Nanocellulose prepared by acid hydrolysis of isolated cellulose from sugarcane bagasse

Wulandari, Winda Trisna; Rochliadi, Achmad; Arcana, I Made

doi:10.1088/1757-899x/107/1/012045

Cited by 268 publications

(195 citation statements)

References 19 publications

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“…were attributed to hydrogen bonded hydroxyl (OH) groups of cellulose and absorbed water and aliphatic saturated C-H stretching vibration, respectively [26][27][28][29][30]. These peaks increased in intensity after bleaching and TEMPO oxidation.…”

Section: Ftir Spectroscopy Analysis the Analysis Of Functional Groupmentioning

confidence: 99%

Nanofibrillated Cellulose from Appalachian Hardwoods Logging Residues as Template for Antimicrobial Copper

Hassanzadeh

Sabo

Rudie

et al. 2017

Journal of Nanomaterials

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TEMPO nanofibrillated cellulose (TNFC) from two underutilized Appalachian hardwoods, Northern red oak (Quercus rubra) and yellow poplar (Liriodendron tulipifera), was prepared to determine its feasibility to be used as template for antimicrobial metallic copper particles. In addition, a comparison of the TNFC from the two species in terms of their morphological, chemical, thermal, and mechanical properties was also performed. The woody biomass was provided in the form of logging residue from Preston County, West Virginia. A traditional kraft process was used to produce the pulp followed by a five-stage bleaching. Bleached pulps were then subjected to a TEMPO oxidation process using the TEMPO/NaBr/NaClO system to facilitate the final mechanical fibrillation process and surface incorporation of metallic copper. The final TNFC diameters for red oak and yellow poplar presented similar dimensions, 3.8 ± 0.74 nm and 3.6 ± 0.85 nm, respectively. The TNFC films fabricated from both species exhibited no statistical differences in both Young's modulus and the final strength properties. Likely, after the TEMPO oxidation process both species exhibited similar carboxyl group content, of approximately 0.8 mmol/g, and both species demonstrated excellent capability to incorporate antimicrobial copper on their surfaces.

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Section: Ftir Spectroscopy Analysis the Analysis Of Functional Groupmentioning

confidence: 99%

Nanofibrillated Cellulose from Appalachian Hardwoods Logging Residues as Template for Antimicrobial Copper

Hassanzadeh

Sabo

Rudie

et al. 2017

Journal of Nanomaterials

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“…Although cellulose‐II is normally produced by alkali treatment of cellulose‐I, the acidic treatment at room temperature led to the same result in the present study. Indeed, preparation of cellulose‐II by hydrolysis of sugarcane bagasse in 50% sulfuric acid at 40 °C has been reported, whereas normally cellulose‐I is formed at higher temperatures and acid concentrations . Segal crystallinity of nanocellulose was determined to be approximately 69% by using the formula C l = [( I 110 – I am )/ I 110 ] × 100%, where I 110 = 19.8° and I am taken at 16.3° after the baseline was subtracted …”

Section: Resultsmentioning

confidence: 99%

Effect of nanocrystalline cellulose addition on needleless alternating current electrospinning and properties of nanofibrous polyacrylonitrile meshes

Paulett

Brayer

Hatch

et al. 2017

J of Applied Polymer Sci

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Needleless alternating current (AC)-electrospinning is capable of achieving high nanofiber generation rates while adding more flexibility to the process development when compared to common direct current (DC)-electrospinning. However, ACelectrospinning process may produce very different results than DC-electrospinning when using the same precursors. This study demonstrated that stable AC-electrospinning of uniform and mechanically strong polyacrylonitrile (PAN) nanofibrous meshes can be achieved at 30 6 5 kV rms voltage when 0.75-6.0 wt % of nanocrystalline cellulose-II with respect to PAN is added to a typical PAN precursor solution. Efficient generation (up to 2 g/h rate or 0.7 g h 21 cm 22 mass flux) of nanofibers with 250-500 nm fiber diameters has been observed when using flat fiber-generating electrodes with diameters up to 25 mm. Depending on the amount of nanocellulose, nanofibrous nanocellulose/PAN meshes revealed large variations in tensile modulus (90-273 MPa) and yield strength (1.0-2.5 MPa), whereas the fiber diameter, air permeability, air resistance, mesh porosity, and water absorption were less affected. V C 2017Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45772.

