Nanocellulose in Paper and Board Coating

Tozluoğlu, Ayhan; Ateş, Saim; Durmaz, Ekrem; Sertkaya, Selva; Arslan, Recai; Ozcelik, Orhan; Candan, Zeki

doi:10.1007/978-3-031-17378-3_8

Cited by 2 publications

(1 citation statement)

References 436 publications

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“…The characteristics of species of Agave plants show cellulose content higher than wood which ranges 50 to 65% cellulose, and small amorphous content [11]. Chemical treatment is the best way to remove the amorphous structure from natural fibers, so the cellulose with a semi-crystalline region has high tensile strength and elastic moduli [12]. Chemical treatment of natural fibers includes alkalization, bleaching, and sulfuric acid hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

Morphology, Crystallinity and Thermal Properties of Nanocrystalline Cellulose Isolated of Sisal Fiber by Acid Hydrolysis-Ultrasonication

Ferriawan Yudhanto,

Venditias Yudha,

Mohd Ridzuan Mohd Jamir

et al. 2024

IJNeaM

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Nanocrystalline cellulose (NCC) from natural Agave sisalana (Sisal) fibers were isolated using a combination of chemical and mechanical processes. The chemical treatment begins with soaking the fiber in a sodium hydroxide (NaOH) solution with a concentration of 5 wt.% at a temperature of 90°C for 60 minutes. Then following by bleaching (fiber refining) using a hydrogen peroxide solution (H2O2) with a concentration of 3 wt.% (weight), at a temperature of 60°C, and pH of 10 for 30 minutes. It aims to eliminate the presence of hemicellulose and lignin contained in the fiber. Fibrillation Micro into nano Sisal fibers using sulfuric acid (hydrolysis process). Sulfuric acid (H2SO4) with 55 wt.% at temperature 60°C for 30 minutes produced NCC with a diameter of 5±1 nm (D) and a length of 260±10 nm (L), as seen using a TEM (transmission electron microscope). The web-like network structured shape of NCC results in a high aspect ratio (L/D) value is 52. The acid hydrolysis-ultrasonication process produced a high crystallinity index of 78.82% through the XRD (x-ray diffraction) test. The crystallinity and aspect ratio of NCC show that Sisal fiber is a suitable material as a filler for bio-nanocomposite materials. The maximum temperature (Tmax) of NCC decreased by 10°C due to sulfate ions attached to the cellulose structure, causing the thermal stability to drop from 348°C to 338°C.

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Section: Introductionmentioning

confidence: 99%

Morphology, Crystallinity and Thermal Properties of Nanocrystalline Cellulose Isolated of Sisal Fiber by Acid Hydrolysis-Ultrasonication

Ferriawan Yudhanto,

Venditias Yudha,

Mohd Ridzuan Mohd Jamir

et al. 2024

IJNeaM

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Automated trackspinning of aligned lignin fibers as precursors of green carbon nanofibers

et al. 2023

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At present, most carbon fibers are made from non-renewable polyacrylonitrile (PAN). Substantial efforts have been made to replace the need for petroleum-based precursors for carbon fiber production. Interestingly, lignin is a carbon fiber precursor material that is cheap, highly available, and sustainable. Sub-micron scale lignin-based carbon nanofibers could find use in numerous areas, such as electronic devices, batteries, supercapacitors, and low-cost, high performance structural composite materials. Trackspinning (TS) technology offers a way scale the versatile, but inefficient mechanical pulling technique to produce small diameter lignin fibers from environmentally friendly aqueous solutions. In this study, the effects of track spinning based on probe drawing of low concentration lignin nanofibers blended with polyethylene oxide (PEO) and glycerol in sodium hydroxide (NaOH) solution were investigated. TS lignin fibers were well aligned and reached diameters as low as 500-1000 nm as the drawing length was increased. Lignin fiber macromolecular alignment was isotropic at low levels of draw and dichroic ratio was increased from 1 to 2.25 by doubling the drawing length. The most highly drawn track-spun lignin fibers had a mechanical strength of 3.92 MPa and a Young’s Modulus of 2.15 GPa, which were similar to reported values for solvent electrospun lignin nanofibers. These findings support the potential to utilize TS to produce small diameter lignin fibers using a simple aqueous solvent approach.

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Nanocellulose in Paper and Board Coating

Cited by 2 publications

References 436 publications

Morphology, Crystallinity and Thermal Properties of Nanocrystalline Cellulose Isolated of Sisal Fiber by Acid Hydrolysis-Ultrasonication

Morphology, Crystallinity and Thermal Properties of Nanocrystalline Cellulose Isolated of Sisal Fiber by Acid Hydrolysis-Ultrasonication

Automated trackspinning of aligned lignin fibers as precursors of green carbon nanofibers

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