Effect of cellulose materials on the mechanochemical-assisted reaction system with oleic acid

Lease, Jacqueline; Kawano, Tessei; Andou, Yoshito

doi:10.1039/d3ra04715f

Cited by 5 publications

(6 citation statements)

References 46 publications

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“…In the present study as Table 5 , the peaks attributed to β (1–4) D-glucose structure (monomer of cellulose) after SOE1 are δ 4.75 (β H1), 3.60–4.42 (H2,3,4), 4.67 (H5), and 3.02 (H6) while 4.99 (β H1), 3.50–4.42 (H2,3,4), 4.71 (H5), and 3.00–3.33 (H6) for the ES after SOE2. These assigned peaks are in close approximation to reported shift value in dissolved cellulose from cotton, bleached kraft pulp [ 75 ] and rice straw cellulose [ 76 ]. The sample from SOE1 shown signal at δ 5.40 but not present in sample prior the SOE 1.…”

Section: Resultssupporting

confidence: 77%

“…The TEM image of this sample shows that some parts of the fiber have a more transparent effect compared to others, with higher dissociated fibrils could be observed. The more transparent fiber image indicates the presence of thinner lignin and hemicellulose on the solid [ 75 ] supporting that the solubilization of non-cellulosic components occurred during ACO. The image also portrays more untangled fibrils with a smaller diameter, which is around 70–95 nm with a small reduction in length (3,800–4,000 nm) compared to C1AL.…”

Section: Resultsmentioning

confidence: 98%

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Synergistic sequential oxidative extraction for nanofibrillated cellulose isolated from oil palm empty fruit bunch

Abd Manaf,

Harun,

Md. Jahim

et al. 2024

PLoS ONE

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This research presents a comprehensive study of sequential oxidative extraction (SOE) consisting of alkaline and acidic oxidation processes to extract nanocellulose from plant biomass. This proposed process is advantageous as its operation requires a minimum process with mild solvents, and yet successfully isolated high-quality nanofibrillated cellulose (NFC) from raw OPEFB. The SOE involved ammonium hydroxide (NH4OH, 2.6 M) and formic acid (HCOOH, 5.3 M) catalyzed by hydrogen peroxide (H2O2, 3.2 M). This approach was used to efficiently solubilize the lignin and hemicellulose from Oil Palm Empty Fruit Bunch (OPEFB) at the temperature of 100°C and 1 h extraction time, which managed to retain fibrous NFC. The extracted solid and liquor at each stage were studied extensively through physiochemical analysis. The finding indicated that approximately 75.3%dwb of hemicellulose, 68.9%dwb of lignin, and 42.0%dwb of extractive were solubilized in the first SOE cycle, while the second SOE cycle resulted in 92.3%dwb, 99.6%dwb and 99.8%dwb of solubilized hemicellulose, lignin, and extractive/ash, respectively. High-quality NFC (75.52%dwb) was obtained for the final extracted solid with 76.4% crystallinity, which is near the crystallinity of standard commercial NFC. The proposed process possesses an effective synergy in producing NFC from raw OPEFB with less cellulose degradation, and most of the degraded hemicellulose and lignin are solubilized in the liquor.

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Section: Resultssupporting

confidence: 77%

Section: Resultsmentioning

confidence: 98%

Synergistic sequential oxidative extraction for nanofibrillated cellulose isolated from oil palm empty fruit bunch

Abd Manaf,

Harun,

Md. Jahim

et al. 2024

PLoS ONE

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“…The X-ray diffraction (XRD) spectra revealed primary diffraction peaks of MCC and CNF at 2θ values of approximately 15.0, 17.1, and 23.0, and 34.9, which correspond to the (101), (101̅), (002) and (040) planes, respectively, as depicted in Figure . , These peaks had a trait similar to that of cellulose I. Besides, the XRD spectra of MCC-Nap and CNF-Nap bore a resemblance to that of native MCC and CNF.…”

Section: Resultsmentioning

confidence: 87%

Synthesis of Nanocellulose Derivatives through Esterification with Naphthoic Acid as a Fluorescent Additive

Lease,

Sahin,

A Farid

et al. 2024

ACS Sustainable Chem. Eng.

