10.1016/j.carbpol.2018.11.076

8. Nanocellulose-based multilayer barrier coatings for gas, oil, and grease resistance

Author:
Tyagi, Preeti; Lucia, Lucian A.; Hubbe, Martin A.; Pal, Lokendra
Source:
Carbohydrate polymers 2019 v.206 pp. 281-288
ISSN:
0144-8617
Subject:
cellulose; cellulose nanofibers,   etc   ; air; brittleness; coatings; humidity; nanocrystals; oils; oxygen; packaging; paper; petroleum;     Show all 12 Subjects
Abstract:
... Cellulose derivatives such as cellulose nanofibers (CNF) and cellulose nanocrystals (CNC) have enormous potential to reduce or replace petroleum and fluorochemicals for food and other packaging applications. CNFs have been studied for their excellent oxygen and gas barrier properties; however, their performance rapidly decreases in the presence of moisture and higher humidity. CNCs are less sensit ...
DOI:
10.1016/j.carbpol.2018.10.114

9. Influence of cellulose nanofibrils on the structural elements of ice cream

Author:
Velásquez-Cock, J.; Serpa, A.; Vélez, L.; Gañán, P.; Gómez Hoyos, C.; Castro, C.; Duizer, L.; Goff, H.D.; Zuluaga, R.
Source:
Food hydrocolloids 2019 v.87 pp. 204-213
ISSN:
0268-005X
Subject:
cellulose; cellulose microfibrils,   etc   ; adsorption; hardness; hydrocolloids; ice; ice cream; melting; rheological properties; sensory properties;     Show all 10 Subjects
Abstract:
... Cellulose nanofibrils (CNFs) were incorporated into low-fat and standard ice cream formulations (5 wt % and 10 wt %) at two different concentrations each (0.15 and 0.3 wt %) to determine the impact of the CNFs on the structural elements and performance variables of both the pre-frozen mix and the final frozen product. Rheological properties of the aged mixes and fat destabilization, melting rate, ...
DOI:
10.1016/j.foodhyd.2018.07.035

10. The potential of endoglucanases to rapidly and specifically enhance the rheological properties of micro/nanofibrillated cellulose

Author:
Gourlay, Keith; van der Zwan, Timo; Shourav, Musavvir; Saddler, Jack
Source:
Cellulose 2018 v.25 no.2 pp. 977-986
ISSN:
0969-0239
Subject:
cellulose; cellulose fibrils,   etc   ; coatings; cosmetics; paints; viscosity;     Show all 6 Subjects
Abstract:
... The rheological properties of fluids such as paints, coatings, and cosmetics play an important role in determining the effectiveness and desirability of these materials. Typically, these fluids must be relatively viscous and must exhibit shear-thinning characteristics. Previous work has shown that a variety of fibrous cellulosic materials, particularly nanocellulosic products, can impart shear-thi ...
DOI:
10.1007/s10570-017-1637-7

11. Correction to: Comparative characteristics of TEMPO-oxidized cellulose nanofibers and resulting nanopapers from bamboo, softwood, and hardwood pulps

Author:
Chen, Yufei; Geng, Biyao; Ru, Jing; Tong, Congcong; Liu, Hongzhi; Chen, Jinzhou
Source:
Cellulose 2018 v.25 no.1 pp. 895
ISSN:
0969-0239
Subject:
cellulose; cellulose microfibrils,   etc   ; bamboos; hardwood; softwood; China;     Show all 6 Subjects
Abstract:
... The affiliation “Collaborative Innovation Center of Bamboo Resources & Highly Efficient Utilization in Zhejiang Province” in the published article should be corrected to read “Zhejiang Provincial Collaborative Innovation Center of Bamboo Resources and High-Efficiency Utilization”. ...
DOI:
10.1007/s10570-017-1553-x

