Preparation and Applications of the Cellulose Nanocrystal

Yang, Yong; Zhou, C.; Zhang, Junxiong; Wang, Guanchun; Zhang, Ruiqian; Suo, Dingjie

doi:10.1155/2019/1767028

Cited by 38 publications

(10 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to excellent surface and structural properties, cellulose is being researched extensively for various applications such as food, chemicals, textile, biomaterials, electronics, electrochemical devices, and pharmaceuticals, etc. [1] , [2] . Cellulose has been further classified into Cellulose microcrystals (CMCs), Cellulose nanofibers (CNFs), and Cellulose nanocrystals (CNCs) according to its morphology and structural characteristics.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of cellulose nanocrystals (CNCs) from cotton using ultrasound-assisted acid hydrolysis

Pandi

Sonawane

Kishore

2021

Ultrasonics Sonochemistry

126

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Synthesis of cellulose nanocrystals (CNCs) from cotton using ultrasound-assisted acid hydrolysis

Pandi

Sonawane

Kishore

2021

Ultrasonics Sonochemistry

126

View full text Add to dashboard Cite

“…The TEMPO-oxidized nanocellulose (TONC) has been prepared using the TEMPO/NaBr/NaOCl system followed by ultrasonic treatment. This treatment leads to the selective removal of the amorphous regions of cellulose while maintaining the crystalline regions of cellulose macromolecules [14]. The method of preparing of the TONС was described in [15].…”

Section: Methods For Obtaining Pulp Nanocellulose and Papermentioning

confidence: 99%

Nanocellulose From Reed Stalks to Improve the Properties of Paper for Packaging Food Products

Барбаш

Yashchenko

Гондовська

et al. 2021

KPI SN

View full text Add to dashboard Cite

Background. The development of technologies for obtaining materials from plant raw materials, the use of which improves the consumer properties of cardboard and paper products and does not pollute the environment with harmful substances from synthetic polymers, is an urgent problem of our time. Objective. The purpose of the paper is to obtain pulp and nanocellulose from reed stalks by environmentally friendly methods and apply nanocellulose to improve the quality parameters of paper for packaging food products on automatic machines. Methods. To obtain pulp from reed stalks with a minimum residual content of lignin and minerals, two processing stages were used: alkaline extraction and organosolv cooking at a temperature of 97 ± 2 °C. Nanocellulose was obtained by the oxidation of organosolv reed pulp with 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) in the TEMPO / NaBr / NaClO system, which is more environmentally friendly than acid hydrolysis. The resulting nanocellulose was applied to paper samples from waste paper and sulphate unbleached pulp at a consumption from 1 to 3 g/m2. Results. Organosolv pulp was obtained from reed stalks with a residual lignin content of 0.53 % and an ash content of 0.045 %, which was used to obtain nanocellulose. The resulting nanocellulose particles have a transverse size in the range of 5–20 nm, a length of up to several micrometers, and the tensile strength of nanocellulose films is up to 60 MPa. It is shown that the application of nanocellulose to the surface of the samples increases the breaking strength and breaking length, and reduces the surface absorbency of paper. It was determined that with a nanocellulose consumption of up to 3 g/m2, paper samples have indicators that meet the requirements of the standard for paper for packaging food products on automatic machines. Conclusions. The use of nanocellulose from reed stalks as a hardening substance for paper production will allow replacing environmentally harmful polymer additives and up to 50 % of more expensive softwood pulp with waste paper, while maintaining paper quality indicators at the level of standard requirements.

show abstract

“…CNC was prepared by acid-hydrolysis (using 64% by weight H 2 SO 4 ) of the MCC. [29][30][31] The time of hydrolysis was vital to obtain the appropriate properties of the prepared CNC as longer hydrolysis time rendered the breaking of coarse aggregates in the CNC's cellulose matrix leading to larger axial ratios, which is conducive to transparency. [26,32] In a typical experiment, 50 g of MCC was mixed with 50 mL of deionized distilled water and subjected to dropwise addition of 500 mL of 64% by weight H 2 SO 4 for a hydrolysis time of 45 min.…”

Section: Preparation Of Cncmentioning

confidence: 99%

Surface Modification of Polyvinyl Alcohol‐Nanocellulose Composites for Hydrophobic Self‐Cleaning Solar Panel Cover

Khadka

Acharya

Parajuli

et al. 2022

Macromolecular Symposia

View full text Add to dashboard Cite

Cellulose nanocrystal (CNC) and polyvinyl alcohol (PVA) nanocomposites are studied as a green alternative to counteract solar panel soiling. CNC synthesized from acid hydrolysis is blended with PVA, and polybutylene terephthalate (PBT) is blended with powdered silica (SiO2) for surface modification to produce a transparent, hydrophobic, and durable film. The objective is to test the composite film for transparency, hydrophobicity, and durability to determine its suitability as a self‐cleaning solar panel cover. The composite film exhibits an average transmittance of 93% of the incident light in the solar photo‐voltaic working spectra (420–700 nm). Results show an average water contact angle (WCA) of 87.25°, and when subjected to photocatalytic and hydrolytic decay, the film shows minimal changes in the characteristic peaks of the Fourier transform infrared spectroscopy (FTIR) plot of PVA/CNC, confirming its durability. The study points out the prospect of PVA/CNC with PBT/SiO2 film as a transparent, hydrophobic, durable self‐cleaning covers against solar soiling and warranted further research to make suitable properties.

show abstract

Preparation and Applications of the Cellulose Nanocrystal

Cited by 38 publications

References 76 publications

Synthesis of cellulose nanocrystals (CNCs) from cotton using ultrasound-assisted acid hydrolysis

Synthesis of cellulose nanocrystals (CNCs) from cotton using ultrasound-assisted acid hydrolysis

Nanocellulose From Reed Stalks to Improve the Properties of Paper for Packaging Food Products

Surface Modification of Polyvinyl Alcohol‐Nanocellulose Composites for Hydrophobic Self‐Cleaning Solar Panel Cover

Contact Info

Product

Resources

About