Morphology of the nanocellulose produced by periodate oxidation and reductive treatment of cellulose fibers

Errokh, Amira; Magnin, Albert; Putaux, Jean‐Luc; Boufi, Sami

doi:10.1007/s10570-018-1871-7

Cited by 71 publications

(35 citation statements)

References 26 publications

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“…At higher oxidant concentrations, the two peaks of cellulose at 2θ values of 16° and 22° that correspond to 001 and 200 crystal planes in cellulose structure were merged into one peak at 18°. This is an indication that periodate oxidation results into a more amorphous cellulose whose peak value is usually observed around this point as reported by [21,26]. The amorphous peak at 2θ = 18° has also been used by numerous authors as a basis for the calculation of the empirical crystallinity index of cellulose using Segal's method [15,26,27,33,34].…”

Section: X-ray Diffractogramsmentioning

confidence: 75%

“…While most authors have used the same source of cellulose i.e. wood pulp for the synthesis of dialdehyde cellulose few have explored the synthesis of DAC from other sources [4,21,29]. In our study, 2,3-dialdehyde cellulose was synthesized from microcrystalline cellulose (MCC) that was extracted from O. sativa husks though the present work didn't make comparison with DAC from cotton linters or wood derived cellulose.…”

Section: Determination Of Aldehyde Contentmentioning

confidence: 97%

“…At the end of the reaction, ethanol was added into the reaction vessel to quench the residual periodate and the residue washed with water to neutral pH. The residue was solvent exchanged with ethanol and frozen with liquid nitrogen before lyophilization [16,21,22].…”

Section: Periodate Oxidation Of Cellulose Pulpmentioning

confidence: 99%

“…A blank measurement was performed similarly with non-oxidized as-prepared cellulose and the aldehyde content determined from Eq. (1):where V S and V B = volume of sample and the blank while C NaOH and m c are the concentration of NaOH solution and the weight of the dry cellulose sample respectively [18,21].…”

Section: Determination Of Aldehyde Contentmentioning

confidence: 99%

“…Beyond 50 °C, the periodate ion decomposed to liberate iodine which in turn has been reported to participate in side reaction with cellulose [6]. However, at room temperature the conversion of cellulose to dialdehyde cellulose proceeds via longer reaction time (< 19 h) which leads to production of IO 3 − ions that are precipitated as XIO 3 when an organic solvent such as ethanol or acetone is used to wash the oxidized cellulose ( Figure S4) [4,21]. Such side products act as impurities that need to be eliminated during synthesis of DAC hence care should be taken to eliminate them [4].…”

Section: Effect Of Oxidant Concentration Temperature and Time On Oximentioning

confidence: 99%

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Synthesis and characterization of dialdehyde cellulose nanofibers from O. sativa husks

et al. 2019

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Periodate oxidation of cellulose breaks the C 2-C 3 bond of the glucose repeating units forming two vicinal aldehyde groups that are amenable to further reactions. In this article, effects of reaction conditions during the oxidation such as reaction time, oxidant concentration, and temperature on the aldehyde content were investigated and an optimized reaction condition identified. The synthesis of 2,3-dialdehyde cellulose (DAC) was confirmed by scanning electron microscopy, transmission electron microscopy (TEM), Fourier-transform infra-red spectroscopy (FT-IR), differential scanning calorimetry, thermal gravimetric analysis and wide-angle X-ray diffractometer (WXRD). Formation of dialdehyde cellulose (DAC) was confirmed by the appearance of carbonyl peak in FT-IR spectra while a decrease in crystallinity of the fibers as a result of oxidation was confirmed by WXRD. Morphological changes during oxidation were observed using SEM while the size of the fibers was confirmed by TEM, which showed the average length of the fibers decreased after oxidation as compared to native cellulose. Thermal degradation studies revealed that oxidation of cellulose decreased the thermal stability of the polymer as compared to native cellulose and was dependent on the aldehyde content. In conclusion, oxidation of native cellulose to dialdehyde cellulose had a profound effect on the thermal stability, degree of crystallinity, size and morphology of the polymer.

