Recent Development in Applications of Cellulose Nanocrystals for Advanced Polymer-Based Nanocomposites by Novel Fabrication Strategies

Wu, Qinglin

doi:10.5772/48727

Cited by 48 publications

(36 citation statements)

References 73 publications

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“…Alkali treatment consisted of removing the hydroxyl groups by reaction with sodium hydroxide, consequently it is observed the increasing of the concentration of OH -groups, this mecanism is confirmed by ftir analysis by increasing of the peak intensity between 3300 and 3500 cm -1 attributed to the stretching vibration of OH group compared to this peak intensity of the raw fibers [16]. The peak at arrange to 1460 cm -1 reflected the C-C=C groups vibration of lignin, it reported that the intensity of this peak decreased after alkali treatment and vanished after bleached treatment which indicates the elimination of a most important portion of lignin [7]. The C-O-C glycosidic symmetric stretching and C-OH stretching vibration of cellulose backbone are at 1100 and at 1050 cm -1 , respectively.…”

Section: Infrared Spectroscopysupporting

confidence: 67%

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Extraction and Characterization of Nanocrystalline Cellulose from Doum (Chamaerops humilis) Leaves: A Potential Reinforcing Biomaterial

et al. 2016

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The aim of this investigation was to extract nanocrystalline cellulose (NCC) from Moroccan Doum fibers (Chamaerops humilis) by chemical treatment to examine their potential for use as reinforcement fibers in bionanocomposite applications. The chemical composition, morphological and structural properties of the Doum fibers was determined at different stages of chemical treatment. Morphological (transmission electron microscopy and scanning electron microscopy), structural characterization (X-ray diffraction, Fourier transformed infrared), thermal characterization (thermogravimetric analysis). The suspension electrostatic stabilization (zeta potential) of NCCs was also carried out. The results of these characterization analysis found that average size of the NCC is 220 nm in length and 11 nm in diameter, with high crystallinity index (93 %), a thermal stability comparable to that of untreated Doum fibers (degradation temperature 340°C), which is reasonably promising for the use of these nanofibers in reinforced-polymer manufacturing, and a good stability in water suspension that it allows their utilization such as reinforcement of the water-soluble polymers to prepare the bio-nanocomposite.

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Section: Infrared Spectroscopysupporting

confidence: 67%

“…Thus, the NCC as reinforcement in the polymeric matrix has several advantages such as their high specific area, great aspect ratio, low density, biodegradability, renewability and low energy consumption in the extraction process [7,8].…”

Section: Introductionmentioning

confidence: 99%

Extraction and Characterization of Nanocrystalline Cellulose from Doum (Chamaerops humilis) Leaves: A Potential Reinforcing Biomaterial

et al. 2016

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“…Therefore, it could easily lead to the conclusions that suspensions with 0.300 and 0.382 wt% CNC were heterogeneous, and formed Mechanical behavior of CA and CA/CNC nanofiber nonwoven meshes Electrospun fibers form nonwoven meshes. Their mechanical properties are strongly influenced by several factors, including individual fiber property, fiber orientation, morphology, porosity, bonding between fibers and slip of one fiber over another (Wang et al 2004;Zhou and Wu 2012). Due to the difficulties in handling CA nonwoven meshes and measuring small load for deformation, limited amount of work has been done to study mechanical behavior of CA nanofabrics.…”

Section: Selection Of Operational Conditionsmentioning

confidence: 99%

Investigation of nanofiber nonwoven meshes produced by electrospinning of cellulose nanocrystal suspensions in cellulose acetate solutions

