Preparation and Characterization of Cellulose Nanocrystal Extraction From Pennisetum hydridum Fertilized by Municipal Sewage Sludge via Sulfuric Acid Hydrolysis

Yu, Xiaoshan; Jiang, Yu; Wu, Qi‐Tang; Wei, Zebin; Lin, Xianke; Chen, Yangmei

doi:10.3389/fenrg.2021.774783

Cited by 30 publications

(18 citation statements)

References 37 publications

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“…The temperature, reaction time, and sulfuric acid mass fraction affect the hydrolysis efficiency. Yu et al explain this dependence in their work [ 48 ]. The reaction yield of the obtained nanocrystalline cellulose was 32 and 39% for cellulose fibrils and microcrystalline cellulose, respectively.…”

Section: Resultsmentioning

confidence: 99%

Chitosan-Gelatin Films Cross-Linked with Dialdehyde Cellulose Nanocrystals as Potential Materials for Wound Dressings

Węgrzynowska-Drzymalska

Mlynarczyk

Chełminiak-Dudkiewicz

et al. 2022

IJMS

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In this study, thin chitosan-gelatin biofilms cross-linked with dialdehyde cellulose nanocrystals for dressing materials were received. Two types of dialdehyde cellulose nanocrystals from fiber (DNCL) and microcrystalline cellulose (DAMC) were obtained by periodate oxidation. An ATR-FTIR analysis confirmed the selective oxidation of cellulose nanocrystals with the creation of a carbonyl group at 1724 cm−1. A higher degree of cross-linking was obtained in chitosan-gelatin biofilms with DNCL than with DAMC. An increasing amount of added cross-linkers resulted in a decrease in the apparent density value. The chitosan-gelatin biofilms cross-linked with DNCL exhibited a higher value of roughness parameters and antioxidant activity compared with materials cross-linked with DAMC. The cross-linking process improved the oxygen permeability and anti-inflammatory properties of both measurement series. Two samples cross-linked with DNCL achieved an ideal water vapor transition rate for wound dressings, CS-Gel with 10% and 15% addition of DNCL—8.60 and 9.60 mg/cm2/h, respectively. The swelling ability and interaction with human serum albumin (HSA) were improved for biofilms cross-linked with DAMC and DNCL. Significantly, the films cross-linked with DAMC were characterized by lower toxicity. These results confirmed that chitosan-gelatin biofilms cross-linked with DNCL and DAMC had improved properties for possible use in wound dressings.

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Section: Resultsmentioning

confidence: 99%

Chitosan-Gelatin Films Cross-Linked with Dialdehyde Cellulose Nanocrystals as Potential Materials for Wound Dressings

Węgrzynowska-Drzymalska

Mlynarczyk

Chełminiak-Dudkiewicz

et al. 2022

IJMS

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 54%

“…From Figure 2a, the appearance of new peaks at 874 and 811 cm -1 was only observed in the nanocellulose sample representing C-O-SO 3 group vibration, attributed to the presence of sulfonate esters on the nanocellulose surface during sulphuric acid hydrolysis [45,46]. Several other bands related to sulfonate esters were also reported in the literature ranging from 1350 to 750 cm -1 [45]. Due to the increase in the surface area of nanocellulose compared to viscose, it was expected that the peak intensity around 3330 cm -1 should be higher for nanocellulose because of more free hydroxyls (-OH) at the surface.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

Valorization of nylon and viscose-rayon textile yarn wastes for fabricating nanocomposite films

Mishra¹,

Ahuja²,

Mahur³

et al. 2023

Express Polym. Lett.

