Novel processing parameters for the extraction of cellulose nanofibres (CNF) from environmentally benign pineapple leaf fibres (PALF): Structure-property relationships

Ravindran, Lakshmipriya; Sreekala,; Thomas, Sabu

doi:10.1016/j.ijbiomac.2019.03.134

Cited by 109 publications

(37 citation statements)

References 96 publications

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“…The reduction in the diameter of CNF-PP 1.0M , CNF-PP 3.8M and CNF-PP 5.6M were caused by the removal of lignin, hemicellulose, and the non-cellulosic parts of Napier, through the alkaline treatments (preand post-), acid hydrolysis and ball milling treatments. The morphology results of the CNF-PP 1.0M , CNF-PP 3.8M and CNF-PP 5.6M samples in this study correlated well with the dimensions of the CNFs from kenaf (1-40 nm) [41], banana peel (20-50 nm) [24], cotton (20-80 nm) [19], and pineapple leaf fibers (20-50 nm) [38].…”

Section: Particle Size Measurementsupporting

confidence: 78%

“…They conclude that the isolation of CNFs is inexpensive and nanofibers with excellent properties can be obtained [ 37 ]. The extraction of CNFs from pineapple leaf fibers (PALF) had been studied by Lakshmipriya et al where the fibers were subjected to acid hydrolysis with 50% of sulfuric acid, and further ball-milled the suspension for 1.5 and 3 h. They found that the extraction process is environmentally sustainable and economical for the fabrication of good-quality CNF [ 38 ]. Lastly, Kittiya et al had investigated the effect of sulfuric acid concentration on sugarcane bagasse fibers.…”

Section: Introductionmentioning

confidence: 99%

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Structural, Morphological and Thermal Properties of Cellulose Nanofibers from Napier fiber (Pennisetum purpureum)

et al. 2020

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The purpose of the study is to investigate the utilisation of Napier fiber (Pennisetum purpureum) as a source for the fabrication of cellulose nanofibers (CNF). In this study, cellulose nanofibers (CNF) from Napier fiber were isolated via ball-milling assisted by acid hydrolysis. Acid hydrolysis with different molarities (1.0, 3.8 and 5.6 M) was performed efficiently facilitate cellulose fiber size reduction. The resulting CNFs were characterised through Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), particle size analyser (PSA), field-emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), and transmission electron microscopy (TEM). The FTIR results demonstrated that there were no obvious changes observed between the spectra of the CNFs with different molarities of acid hydrolysis. With 5.6 M acid hydrolysis, the XRD analysis displayed the highest degree of CNF crystallinity at 70.67%. In a thermal analysis by TGA and DTG, cellulose nanofiber with 5.6 M acid hydrolysis tended to produce cellulose nanofibers with higher thermal stability. As evidenced by the structural morphologies, a fibrous network nanostructure was obtained under TEM and AFM analysis, while a compact structure was observed under FESEM analysis. In conclusion, the isolated CNFs from Napier-derived cellulose are expected to yield potential to be used as a suitable source for nanocomposite production in various applications, including pharmaceutical, food packaging and biomedical fields.

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Section: Particle Size Measurementsupporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Structural, Morphological and Thermal Properties of Cellulose Nanofibers from Napier fiber (Pennisetum purpureum)

et al. 2020

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“…On the other hand, yield% (y 2 ) was affected more prominently by temperature (x 3 ) and time (x 2 ) rather than the power (x 1 ) itself. Model validation with analysis of variance (ANOVA) test was carried out to check the adequacy of the proposed polynomial Equations (2) and (3). Theoretical optimization to obtain maximum CrI% (y 1 ) and yield% (y 2 ) was done.…”

Section: Discussionmentioning

confidence: 99%

“…The magnitudes of standard deviation observed here for both the models were relatively smaller. Furthermore, the values for coefficient of variation (CV) were also only 1.22 and 1.06 for the empirical models Equations (2) and (3). This represents the reproducibility of the experimental data with the developed model.…”