12. Erratum to: Flocculation of microfibrillated cellulose in shear flow

Author:
Karppinen, Anni; Saarinen, Tapio; Salmela, Juha; Laukkanen, Antti; Nuopponen, Markus; Seppälä, Jukka
Source:
Cellulose 2017 v.24 no.12 pp. 5711
ISSN:
0969-0239
Subject:
cellulose; cellulose microfibrils,   etc   ; flocculation;     Show all 3 Subject
Abstract:
... The article “Flocculation of microfibrillated cellulose in shear flow”, written by Anni Karppinen, Tapio Saarinen, Juha Salmela, Antti Laukkanen, Markus Nuopponen and Jukka Seppälä, was originally published Online First without open access. ...
DOI:
10.1007/s10570-017-1502-8

13. A review on versatile applications of blends and composites of CNC with natural and synthetic polymers with mathematical modeling

Author:
Younas, Muhammad; Noreen, Aqdas; Sharif, Aqsa; Majeed, Ayesha; Hassan, Abida; Tabasum, Shazia; Mohammadi, Abbas; Zia, Khalid Mahmood
Source:
International journal of biological macromolecules 2019 v.124 pp. 591-626
ISSN:
0141-8130
Subject:
cellulose,   etc   ; mathematical models; mechanical properties; nanocrystals; packaging; polymers;     Show all 6 Subjects
Abstract:
... Cellulose is world's most abundant, renewable and recyclable polysaccharide on earth. Cellulose is composed of both amorphous and crystalline regions. Cellulose nanocrystals (CNCs) are extracted from crystalline region of cellulose. The most attractive feature of CNC is that it can be used as nanofiller to reinforce several synthetic and natural polymers. In this article, a comprehensive overview ...
DOI:
10.1016/j.ijbiomac.2018.11.064

14. DFT study of the influence of acetyl groups of cellulose acetate on its intrinsic birefringence and wavelength dependence

Author:
Hayakawa, Daichi; Gouda, Hiroaki; Hirono, Shuichi; Ueda, Kazuyoshi
Source:
Carbohydrate polymers 2019 v.207 pp. 122-130
ISSN:
0144-8617
Subject:
cellulose acetate,   etc   ; density functional theory; models; moieties; wavelengths;     Show all 5 Subjects
Abstract:
... The effect of the acetyl groups of cellulose acetate (CA) on its intrinsic birefringence and its wavelength dependence was investigated using density functional theory (DFT). Seven types of CA repeating-unit models that differ in their degree of substitution (DS) and substitution sites were used in the calculations. The results suggested that the intrinsic birefringence (Δn°) and its wavelength de ...
DOI:
10.1016/j.carbpol.2018.11.074

15. Effect of lignin on the release rate of acetylsalicylic acid tablets

Author:
Pishnamazi, Mahboubeh; Iqbal, Javed; Shirazian, Saeed; Walker, Gavin M.; Collins, Maurice N.
Source:
International journal of biological macromolecules 2019 v.124 pp. 354-359
ISSN:
0141-8130
Subject:
cellulose,   etc   ; active pharmaceutical ingredients; aspirin; hardness; lactose; lignin; milling; sieving;     Show all 8 Subjects
Abstract:
... The main focus of this paper is on the improvement of formulations utilising non-conventional bio-based excipients to improve tablet release rates. Two different formulations were considered. The first formulation contains Alcell lignin, lactose monohydrate and microcrystalline cellulose as excipients and acetylsalicylic acid (aspirin) as active pharmaceutical ingredient (API). The second formulat ...
DOI:
10.1016/j.ijbiomac.2018.11.136

16. Homogeneous acylation of Cellulose diacetate: Towards bioplastics with tuneable thermal and water transport properties