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“…Cellulose nanofibers are characterized by a short-rod-like shape less than 100 nm in diameter and several micrometers in length with ordered regions ( Figure 5), induced by the linear nature of the cellulose polymers and the extensive intermolecular attractions between adjacent chains [108]. Cellulose nanofibers can be extracted from different natural sources [109] (wood or non-woody plants [110]), by mechanical treatment [111], acid hydrolysis (the most-used method) [112], or a combination of the two [113]. Acid hydrolysis can be assisted by ultrasonic treatment (sonication) [114,115] and enzymatic hydrolysis [116].…”

Section: Nanocellulosementioning

confidence: 99%

“…Acid hydrolysis leads to agglomerated cellulose in the micrometer scale, which can be reduced to nanofibers in the nm scale by high pressure homogenization [118] due to the shear forces caused by the high velocity and pressure on the micro- Acid hydrolysis is an easy and fast method to produce nanocellulose. A strong acid such as H2SO4 or HCl is commonly used to break the glycoside bonds in cellulose under controlled conditions (acid concentration, time, temperature, and acid/cellulose ratio) [117], a process which is stopped by dilution with water followed by washing/dialysis to remove free acid molecules and drying of the suspension to yield solid nano-cellulose [112]. Acid hydrolysis leads to agglomerated cellulose in the micrometer scale, which can be reduced to nanofibers in the nm scale by high pressure homogenization [118] due to the shear forces caused by the high velocity and pressure on the micro-suspension of cellulose nanofibers [119,120].…”

Section: Nanocellulosementioning

confidence: 99%

Vegetable Additives in Food Packaging Polymeric Materials

Munteanu

Vasile

2019

Polymers

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Plants are the most abundant bioresources, providing valuable materials that can be used as additives in polymeric materials, such as lignocellulosic fibers, nano-cellulose, or lignin, as well as plant extracts containing bioactive phenolic and flavonoid compounds used in the healthcare, pharmaceutical, cosmetic, and nutraceutical industries. The incorporation of additives into polymeric materials improves their properties to make them suitable for multiple applications. Efforts are made to incorporate into the raw polymers various natural biobased and biodegradable additives with a low environmental fingerprint, such as by-products, biomass, plant extracts, etc. In this review we will illustrate in the first part recent examples of lignocellulosic materials, lignin, and nano-cellulose as reinforcements or fillers in various polymer matrices and in the second part various applications of plant extracts as active ingredients in food packaging materials based on polysaccharide matrices (chitosan/starch/alginate).In this review various recent applications of plant-based additives (lignocellulosic fibers/nano-cellulose as well as bioactive plant extracts) as reinforcements and active ingredients in food packaging materials are illustrated. Natural polysaccharide biopolymers (such as chitosan/starch/alginate) are nontoxic, biodegradable, biocompatible, and largely used in food packaging: Chitosan is known for its broad antimicrobial activity and its excellent film-forming properties; alginates have good film-forming properties, retain moisture, reduce microbial counts, and retard oxidative off-flavors; and starch is also particularly important for its cheap price and its frequency in nature. For these reasons, this review will present applications of plant extracts as active ingredients in natural polysaccharide biopolymers: chitosan/starch/alginate. Classification of Natural Biodegradable Polymers and AdditivesNatural biodegradable polymers and additives are polymers formed naturally by the living organisms by enzyme-catalyzed reactions and reactions of chain growth from monomers which are formed inside the cells by complex metabolic processes [5].Natural additives can be high molecular weight (natural polymers), such as proteins (collagen, silk, and keratin), carbohydrates (starch and glycogen), lignin, cellulose, high molecular weight phenolics (tannins and derivatives), and low molecular weight active substances, such as cold-pressed oils, essential oils (organic volatile compounds, generally of low molecular weight,

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Nanocellulose prepared by acid hydrolysis of isolated cellulose from sugarcane bagasse

Cited by 268 publications

References 19 publications

Nanofibrillated Cellulose from Appalachian Hardwoods Logging Residues as Template for Antimicrobial Copper

Nanofibrillated Cellulose from Appalachian Hardwoods Logging Residues as Template for Antimicrobial Copper

Effect of nanocrystalline cellulose addition on needleless alternating current electrospinning and properties of nanofibrous polyacrylonitrile meshes

Vegetable Additives in Food Packaging Polymeric Materials

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