Nanocrystalline cellulose isolated from discarded cigarette filters

Ogundare, Segun A.; Moodley, Vashen; Zyl, Werner E. van

doi:10.1016/j.carbpol.2017.08.008

Cited by 55 publications

(28 citation statements)

References 39 publications

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“…All peaks for nanocellulose were consistent with reported values in the region assigned (n/cm À1 ) as: 3320 (O-H), 2900 (C-H asym), 1646 (H-O-H bend), 1437 (CH 2 symm), 1371 (C-H asym bend), 1018 (C-O-C) and 898 (C-H deform) modes of the b-glycosidic linkage between the anhydroglucose rings. 63 These results were consistent with the cellulose structure which suggests that the method of growing pure cellulose as well as the production and isolation of nanocellulose from bacterial cellulose was successfully demonstrated.…”

Section: Ft-ir and Raman Spectroscopy Studiessupporting

confidence: 81%

“…S5 † (dialysis). The dimensions nevertheless correlate well with NCC isolated from waste products 63 and natural hardwood pulp 64 -the ideal aspect ratio required for good stress transfer within the interaction between bers and matrix to provide strong reinforcement and mechanical stability when included in a polymer composite is 10, and the aspect ratio of the bacterial nanocrystals reported here lie close to the ideal stress transfer minimum. 65…”

Section: Tem Studiessupporting

confidence: 60%

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Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

et al. 2020

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Section: Ft-ir and Raman Spectroscopy Studiessupporting

confidence: 81%

Section: Tem Studiessupporting

confidence: 60%

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

et al. 2020

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“…In the temperature range from 250 °C to 450 °C, the degradation step with 80% of mass lost took place; this degradation step concerns the deacetylation process of CA with maximum rate of degradation corresponding to the temperature of 367 °C. The residue of measurements is 9% of initial weight [ 13 ]; while in Figure 3 b TG curves at 10 °C/min under the inert flow and corresponding derivative and second derivative curves for recovered CA sample are reported. Compared to the previous graph, it is possible to observe that the first degradation step noticed for unused CA, in this case is absent.…”

Section: Resultsmentioning

confidence: 99%

“…Ghosh et al displayed how pyrolysis treatment produces a material with good conductive properties which can be further used in different electronic fields [ 11 ]; while Gomez Escobar et al demonstrated the high sound absorption performance of this material and the potential use of CBs as a component for insulating solutions, which were observed to be competitive even with sale solutions [ 12 ]. Ogundare et al produced NCC from discarded cigarette filters (DCF) [ 13 ]. The DCF were treated through an ethanolic extraction, a bleaching in sodium hypochlorite, followed by an alkaline deacetylation, and converted into NCC by sulfuric acid hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

A Clean Process for Obtaining High-Quality Cellulose Acetate from Cigarette Butts

2020

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The main purpose of this study is to introduce a modified method for recovering and recycling huge number of cigarette butts (CBs) and convert them into a fashion product. CBs are non-biodegradable waste, generally, discarded improperly into the environment. CBs consist of cellulose acetate, which can be recovered through extraction and purification processes. CBs are the most numerically frequent form of waste in the world. A relevant portion of CBS are discarded improperly into the environment. The principal filter components are plasticized cellulose acetate fibers that have the slowest degradation rate (up to years). In fact, a limiting step is the hydrolysis of cellulose acetate polymer into cellulose and acetic acid, which is extremely slow under ambient conditions and represents a relevant environmental risk. A number of studies have been realized on recycling cigarette butts with encouraging results, and several methods have been studied, including recycling of cigarette butts in asphalt concrete and fired clay bricks, as a carbon source, sound-absorbing material, corrosion inhibitor, biofilm carrier, and many more. In this study, we propose a novel, green, low cost, simple, and efficient extraction method of cellulose acetate fibers (CA) from discarded cigarette butts (DCBs). CBs extraction procedure involves a two-step process consisting of washings in water and some subsequent washings in ethanol. The obtained samples of CA are dried at 60 °C for 60 min in the oven. The quality and properties of cellulose acetate extracted and purified are comparable to the pure cellulose acetate fiber used for cigarette butts. The preliminary results obtained on the recovered CA look promising to the use of this recovery material from cigarette butts to obtain a wide consumption fashion product, such as eyeglass frames.

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“…Based on previous studies, CNCs have been isolated from various lignocellulose materials, such as pinewood, corncob [6] , sugar palm fibers [7] , discarded cigarette filters [8] , sago seed shells [9,10] , and passion fruit peels [11] . Many lignocellulose materials can be used for CNCs production due to their high cellulose content.…”

Section: Introductionmentioning

confidence: 99%

Kinetics Study of Cellulose Nanocrystals Modification Using Rarasaponins by Elovich Equation

Wijaya¹,

Ismadji

Gunawan³

2020

JTS

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The modification of cellulose nanocrystals (CNCs) using rarasaponins (RSs) was carried out to enhancing the hydrophobicity of the CNCs. The RSs are a natural surfactant that has hydrophilic and hydrophobic sides. The linked RSs on the CNCs surface can be used to bond the hydrophobic drugs so that the modified CNCs can be applied as the hydrophobic drugs carrier in the medical field. The kinetics study was successfully carried out using the Elovich equation as the modeling equation. The Elovich equation fits the modification results well based on two parameters, i.e., the RSs/CNCs ratios and the times. The dispersion characteristics analysis was carried out to figure the enhancement of the hydrophobicity on the modified CNCs compared to the unmodified CNCs. According to the kinetics study and the dispersion characteristics analysis, the modification of CNCs using RSs could enhance CNCs utilization in the hydrophobic drug delivery system.

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Nanocrystalline cellulose isolated from discarded cigarette filters

Cited by 55 publications

References 39 publications

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

Formation of dialysis-free Kombucha-based bacterial nanocellulose embedded in a polypyrrole/PVA composite for bulk conductivity measurements

A Clean Process for Obtaining High-Quality Cellulose Acetate from Cigarette Butts

Kinetics Study of Cellulose Nanocrystals Modification Using Rarasaponins by Elovich Equation

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