Nanocellulose as a Millennium Material with Enhancing Adsorption Capacities

Mahfoudhi, Norhene; Boufi, Sami

doi:10.1002/9781119117360.ch10

Cited by 8 publications

(6 citation statements)

References 57 publications

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“…Concerning its origin and morphological structure, nanocellulose may be differentiated into bacterial cellulose (BC), cellulose nanofibrils (CNFs), and cellulose nanocrystals (CNCs). CNCs are obtained by acid hydrolysis, they have a crystalline structure, and they are needle-shaped and are 150–300 nm in length and 5–10 nm in diameter . Mechanical treatment, such as homogenization or grinding, can transform cellulose fibers into CNFs.…”

Section: Introductionmentioning

confidence: 99%

“…CNCs are obtained by acid hydrolysis, they have a crystalline structure, and they are needle-shaped and are 150− 300 nm in length and 5−10 nm in diameter. 10 Mechanical treatment, such as homogenization or grinding, can transform cellulose fibers into CNFs. These latter have a weblike structure with a diameter of 5−60 nm and a length of several micrometers.…”

Section: ■ Introductionmentioning

confidence: 99%

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3D-Printing Nanocellulose-Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Biodegradable Composites by Fused Deposition Modeling

Giubilini

Siqueira

Clemens

et al. 2020

ACS Sustainable Chem. Eng.

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Fabrication of new biobased composites with remarkable properties offers an attractive pathway for producing environmentally friendly materials. Here, a reinforcement for poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) with functionalized cellulose nanocrystals (CNCs) is presented and used to successfully 3D-print such composites by fused deposition modeling (FDM). Acetylated CNC content varies from 5 to 20 wt % in order to evaluate the effect of the reinforcing agent on thermal and mechanical properties in the composites. The reinforcing effect of CNC is investigated by dynamic mechanical, thermal, and rheological analysis. Thermogravimetric analysis and infrared spectroscopy allow one to assert the success of chemical functionalization, whereas transmission electron microscopy is used to evaluate the impact of chemical modification on the morphology of the crystals. 3D-printability of biobased composites is proved by developing structures of complex designs with a FDM printer. Finally, the degree of disintegration under composting conditions is studied. Findings from these tests serve as an important step forward toward the development of ecofriendly materials for 3D-printing complex architectures with tailored mechanical properties and functionalities.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

3D-Printing Nanocellulose-Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Biodegradable Composites by Fused Deposition Modeling

Giubilini

Siqueira

Clemens

et al. 2020

ACS Sustainable Chem. Eng.

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“…homogenization, grinding, milling), by a combination of these approaches, or also by electrospinning process . In the first case the obtained product is nanocrystalline cellulose (CNC) and, after an acid hydrolysis that breaks down the amorphous region of the cellulose fibrils, the CNC is needle shaped with 150–300 nm in length and 5–10 nm in diameter . Whereas, the product of a mechanical treatment is called nanofibrillated cellulose (NFC) or microfibrillated cellulose (MFC).…”

Section: Introductionmentioning

confidence: 99%

New biocomposite obtained using poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) (PHBH) and microfibrillated cellulose

Giubilini

Sciancalepore

Messori

et al. 2020

J of Applied Polymer Sci

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This research evaluates the effects of filler content and silanization on thermal, morphological and mechanical properties of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH)-based composites. Microfibrillated cellulose (MFC) was obtained by a mechanical treatment of high-pressure homogenization, starting from oat hull fiber, a byproduct of the agri-food sector. MFC reinforced PHBH composites were prepared by melt compounding. SEM and FT-IR analysis showed a good dispersion of the filler in the polymeric matrix, denoting the effectiveness of the surface silanization process. The thermal stability of PHBH composites remains substantially unchanged, and the glass transition temperature marginally increases with the increase of the filler content. Furthermore, silanized MFC shows slightly reinforcing mechanical effects on PHBH composites, such as the increase of 10% of the Young modulus with an increase of the maximum tensile stress as well. This finding has an economical interest since the results showed that MFC, deriving from a byproduct, can be successfully used as filler, decreasing the cost of the bio-based compound leaving substantially unaltered its mechanical and thermal properties.

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“…Basic information on the use of NC and its composites for water purification can be found in several earlier reviews published by Ahankari et al, Carpenter et al, Voisin et al, Tapia-Orozco et al, Mahfoudhi and Boufi, , Abouzeid et al, Köse et al, Mautner, Tan et al., Yuan et al, Ibrahim et al, Wang, Pandey et al, Thomas et al, Ibrahim et al, and Santos et al Interested readers can further explore the following books and book chapters, covering compelling and useful details about NC for water purification, by Kumar, Mathew et al, Muhamad et al, Wilson et al., Gopakumar et al, and Yusuf . However, the chemistry of NC in water remediation is generally absent in these reviews, where the recent reviews of wastewater treatment chemistry did not include the emerging potential of NC. , Furthermore, most of the above reviews focused mainly on the NC applications for a specific field of water purification without paying attention to the holistic approaches of NC extraction and characterization.…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose for Sustainable Water Purification

et al. 2022

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Nanocelluloses (NC) are nature-based sustainable biomaterials, which not only possess cellulosic properties but also have the important hallmarks of nanomaterials, such as large surface area, versatile reactive sites or functionalities, and scaffolding stability to host inorganic nanoparticles. This class of nanomaterials offers new opportunities for a broad spectrum of applications for clean water production that were once thought impractical. This Review covers substantial discussions based on evaluative judgments of the recent literature and technical advancements in the fields of coagulation/flocculation, adsorption, photocatalysis, and membrane filtration for water decontamination through proper understanding of fundamental knowledge of NC, such as purity, crystallinity, surface chemistry and charge, suspension rheology, morphology, mechanical properties, and film stability. To supplement these, discussions on low-cost and scalable NC extraction, new characterizations including solution small-angle X-ray scattering evaluation, and structure− property relationships of NC are also reviewed. Identifying knowledge gaps and drawing perspectives could generate guidance to overcome uncertainties associated with the adaptation of NC-enabled water purification technologies. Furthermore, the topics of simultaneous removal of multipollutants disposal and proper handling of post/spent NC are discussed. We believe NC-enabled remediation nanomaterials can be integrated into a broad range of water treatments, greatly improving the cost-effectiveness and sustainability of water purification.

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Nanocellulose as a Millennium Material with Enhancing Adsorption Capacities

Cited by 8 publications

References 57 publications

3D-Printing Nanocellulose-Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Biodegradable Composites by Fused Deposition Modeling

3D-Printing Nanocellulose-Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) Biodegradable Composites by Fused Deposition Modeling

New biocomposite obtained using poly(3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate) (PHBH) and microfibrillated cellulose

Nanocellulose for Sustainable Water Purification

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