Preparation and Properties of Nanocellulose from Peracetic Flax Pulp

Барбаш, В. А.; Yashchenko, O. V.; Kedrovska, A

doi:10.9734/jsrr/2017/36571

Cited by 20 publications

(14 citation statements)

References 11 publications

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“…There was no sedimentation of nanocellulose particles when stored at room temperature for extended period of time (after 5 months of storage). Such stabilization of the nanocellulose suspension leads to the formation of films with a transparency of more than 80% in the visible spectral range, which is confirmed by the data of the article [35] and characteristic of nanocellulose from other plant raw materials [6][7][8][9].…”

Section: Hydrolysissupporting

confidence: 69%

“…Thus, the results of X-ray diffraction analysis indicate an increase in the sample crystallinity in the process of their thermochemical and physical processing. This dependence is observed for cellulose from other representatives of non-wood and woody plant raw materials [6][7][8][9]32].…”

Section: Hydrolysismentioning

confidence: 86%

“…At the first stage, treatment of Miscanthus × giganteus in the mixture of glacial acetic acid and 35% hydrogen peroxide in a volume ratio of 70:30% at the liquid to solid ratio 10:1, at temperature 95 ± 2 °C during 30-240 min was carried out. Such conditions for the cooking process were determined as optimal on the basis of previous studies [2,7,9], when the effect of all the main technological factors, including the concentration of peracetic acid before and after preparation, on the quality of organosolv pulp was studied. At the second stage, the alkaline treatment of obtained organosolv miscanthus pulp (OMP) by solution of NaOH concentration of 7% during 30-240 min, at the liquid to solid ratio 12:1 at temperature 95 ± 2 °C was carried out.…”

Section: Cooking Processmentioning

confidence: 99%

“…Organosolv methods for the production of cellulose from Miscanthus are discussed in the works [11,27,42,43]. We also studied the obtaining of cellulose from non-wood plant materials in both peracetic and performic acids [2,7,8] and in cooking solutions of ethanol, methanol, and isobutanol alcohols [3][4][5]. As the research results show, in order to obtain cellulose suitable for chemical treatment from non-wood plant materials, in particular, to produce nanocellulose, thermochemical treatment of raw materials in two stages is necessary to remove residual lignin, hemicellulose and minerals, which impair the quality of nanocellulose [7,9].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

2020

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We present the study of the preparation of pulp and nanocellulose from Miscanthus × giganteus to improve the quality of the paper for bags. The organosolv miscanthus pulp (OMP) was prepared by the environmentally friendly organosolv method-cooking in a solution of peracetic acid at the first stage and the alkaline treatment at the second stage. Nanocellulose was obtained by hydrolysis of never-dried OMP and subsequent ultrasonic treatment. Structural changes and crystallinity index of OMP and nanocellulose were studied by SEM and FTIR methods. X-ray diffraction analysis confirmed an increase in the crystallinity of OMP and nanocellulose as a result of thermochemical treatment. The nanocellulose had a density of up to 1.6 g/cm 3 , transparency up to 82%, a crystallinity index of 76.5%, and tensile strength up to 195 MPa. The AFM showed that the particles of nanocellulose have a diameter in the range from 10 to 20 nm. A TGA analysis confirmed that nanocellulose films have a denser structure and lower mass loss in the temperature range 320-440 °C compared to OMP. We established the positive effect of nanocellulose application on the physical and mechanical properties of paper for bags. The application of nanocellulose allows replacing synthetic reinforcing materials and more expensive sulfate unbleached pulp with waste paper in the production of paper and cardboard.

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Section: Hydrolysissupporting

confidence: 69%

Section: Hydrolysismentioning

confidence: 86%

Section: Cooking Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

2020

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“…other sources by treatment with 40-70 wt. % SA at temperatures from 20 to 70 o C for 30 min to overnight [7,[10][11][12]. Typical hydrolysis conditions are: concentration of SA is 60-65 wt.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Electronic Medical Record Adaptation on Reported Medication Errors in Peripartum Care Areas

2017

JCERP

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Relationship between concentration of sulfuric acid (C) and temperature (T) required for the cellulose hydrolysis to prepare nanocrystalline cellulose particles (NCP has been studied in this paper. The experiments showed that there is a linear C and T superposition exists, namely: C= Co - n T. The higher the acid concentration, the lower the hydrolysis temperature should be used, and vice versa. The minimum level of acid concentration that can be used for production of CNP is 40 wt. % at optimal temperature of 80o C. If temperature or acid concentration is lower, there is a tendency to form of microparticles. On the other hand, at higher hydrolysis temperatures, carbonized CNP with decreased yield are obtained. The rod-like crystalline nanoparticles of cellulose produced at optimal hydrolysis conditions (C=40 wt. %, T=80o C) have average sizes of 150 x 15 nm, degree of crystallinity of 75- 77% and degree of polymerization of 130-150. The nanoparticles form stable colloidal dispersions in water due to Brownian motion and negative Zeta potential imparting to these particles the mutual electrostatic repulsion. Estimated calculations have also shown that decrease in the concentration of sulfuric acid from 60 to 40 wt. % at production of CNP is economically advantageous despite increase in hydrolysis temperature from 45 to 80o C.

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Nanomaterials in 4D Printing: Expanding the Frontiers of Advanced Manufacturing

Guo,

Cui,

Agarwal

et al. 2024

Small

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As an innovative technology, four‐dimentional (4D) printing is built upon the principles of three‐dimentional (3D) printing with an additional dimension: time. While traditional 3D printing creates static objects, 4D printing generates “responsive 3D printed structures”, enabling them to transform or self‐assemble in response to external stimuli. Due to the dynamic nature, 4D printing has demonstrated tremendous potential in a range of industries, encompassing aerospace, healthcare, and intelligent devices. Nanotechnology has gained considerable attention owing to the exceptional properties and functions of nanomaterials. Incorporating nanomaterials into an intelligent matrix enhances the physiochemical properties of 4D printed constructs, introducing novel functions. This review provides a comprehensive overview of current applications of nanomaterials in 4D printing, exploring their synergistic potential to create dynamic and responsive structures. Nanomaterials play diverse roles as rheology modifiers, mechanical enhancers, function introducers, and more. The overarching goal of this review is to inspire researchers to delve into the vast potential of nanomaterial‐enabled 4D printing, propelling advancements in this rapidly evolving field.

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Preparation and Properties of Nanocellulose from Peracetic Flax Pulp

Cited by 20 publications

References 11 publications

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

Preparation and application of nanocellulose from Miscanthus × giganteus to improve the quality of paper for bags

The Effect of Electronic Medical Record Adaptation on Reported Medication Errors in Peripartum Care Areas

Nanomaterials in 4D Printing: Expanding the Frontiers of Advanced Manufacturing

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