Preparation of tough cellulose II nanofibers with high thermal stability from wood

Wang, Haiying; Li, Dagang; Yano, Hiroyuki; Abe, Kentaro

doi:10.1007/s10570-014-0222-6

Cited by 83 publications

(70 citation statements)

References 39 publications

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“…Man et al (2011) prepared cellulose nanocrystals by the ionic liquid method. Wang et al (2014) successfully prepared nanocellulose-II fibers by mechanical fibrillation treatment with cellulose I purified pulps pretreated in 17.5 wt% NaOH. Shankar and Rhim (2016) proposed a facile approach to prepare the nanocellulose from micro-crystalline cellulose using NaOH/urea dissolution combined with ultrasonication.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

Luo¹,

Wang²

2017

BioResources

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A facile method is reported to prepare nanocellulose fibers from oil palm trunk fibers. The fibers were pretreated 2 hours with NaOH/urea solution, and the fully swelled fibers were mechanically treated through highpressure homogenization to obtain nanocellulose. The nanocellulose fibers were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). FTIR results revealed that there was no obvious difference between the spectra of the bleached fibers (BF), pretreated cellulose fibers (PCF), and cellulose nanofibers (NCF), which indicated that the pretreatment process is a non-derivative reaction. The crystallinity of PCF and NCF decreased and contained the cellulose I crystal structure. The PCF presented both a distorted structure and a coarser surface. The resulting NCF were approximately 10 nm to 100 nm in diameter with the length varying from hundreds of nanometers to several micrometers, as observed by SEM. The thermal degradation of NCF was 223 °C with about 20% weight loss, and the maximum degradation temperature was 338 °C. NaOH/urea showed potential as a mild solvent for preparing nanocellulose fibers.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

Luo¹,

Wang²

2017

BioResources

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“…The difference between cellulose I α and I β is in the relative displacement of cellulose chain sheets along the axis, i.e., the packing density of the hydrogen bonded sheets differ significantly 13 . Lattice planes (010) and (020) represent parallel chains and (110) represents the antiparallel chain 16 . Regeneration is the process of solubilizing cellulose I in a solvent, followed by reprecipitation of glucose units to give cellulose II 14 .…”

Section: Introductionmentioning

confidence: 99%

Effect of cellulose nanocrystal polymorphs on mechanical, barrier and thermal properties of poly(lactic acid) based bionanocomposites

et al. 2015

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Electronic Supplementary Information (ESI) available: XRD and FTIR spectra of pretreated bamboo pulp, AFM micrographs and height profiles of CNC I, CNC II and CNC: I→II and their properties (Table S1), XRD spectra for different PLA/CNC polymorph films at 1wt% CNC loading. See Cellulose nanocrystals (CNCs) using different polymorphs of cellulose were fabricated from raw bamboo pulp through alkali treatment followed by acid hydrolysis. The effect of CNC polymorphs, namely CNC I, CNC II and CNC:I→II (CNC II from cellulose I), on its morphology, crystal structure, degree of hydrogen bonding and thermal stability were studied. These polymorphs were dispersed in polylactic acid (PLA) films using casting evaporation approach and their effect on the structural, thermal, mechanical and barrier properties of the PLA were investigated. The CNC polymorphs differ significantly in their reinforcement capability and ability to form percolated network. Incorporation of CNC II and CNC: I→II significantly improved the Young's modulus of composites (by ~72%). However, their elongation at break significantly decreased compared to CNC I, due to high hydroxyl functionality, which forms entangled hydrogen bonded network within the polymer matrix, leading to improvement in mechanical as well as barrier properties. The theoretically calculated moduli of composites using Halpin Kardos, Cox-Krenchel and Ouali models showed good agreement for CNC I,CNC II and CNC:I→II respectively, albeit at higher aspect ratio. All three CNCs showed the capability to form percolated network, the occurrence and stability of which varied with the type of polymorphs. Therefore, the current study provides an insight towards selection of appropriate polymorphs for fabrication of CNC reinforced high performance poly (lactic acid) based bionanocomposites.

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“…Over the past decades, a large number of lignocellulosic biomass has been explored for the generation of cellulose nanofibers (Abe, Iwamoto, & Yano, 2007). The common raw materials used for the production of cellulose nanofibers are wood (Wang, Li, Yano, & Abe, 2014), bamboo (Lu, Lin, Tang, Wang, Chen, Huang, 2015), wheat straw (Chen, Yu, Liu, Hai, Zhang, & Chen, 2011), Phormium tenax (Fortunati et al, 2013), banana peels (Pelissari, Sobral, & Menegalli, 2014;Khawas & Deka, 2016), orange peel waste (Hideno, Abe, & Yano, 2014), date palm fruit stalks (Hassan, Bras, Hassan, Silard, & Mauret, 2014), oil palm empty fruit bunch (Fahma, Iwamoto, Hori, Iwata, & Takemura, 2010), de-pectinated sugar beet pulp (Li, Wang, Li, Cheng, & Adhikari, 2014).…”

mentioning

confidence: 99%

Isolation and characterization of cellulose nanofibers from bamboo using microwave liquefaction combined with chemical treatment and ultrasonication

Xie

Hse

Hoop

et al. 2016

Carbohydrate Polymers

173

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Preparation of tough cellulose II nanofibers with high thermal stability from wood

Cited by 83 publications

References 39 publications

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

Preparation and Characterization of Nanocellulose Fibers from NaOH/Urea Pretreatment of Oil Palm Fibers

Effect of cellulose nanocrystal polymorphs on mechanical, barrier and thermal properties of poly(lactic acid) based bionanocomposites

Isolation and characterization of cellulose nanofibers from bamboo using microwave liquefaction combined with chemical treatment and ultrasonication

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