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In this work, two types of pre-consumer textile waste, namely, viscose-rayon and nylon yarn, were utilized for nanocomposite filmmaking using the green solvent casting method. The nanocellulose was extracted from the viscose-rayon and incorporated as a filler in nylon films. The effects of nanocellulose on thermal, chemical, mechanical, structural, and barrier properties of films containing 0.1, 0.5, and 1 wt% nanocellulose were investigated in detail. The thermal study of films using differential scanning calorimetry (DSC) confirmed that adding nanocellulose into the nylon matrix does not act as a nucleating agent as nylon yarn waste already had ~5 wt% nucleating agents (thermogravimetric analysis, TGA). Rather, a decrease in the crystallinity of films was determined with the addition of nanocellulose. No significant changes in the mechanical properties were observed for nylon nanocomposite films. However, an increased hydrogen bonding was observed between the nanocellulose and nylon, along with the reorientation of hydrogen bonds (Fourier-transform infrared spectroscopy, FTIR). A dense cross-section and structured surface were observed in the scanning electronmicroscopic (SEM) images for nanocomposite films. The water vapor barrier of films increased as the concentration of nanocellulose increased in the nylon films and resulted in a 55% decrease in water vapor transmission rate (WVTR) compared to neat nylon film.

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“…The peaks at 1731 and 1250 cm –1 completely disappeared for the treated fiber to extract crystalline CNFs, demonstrating that hemicellulose and lignin were successfully washed out during bleaching and hydrolysis of raw cotton. Additionally, a band at 1373 cm –1 is attributed to the twisting vibration of C–H in the aromatic ring, and a band at 896 cm –1 belongs to the symmetric stretching of the glycosidic linkage, which had been reduced in intensity for CNFs. , …”

Section: Resultsmentioning

confidence: 99%

Preparation of Cellulose Hydrogels and Hydrogel Nanocomposites Reinforced by Crystalline Cellulose Nanofibers (CNFs) as a Water Reservoir for Agriculture Use

Das

Bhattacharjee

Bhaladhare

2023

ACS Appl. Polym. Mater.

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An effective strategy for the management of available water and fertilizers is imperative to improve agricultural production and food quality, including releasing them sustainably to the soil and plants. Polymeric hydrogels with three-dimensional (3D) networks can absorb ample water and soluble fertilizers without network dissolution. Subsequently, the absorbed water and fertilizers can be released to arid and semi-arid agricultural land to furnish enough moisture and nutrients for plant growth. In this study, carboxymethyl cellulose sodium salt (NaCMC)- and hydroxyethyl cellulose (HEC)-based hydrogels have been synthesized using citric acid (CA) as a crosslinker. The Fourier transform infrared (FTIR) spectroscopy study revealed the formation of hydrogels with porous structures depicted by field emission scanning electron microscopy images. The prepared hydrogels have shown a remarkable swelling ratio of ∼1070% for the hydrogel prepared using NaCMC/HEC: 2/1 and ∼840% for NaCMC/HEC: 3/1 and a reduction in the swelling ratio with increasing crosslinking density. Moreover, crystalline (shown by X-ray diffraction) cellulose nanofibers (CNFs: ∼600 nm), prepared by acid (H2SO4) hydrolysis of cotton fibers, have been used to prepare hydrogel nanocomposites. The evaluation of hydrogel nanocomposites’ mechanical properties (universal testing matching test) depicted an improved tensile strength (16.27 MPa using 0.7% CNFs) compared to that of the hydrogel without CNFs. The soil burial test for biodegradation study of prepared hydrogels revealed soil degradation of hydrogel, confirmed by FTIR analysis and visual appearance. The current study provides comprehensive data establishing the potential of hydrogels for agriculture applications.

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Preparation and Characterization of Cellulose Nanocrystal Extraction From Pennisetum hydridum Fertilized by Municipal Sewage Sludge via Sulfuric Acid Hydrolysis

Cited by 30 publications

References 37 publications

Chitosan-Gelatin Films Cross-Linked with Dialdehyde Cellulose Nanocrystals as Potential Materials for Wound Dressings

Chitosan-Gelatin Films Cross-Linked with Dialdehyde Cellulose Nanocrystals as Potential Materials for Wound Dressings

Valorization of nylon and viscose-rayon textile yarn wastes for fabricating nanocomposite films

Preparation of Cellulose Hydrogels and Hydrogel Nanocomposites Reinforced by Crystalline Cellulose Nanofibers (CNFs) as a Water Reservoir for Agriculture Use

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