Efficient extraction of carboxylated spherical cellulose nanocrystals with narrow distribution through hydrolysis of lyocell fibers by using ammonium persulfate as an oxidant

Cheng, Miao; Qin, Zongyi; Liu, Yannan; Qin, Yunfeng; Li, Tao; Chen, Long; Zhu, Meifang

doi:10.1039/c3ta13653a

Cited by 185 publications

(129 citation statements)

References 33 publications

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“…It was found that all the yielded cellulose nanoparticles possessed lower Tmax values because of their smaller particle size, high specific surface area, and active sulfate groups (Cheng et al 2014;Tan et al 2015). A similar phenomenon was previously reported for the production of cellulose nanofibrils from sugarcane bagasse via high-pressure homogenization because the produced nanomaterial consisted of a higher number of contact points to the heating source than crude cellulose (Saelee et al 2016).…”

Section: Morphological Study (Afm Analysis)supporting

confidence: 54%

“…Fortunately, all the cellulose nanoparticles were stable when the heating temperature was less than 280 °C. This is an important factor for the use of nanocellulose in various industrial applications, especially the thermoplastics field, as the processing temperature is normally higher than 200 °C (Cheng et al 2014). Therefore, the thermal resistance of all the nanocellulose remained sufficient to ensure that nanocellulose can be processed at approximately 200 °C without any risk of degradation. )…”

Section: Morphological Study (Afm Analysis)mentioning

confidence: 99%

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Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Chen¹,

Lee²,

Hamid³

2016

BioResources

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Nanostructured cellulose was successfully prepared from native cellulose using a homogeneous catalytic H2SO4 hydrolysis pathway in the presence of Cr(III)-and Mn(II)-transition metal salts as the co-catalyst. The effect of transition metal salts with different valence states (Cr 3+ and Mn 2+) on the physicochemical properties (chemical characteristics, crystallinity index, nano-structure, thermal stability, and morphology) of prepared nanocellulose was investigated. Interestingly, TEM micrographs showed that the Cr(III)-treated and Mn(II)-treated nanocellulose exhibited a weblike nanostructured-surface with average diameters of 44.7 ± 13.2 nm and 58.4 ± 15.3 nm, respectively. XRD study revealed that the crystallinity of nanocellulose was increased because the catalytic degradation of the less crystalline regions of cellulose occurred at a faster rate than its crystalline phases. Cr(III)-treated nanocellulose was capable of rendering a higher crystallinity index (75.6 ± 0.1%) compared with Mn(II)-treated nanocellulose (72.3 ± 0.4%). Furthermore, a dynamic light scattering (DLS) study revealed that Cr(III)-treated nanocellulose showed a smaller distribution range (92% at 14 to 135 nm) compared with Mn(II)-treated nanocellulose (92% at 607 nm). A higher valence state for the Cr(III)-cation, with a trivalent state (+3), rendered a more effective hydrolysis reaction compared with the Mn(II)-cation, with a divalent state (+2), for preparing the nanocellulose.

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Section: Morphological Study (Afm Analysis)supporting

confidence: 54%

Section: Morphological Study (Afm Analysis)mentioning

confidence: 99%

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Chen¹,

Lee²,

Hamid³

2016

BioResources

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“…Cheng and coworkers prepared the CNCs with 1 mol/L APS aqueous solution to oxidize lyocell fiber at 80 ∘ C for 16 h. The prepared CNCs were spherical with the diameter of 35 nm and a great deal of carboxyl groups were introduced on the surface of CNCs. The crystal type of resultant CNCs was cellulose II [110].…”

Section: Oxidation Degradationmentioning

confidence: 99%

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Xie

Yang

2018

International Journal of Polymer Science

219

128

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The recent strategies in preparation of cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) were described. CNCs and CNFs are two types of nanocelluloses (NCs), and they possess various superior properties, such as large specific surface area, high tensile strength and stiffness, low density, and low thermal expansion coefficient. Due to various applications in biomedical engineering, food, sensor, packaging, and so on, there are many studies conducted on CNCs and CNFs. In this review, various methods of preparation of CNCs and CNFs are summarized, including mechanical, chemical, and biological methods. The methods of pretreatment of cellulose are described in view of the benefits to fibrillation.