2015

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The development of nonwoven meshes based on cellulose acetate (CA) reinforced by cellulose nanocrystals (CNC) is reported. The meshes were electrospun from 15 wt% CA (M n = 30,000) in dimethylacetamide/acetone (1:2, w/w) solutions with various concentrations of CNC dispersions. The investigated six levels of CNC dispersions in CA solutions were: 0, 0.075, 0.147, 0.225, 0.300 and 0.382 wt%, which corresponded to 0, 0.50, 1.00, 1.50, 1.99 and 2.55 wt% of CNC in solid fibers. The basis of the impact of CNC nano-particles on fiber diameter and morphology was explored by assessing their contributions to the viscosity, conductivity and homogeneity of CA/CNC solutions. CA/CNC nonwoven meshes spun from suspensions with 0.075 wt% CNC had best results in morphology and fiber uniformity. Additionally, mechanical properties of CA nonwoven meshes with five levels of CNC loading (0, 0.50, 1.00, 1.50 and 1.99 wt%) were examined. The CA nonwoven mesh with 0.50 wt% CNC showed best mechanical properties, and its elastic modulus (E) was improved to an average value of 1.68 GPa from 1.17 GPa of neat CA nanofiber nonwoven mesh. These improved meshes would have applications such as separation membranes, supports for catalysts and sensors, engineered tissues and other smart materials.

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“…The specific Young's modulus of cellulose crystals has found to be greater than the steel. Thus, by varying CNC composition through polymer matrix blending, physical properties such as robustness, flexibility, durability, weight and transparency could be tuned for various high-performance structural applications (Zhou and Wu, 2012;Boufi et al, 2014). The tensile modulus and strength of polyacrylonitrile (PAN) polymer was found to be increased from 14.5 to 19.6 GPa and from 624 to 709 MPa respectively, as CNC loading increased from 0 to 10 (wt %) (Chang et al, 2015).…”

Section: Biological Applicationsmentioning

confidence: 99%

“…CNC-based barrier films have potential applications in batteries, filtration devices, and packaging, and paper products (Khan et al, 2012;Zhou and Wu, 2012;Lalia et al, 2013). These CNC-based packaging materials could be used for prolonging the shelf-life of pharmaceutical, food and drink products, protecting against physical, biochemical, and microbiological degradation and deterioration (Nair et al, 2014).…”

Section: Biochemical: "Green" Barrier Filmsmentioning

confidence: 99%

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

Sinha¹,

Martin²,

Lim³

et al. 2015

Journal of Biosystems Engineering

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Background: Cellulose is a ubiquitous, renewable and environmentally friendly biopolymer, which has high promise to fulfil the rising demand for sustainable and biocompatible materials. Particularly, the recent progress in the synthesis of highly crystalline cellulose-based nanoscale biomaterials, namely cellulose nanocrystals (CNCs), draws significant attention from many research communities, ranging from bioresource engineering, to materials science and engineering, to biological and biomedical engineering to bionanotechnology. The feasibility of harnessing CNCs' unique biophysicochemical properties has inspired their basic and applied research, offering much promise for new biomaterials with diverse advanced functionalities. Purpose: This review focuses on vital issues and topics on the recent advances in CNC-based biomaterials with potential, in particular, for bionanotechnology and biological and biomedical engineering. The challenges and limitations of CNC technology are discussed as well as potential strategies to overcome them, providing an essential source of information in the exploration of possible and futuristic applications of the CNC-based functional "green" nanomaterials. Conclusion: CNCs offer exciting possibilities for advanced "green" nanomaterials, driving innovative research and development in a wide range of fields, including biological and biomedical engineering.

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Recent Development in Applications of Cellulose Nanocrystals for Advanced Polymer-Based Nanocomposites by Novel Fabrication Strategies

Cited by 48 publications

References 73 publications

Extraction and Characterization of Nanocrystalline Cellulose from Doum (Chamaerops humilis) Leaves: A Potential Reinforcing Biomaterial

Extraction and Characterization of Nanocrystalline Cellulose from Doum (Chamaerops humilis) Leaves: A Potential Reinforcing Biomaterial

Investigation of nanofiber nonwoven meshes produced by electrospinning of cellulose nanocrystal suspensions in cellulose acetate solutions

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

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