Section: Analysis Of Variance (Anova) Test and Statistical Analysismentioning

confidence: 91%

“…Application of renewable lignocellulosic feedstock to produce nanocellulose has gained extensive interest over the last few decades. Cellulose nano-whiskers (CNWs) can exhibit some unique features of having low density, high aspect ratio with extended surface area, tunable surface chemistry containing negative hydroxyl groups (-OH) with biodegradability and superior thermal and mechanical properties [1][2][3][4]. They are considered as a promising candidate for versatile application in opto-electronic devices, smart composite materials for environmental as well as biomedical application [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Extraction of Cellulose Nano-Whiskers Using Ionic Liquid-Assisted Ultra-Sonication: Optimization and Mathematical Modelling Using Box–Behnken Design

et al. 2019

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This study focuses on the extraction of cellulose nano-whiskers (CNWs) from the leaves of Adansonia kilima (AK), usually known as African baobab, using a combination of a microwave-assisted alkali (KOH) pre-treatment with subsequent bleaching process prior to ultra-sonication. Ultra-sonication was carried out using the ionic liquid (IL) 1-butyl-3-methylimidazolium hydrogen sulfate (Bmim-HSO4). Process parameters for ultra-sonication were optimized using a two-level factorial Box–Behnken design (BBD). Process variables such as ultra-sonication power (x1), hydrolysing time (x2) and temperature (x3) were varied. Responses selected were percentage crystallinity index, CrI% (y1) and yield% (y1) for the finally procured CNWs sample. Regression analysis was carried out to develop quadratic model to analyze the effect of process variables on IL-assisted ultra-sonication process. Analysis of variance (ANOVA) showed that ultra-sonication power was the most influential aspect for hydrolyzing the amorphous segments of crude cellulose extracted from baobab leaves. A relative study of the physio-chemical properties of the starting lignocellulosic substrate (AK), KOH pre-treated, bleached and IL-assisted ultra-sonicated CNWs was conducted. The synthesized samples were characterized using Fourier transform infrared spectroscopy, Scanning electron microscopy, atomic force microscopy, high resolution transmission electron microscopy, X-ray diffraction and thermo-gravimetric and zeta potential analysis. Under optimum condition, the extracted CNWs showed an average width of 15–20 nm; with high crystallinity index of 86.46%. This research provides an insight about the delignification of Adansonia kilima (AK) leaves and its effective conversion to CNWs having high crystallinity.

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Full‐Component Utilization of Cellulose Nanofibrils and Artificial Stone Waste for Cement Enhancement

Zhou,

Huang,

Yang

et al. 2024

Adv Eng Mater

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With the concept of carbon neutrality, the value‐added utilization of biomass materials and solid waste becomes a cutting‐edge topic. Cellulose nanofibrils (CNFs) receive much attention due to their excellent properties in terms of high aspect ratio, specific strength, and specific surface area, but their large‐scale preparation remains a great challenge. Herein, a facile aqueous solution method is proposed for the fabrication of CNFs through artificial stone waste (ASW)‐assisted supramolecular interfacial interactions for the full‐component utilization in cement mortar materials. The strong hydrogen bonding interaction between ASW and CNFs can effectively prevent the intramolecular hydrogen bonding of CNFs and agglomeration of ASW, while improving the stability of CNF/ASW suspensions. The resulting CNFs/ASW with active hydroxyl or carboxyl group can improve the flexural and compressive strength of cement (30.8% and 37.8% higher than that of pristine cement, respectively) by embedding into the defects of cement mortar and promoting the hydration process of cement. In this work, not only a new idea is provided for the large‐scale preparation of biomass nanomaterials, but also the full‐component value‐added utilization of biomass and solid waste in cement materials is opened up.

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Novel processing parameters for the extraction of cellulose nanofibres (CNF) from environmentally benign pineapple leaf fibres (PALF): Structure-property relationships

Cited by 109 publications

References 96 publications

Structural, Morphological and Thermal Properties of Cellulose Nanofibers from Napier fiber (Pennisetum purpureum)

Structural, Morphological and Thermal Properties of Cellulose Nanofibers from Napier fiber (Pennisetum purpureum)

Extraction of Cellulose Nano-Whiskers Using Ionic Liquid-Assisted Ultra-Sonication: Optimization and Mathematical Modelling Using Box–Behnken Design

Full‐Component Utilization of Cellulose Nanofibrils and Artificial Stone Waste for Cement Enhancement

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