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The demand for sustainable and renewable resources has significantly increased in recent decades. Cellulose, as a potential and abundant resource in industry, offers promising prospects. As a biological polymer primarily originating from lignocellulosic biomass, cellulose is biodegradable and recyclable, making it an attractive candidate for mitigating environmental issues. In this research, microcrystalline cellulose (MCC) and cellulose nanofibers (CNFs) are modified using 1-naphthoic acid (1-NA) through an esterification reaction in a tosyl chloride/ pyridine solvent system to produce fluorophore-labeled cellulose. Various characterization methods such as Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and X-ray diffraction (XRD) are used to investigate the success of the modification reaction. Cellulose modification results in a decrease in the thermal stability of cellulose by lowering the degradation temperature. The glass-transition temperature (T g ) is observed after inducing the naphthoate side chain, which is around 160 °C. The cellulose naphthoate exhibits strong ultraviolet (UV) absorption peaks at around 282 nm and presents good fluorescence properties. Herein, it can be used in fluorescence coatings, sensors, and also packaging.

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“…Furthermore, multistep degradation observed in ionic hydrogels in which the initial mass loss was observed at 100–110 °C, attributed to the evaporation of water . Subsequently, a second mass loss occurred at 200–250 °C, attributed to the degradation of IL and OA . For a more visual and accurate understanding of the gel-to-sol transition, the real-time video is given (Video S1).…”

Section: Resultsmentioning

confidence: 99%

“…48 Subsequently, a second mass loss occurred at 200−250 °C, attributed to the degradation of IL and OA. 49 For a more visual and accurate understanding of the gel-to-sol transition, the real-time video is given (Video S1).…”

Section: Viscosity Rheographs Of [Cho][ala]-and [Cho]mentioning

confidence: 99%

Multifunctional Ionic Hydrogel-Based Transdermal Delivery of 5-Fluorouracil for the Breast Cancer Treatment

Pansuriya,

Patel,

Kumar

et al. 2024

ACS Appl. Bio Mater.

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Transdermal drug delivery systems (TDDS) are a promising and innovative approach for breast cancer treatment, offering advantages such as noninvasiveness, potential for localized and prolonged drug delivery while minimizing systemic side effects through avoiding first-pass metabolism. Utilizing the distinctive characteristics of hydrogels, such as their biocompatibility, versatility, and higher drug loading capabilities, in the present work, we prepared ionic hydrogels through synergistic interaction between ionic liquids (ILs), choline alanine ([Cho][Ala]), and choline proline ([Cho][Pro]) with oleic acid (OA). ILs used in the study are biocompatible and enhance the solubility of 5fluorouracil (5-FU), whereas OA is a known chemical penetration enhancer. The concentration-dependent (OA) change in morphological aggregates, that is, from cylindrical micelles to worm-like micelles to hydrogels was formed with both ILs and was characterized by SANS measurement, whereas the interactions involved were confirmed by FTIR spectroscopy. The hydrogels have excellent mechanical properties, which studied by rheology and their morphology through FE-SEM analysis. The in vitro skin permeation study revealed that both hydrogels penetrated 255 times ([Cho][Ala]) and 250 times ([Cho][Pro]) more as compared to PBS after 48 h. Those ionic hydrogels exhibited the capability to change the lipid and keratin arrangements within the skin layer, thereby enhancing the transdermal permeation of the 5-FU. Both ionic hydrogels exhibit excellent biocompatibility with normal cell lines (L-132 cells) as well as cancerous cell lines (MCF-7 cells), demonstrating over 92% cell viability after 48 h in both cell lines. In vitro, the cytotoxicity of the 5-FU-loaded hydrogels was evaluated on MCF-7 and HeLa cell lines. These results indicate that the investigated biocompatible and nontoxic ionic hydrogels enable the transdermal delivery of hydrophilic drugs, making them a viable option for effectively treating breast cancer.

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Effect of cellulose materials on the mechanochemical-assisted reaction system with oleic acid

Abstract: Investigation of the effect of the types of cellulose on the degree of substitution via mechanochemical reaction.

Cited by 5 publications

References 46 publications

Synergistic sequential oxidative extraction for nanofibrillated cellulose isolated from oil palm empty fruit bunch

Synergistic sequential oxidative extraction for nanofibrillated cellulose isolated from oil palm empty fruit bunch

Synthesis of Nanocellulose Derivatives through Esterification with Naphthoic Acid as a Fluorescent Additive

Multifunctional Ionic Hydrogel-Based Transdermal Delivery of 5-Fluorouracil for the Breast Cancer Treatment

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