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“…The traditional methods like acid hydrolysis [4,7], enzyme-assisted hydrolysis [8] and mechanical treatments [9] can extract the CNs with hydroxyl groups, which are usually modified into other functional groups for further applications. Recently, CNs with functional groups (carboxyl or aldehyde groups) have been developed by 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) [10,11], ammonium persulfate (APS) [12], two-step approach combined acid hydrolysis and NaIO 4 oxidations [13][14][15], and one-step NaIO 4 oxidation [16]. The TEMPO and APS oxidations consume for a long time and the oxidizing agents are toxic [10,12] Abstract.…”

mentioning

confidence: 99%

“…Recently, CNs with functional groups (carboxyl or aldehyde groups) have been developed by 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) [10,11], ammonium persulfate (APS) [12], two-step approach combined acid hydrolysis and NaIO 4 oxidations [13][14][15], and one-step NaIO 4 oxidation [16]. The TEMPO and APS oxidations consume for a long time and the oxidizing agents are toxic [10,12] Abstract. A novel double response surface model is used first time to optimize a regioselective process to prepare spherical dialdehyde cellulose nanocrystals (SDACN) and rod-like dialdehyde cellulose nanocrystals (RDACN) via one-step sodium periodate (NaIO 4 ) oxidation.…”

mentioning

confidence: 99%

Spherical and rod-like dialdehyde cellulose nanocrystals by sodium periodate oxidation: Optimization with double response surface model and templates for silver nanoparticles

Lu¹,

Zhou³

et al. 2016

Express Polym. Lett.

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Recently, cellulose nanocrystals (CNs) with various morphologies (rod-like or spherical) isolated from the most abundant cellulosic materials have gained increasing attention in some fields such as antimicrobial packagings [1,2], template for metallic nanoparticles [3], aerogels for wastewater treatment [4], drug delivery [5], and protein immobilization [6] due to their excellent properties, including easily modified functional groups, high specific area, aspect ratios, and outstanding stiffness. As the nanofillers, the requirement of CNs surface group varies with the different applications. The traditional methods like acid hydrolysis [4,7], enzyme-assisted hydrolysis [8] and mechanical treatments [9] can extract the CNs with hydroxyl groups, which are usually modified into other functional groups for further applications. Recently, CNs with functional groups (carboxyl or aldehyde groups) have been developed by 2,2,6,6-tetramethylpiperidinyl-1-oxyl (TEMPO) [10,11], ammonium persulfate (APS) [12], two-step approach combined acid hydrolysis and NaIO 4 oxidations [13][14][15], and one-step NaIO 4 oxidation [16]. The TEMPO and APS oxidations consume for a long time and the oxidizing agents are toxic [10,12] Abstract. A novel double response surface model is used first time to optimize a regioselective process to prepare spherical dialdehyde cellulose nanocrystals (SDACN) and rod-like dialdehyde cellulose nanocrystals (RDACN) via one-step sodium periodate (NaIO 4 ) oxidation. The influence of four preparation factors (solid-liquid ratio, NaIO 4 concentration, reaction time and temperature) on the yields and aldehyde contents of the final products were evaluated. For comparison, rod-like cellulose nanocrystals (CN-M and CN-S) were prepared by hydrochloric/formic acid hydrolysis and sulfuric acid hydrolysis, respectively. The RDACN shows high crystallinity of 82%, while SDACN presents low crystallinity due to the high degree of oxidation. Thus, SDACN has poorer thermal stability than RDACN and CN-M, but higher than CN-S. Compared to CN-M, SDACN with higher aldehyde contents as templates is beneficial to deposit more Ag nanoparticles with diameters of 30±4 nm and the resultant nanohybrids exhibit good antibacterial activities against both Gram-negative E. coli and Gram-positive S. aureus.

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Efficient extraction of carboxylated spherical cellulose nanocrystals with narrow distribution through hydrolysis of lyocell fibers by using ammonium persulfate as an oxidant

Cited by 185 publications

References 33 publications

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Preparation of Nanostructured Cellulose via Cr(III)- and Mn(II)-Transition Metal Salt Catalyzed Acid Hydrolysis Approach

Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Spherical and rod-like dialdehyde cellulose nanocrystals by sodium periodate oxidation: Optimization with double response surface model and templates for silver nanoparticles

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