Eco-friendly superabsorbent polymers based on carboxymethyl cellulose strengthened by TEMPO-mediated oxidation wheat straw cellulose nanofiber

Petroudy, Seyed Rahman Djafari; Ranjbar, Jalal; Garmaroody, Esmaeil Rasooly

doi:10.1016/j.carbpol.2018.06.008

Cited by 59 publications

(14 citation statements)

References 57 publications

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“…The most popular approach to increase the hydrophilic character of nanocellulose is to impart additional charge onto the surface. 559 Nearly always, nanocellulose bears some degree of surface charge directly after production with a certain degree of tailoribility based on reaction conditions. With TEMPOoxidation 79,132,342,560 and periodate oxidation, 503 the surface charge can be varied by up to an order of magnitude, whereas sulfuric acid hydrolysis "harshness" can only affect the degree of sulfation within a relatively small window.…”

Section: Noncovalent Nanocellulose Hydrophilizationmentioning

confidence: 99%

Understanding Nanocellulose–Water Interactions: Turning a Detriment into an Asset

et al. 2023

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Modern technology has enabled the isolation of nanocellulose from plant-based fibers, and the current trend focuses on utilizing nanocellulose in a broad range of sustainable materials applications. Water is generally seen as a detrimental component when in contact with nanocellulose-based materials, just like it is harmful for traditional cellulosic materials such as paper or cardboard. However, water is an integral component in plants, and many applications of nanocellulose already accept the presence of water or make use of it. This review gives a comprehensive account of nanocellulose–water interactions and their repercussions in all key areas of contemporary research: fundamental physical chemistry, chemical modification of nanocellulose, materials applications, and analytical methods to map the water interactions and the effect of water on a nanocellulose matrix.

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Section: Noncovalent Nanocellulose Hydrophilizationmentioning

confidence: 99%

Understanding Nanocellulose–Water Interactions: Turning a Detriment into an Asset

et al. 2023

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“…The wetting of beads prepared with 30% (w/w) CMC saw an enhancement factor of 4.65 for swelling, compared to pristine cellulose beads, demonstrating highly efficient water sorption for the hybrid material. Typically, carboxymethyl cellulose-based hydrogels display a high sorption capacity, desirable for ecological superabsorbent applications [30][31][32]. A comparison of the hybrid hydrogel beads prepared in this paper revealed lower swelling compared to the cross-linked CMC-cellulose sheets prepared by Salleh et al [33] and Chang et al [34], an effect ascribed to the higher cellulose content in the herein-reported beads, as well as the different gel fabrication process employed.…”

Section: Samplementioning

confidence: 60%

Topochemical Engineering of Cellulose—Carboxymethyl Cellulose Beads: A Low-Field NMR Relaxometry Study

Wever

Oliveira‐Silva²,

Marreiros³

et al. 2020

Molecules

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The demand for more ecological, highly engineered hydrogel beads is driven by a multitude of applications such as enzyme immobilization, tissue engineering and superabsorbent materials. Despite great interest in hydrogel fabrication and utilization, the interaction of hydrogels with water is not fully understood. In this work, NMR relaxometry experiments were performed to study bead–water interactions, by probing the changes in bead morphology and surface energy resulting from the incorporation of carboxymethyl cellulose (CMC) into a cellulose matrix. The results show that CMC improves the swelling capacity of the beads, from 1.99 to 17.49, for pure cellulose beads and beads prepared with 30% CMC, respectively. Changes in water mobility and interaction energy were evaluated by NMR relaxometry. Our findings indicate a 2-fold effect arising from the CMC incorporation: bead/water interactions were enhanced by the addition of CMC, with minor additions having a greater effect on the surface energy parameter. At the same time, bead swelling was recorded, leading to a reduction in surface-bound water, enhancing water mobility inside the hydrogels. These findings suggest that topochemical engineering by adjusting the carboxymethyl cellulose content allows the tuning of water mobility and porosity in hybrid beads and potentially opens up new areas of application for this biomaterial.

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“…Recently, Patiño-Masó et al (2019) prepared cellulose nanofibers using oxidation with the same reagent (2,2,6,6-tetramethylpiperidine-1-oxyl) on bleached kraft eucalyptus pulp. Some researchers reported a similar study yielded cellulose nanofibers by the same oxidation approach with the same reagent (Petroudy et al 2018;Iwamoto et al 2011).…”

Section: Isolation Of the Cellulose Nanoparticlesmentioning

confidence: 99%

Renewable cellulosic nanocomposites for food packaging to avoid fossil fuel plastic pollution: a review

et al. 2020

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The extensive use of petroleum-based synthetic and non-biodegradable materials for packaging applications has caused severe environmental damage. The rising demand for sustainable packaging materials has encouraged scientists to explore abundant unconventional materials. For instance, cellulose, extracted from lignocellulosic biomass, has gained attention owing to its ecological and biodegradable nature. This article reviews the extraction of cellulose nanoparticles from conventional and non-conventional lignocellulosic biomass, and the preparation of cellulosic nanocomposites for food packaging. Cellulosic nanocomposites exhibit exceptional mechanical, biodegradation, optical and barrier properties, which are attributed to the nanoscale structure and the high specific surface area, of 533 m2 g−1, of cellulose. The mechanical properties of composites improve with the content of cellulose nanoparticles, yet an excessive amount induces agglomeration and, in turn, poor mechanical properties. Addition of cellulose nanoparticles increases tensile properties by about 42%. Barrier properties of the composites are reinforced by cellulose nanoparticles; for instance, the water vapor permeability decreased by 28% in the presence of 5 wt% cellulose nanoparticles. Moreover, 1 wt% addition of filler decreased the oxygen transmission rate by 21%. We also discuss the eco-design process, designing principles and challenges.

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Eco-friendly superabsorbent polymers based on carboxymethyl cellulose strengthened by TEMPO-mediated oxidation wheat straw cellulose nanofiber

Cited by 59 publications

References 57 publications

Understanding Nanocellulose–Water Interactions: Turning a Detriment into an Asset

Understanding Nanocellulose–Water Interactions: Turning a Detriment into an Asset

Topochemical Engineering of Cellulose—Carboxymethyl Cellulose Beads: A Low-Field NMR Relaxometry Study

Renewable cellulosic nanocomposites for food packaging to avoid fossil fuel plastic pollution: a review

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