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Section: X-ray Diffractogramsmentioning

confidence: 75%

Section: Determination Of Aldehyde Contentmentioning

confidence: 97%

Section: Periodate Oxidation Of Cellulose Pulpmentioning

confidence: 99%

Section: Determination Of Aldehyde Contentmentioning

confidence: 99%

Section: Effect Of Oxidant Concentration Temperature and Time On Oximentioning

confidence: 99%

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Synthesis and characterization of dialdehyde cellulose nanofibers from O. sativa husks

et al. 2019

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Fully Exploiting Clusterization‐Triggered Room Temperature Phosphorescence of Cellulose by Stepwise Rigidification for Long‐Lived and Excitation Wavelength‐Dependent Afterglows

Gao,

Shi,

Rao

et al. 2024

Adv Funct Materials

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Achieving long‐lived room temperature phosphorescence (RTP) in nonconventional luminophores devoid of any conjugated units is fascinating but remains formidably challenging due to their low intersystem crossing efficiency and strong nonradiative decay. Herein, a stepwise rigidification strategy is developed to suppress the nonradiative decay and fully exploit the clusterization‐triggered RTP performance of cellulose. Specifically, the crystallinity is enhanced, and hydrogen bonding is reconstructed by a directed oxidation‐reduction reaction to afford a more rigid environment of cellulose; then, the reconstructed cellulose is further cross‐linked by boric acid to activate double confinement architecture. In return, the phosphorescence lifetime of the target cellulose increases almost one order of magnitude, and the phosphorescence quantum yield increases more than 27 folds. Moreover, the afterglow of the RTP cellulose can be regulated from blue to green by changing excitation wavelength, which is useful for advanced information encryption and anti‐counterfeiting. The stepwise rigidification strategy is also applicable for preparing other nature polysaccharides‐based long‐lived RTP materials, such as chitosan and sodium alginate. Nature polysaccharides are completely biodegradable; thus, this work paves the way for the development of eco‐friendly and practical color‐variable RTP materials.

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Dialcohol Cellulose Nanocrystals Enhanced Polymerizable Deep Eutectic Solvent‐Based Self‐Healing Ion Conductors with Ultra‐Stretchability and Sensitivity

Sun

Zhu

et al. 2023

Advanced Sensor Research

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Recently, ion conductors have been extensively explored in various fields due to their flexibility, sensitivity, and conductivity. However, ultrastretchable and self-healing ion conductors with wide sensing ranges and high sensitivity are rarely reported. In this study, dialcohol cellulose nanocrystals (DCNCs) are successfully fabricated by sequential periodate oxidization and reduction and introduced them into polymerizable deep eutectic solvents (PDES) to prepare nanocomposite ion conductors. Due to the high dispersity of DCNCs in PDES, the obtained ion conductors exhibit improved tensile strain (3869 ± 607.21%) and tensile stress (0.220 ± 0.022 MPa) simultaneously, and display self-healing ability in terms of both electrical and mechanical properties. In addition, the ion conductors are able to detect human motions by transmitting deformation into resistance signals even after self-healing, which prolongs the service life. Generally, this study paves the way for the design of self-healing and stretchable ion conductors for wearable electronics.

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Morphology of the nanocellulose produced by periodate oxidation and reductive treatment of cellulose fibers

Cited by 71 publications

References 26 publications

Synthesis and characterization of dialdehyde cellulose nanofibers from O. sativa husks

Synthesis and characterization of dialdehyde cellulose nanofibers from O. sativa husks

Fully Exploiting Clusterization‐Triggered Room Temperature Phosphorescence of Cellulose by Stepwise Rigidification for Long‐Lived and Excitation Wavelength‐Dependent Afterglows

Dialcohol Cellulose Nanocrystals Enhanced Polymerizable Deep Eutectic Solvent‐Based Self‐Healing Ion Conductors with Ultra‐Stretchability and Sensitivity

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