Author:
Boulven, Manon; Quintard, Guilhem; Cottaz, Amandine; Joly, Catherine; Charlot, Aurélia; Fleury, Etienne
Source:
Carbohydrate polymers 2019 v.206 pp. 674-684
ISSN:
0144-8617
Subject:
cellulose,   etc   ; acylation; bioplastics; esters; glass; moieties; solvents; temperature; water solubility;     Show all 9 Subjects
Abstract:
... In this study, we report a simple, non-degrading and efficient homogeneous acylation of cellulose diacetate (CDA) by using a large panel of commercially available acylating aliphatic moieties, differing in their structure (fatty, ramified, bulky, cycloaliphatic, aromatic, more or less spaced from the cellulose backbone), in view of generating a library of well-defined cellulose mixed esters with e ...
DOI:
10.1016/j.carbpol.2018.11.030

17. An investigation on the dissolution qualities of foam granulated products

Author:
Mutch, George A.; Hapgood, Karen P.; Shen, Rui; Selomulya, Cordelia
Source:
Powder technology 2019 v.343 pp. 693-704
ISSN:
0032-5910
Subject:
cellulose,   etc   ; foams; granules; lactose; laundry; liquids; particle size; powders;     Show all 8 Subjects
Abstract:
... The worldwide home care industry makes widespread use of granulated laundry powders which must be highly soluble and dissolve rapidly to induce an effective wash cycle. The morphology of these powders influences their dissolution rate. Binder addition methods affect the properties of granulated products. Foam granulation is a method of granulation where a foamed binder is used. This may provide ad ...
DOI:
10.1016/j.powtec.2018.11.086

18. Development of cellulose based aerogel utilizing waste denim—A Morphology study

Author:
Zeng, Beini; Wang, Xungai; Byrne, Nolene
Source:
Carbohydrate polymers 2019 v.205 pp. 1-7
ISSN:
0144-8617
Subject:
cellulose,   etc   ; aerogels; denim; drying; ionic liquids; nanopores; wastes;     Show all 7 Subjects
Abstract:
... Cellulose aerogels with orientated micron-sized pore structure were obtained from denim waste utilizing ionic liquid solvents through dissolution, regeneration and drying. The pore structure of denim-derived aerogels was comprised of a mixture of micron-sized vertically aligned pores and a nanoporous fibrous network. The size and distribution of vertically aligned pores and the nanopores were infl ...
DOI:
10.1016/j.carbpol.2018.09.070

19. Effect of low loadings of cellulose nanocrystals on the significantly enhanced crystallization of biodegradable poly(butylene succinate-co-butylene adipate)

Author:
Li, Jingnan; Qiu, Zhaobin
Source:
Carbohydrate polymers 2019 v.205 pp. 211-216
ISSN:
0144-8617
Subject:
cellulose,   etc   ; biodegradability; crystal structure; crystallization; melting; nanocomposites; nanocrystals; temperature;     Show all 8 Subjects
Abstract:
... Biodegradable poly(butylene succinate-co-butylene adipate) (PBSA)/cellulose nanocrystals (CNC) nanocomposites were successfully prepared via a solution and casting method at low CNC loadings. The nonisothermal and isothermal melt crystallization behaviors of PBSA/CNC nanocomposites were significantly enhanced by low loading of CNC. The nonisothermal melt crystallization peak temperature obviously ...
DOI:
10.1016/j.carbpol.2018.10.035

20. Porous structured cellulose microsphere acts as biosensor for glucose detection with “signal-and-color” output

Author:
Li, Wei; Zhang, Li; Li, Qi; Wang, Shenggao; Luo, Xiaogang; Deng, Hongbing; Liu, Shilin
Source:
Carbohydrate polymers 2019 v.205 pp. 295-301
ISSN:
0144-8617
Subject:
cellulose,   etc   ; biosensors; color; crosslinking; glucose; glucose oxidase; microgels; microparticles; starch;     Show all 9 Subjects
Abstract:
... In order to develop a biosensor based on porous structured cellulose microspheres for glucose detection with “signal-and-color” output, in this work, active group carboxyl was introduced to cellulose matrix by using plasma technology, and then glucose oxidase (GOx) was chemically immobilized through EDC-NHS cross-linking reaction. The cellulose microgels containing 21.28 mg/g of enzymes exhibited ...
DOI:
10.1016/j.carbpol.2018.10.084