Cellulose nanosphere: Preparation and applications of the novel nanocellulose

Tian, Wenwen; Gao, Xuexin; Zhang, Jinming; Yu, Jian; Zhang, Jun

doi:10.1016/j.carbpol.2021.118863

Cited by 50 publications

(29 citation statements)

References 123 publications

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“…The FESEM results show that the morphology of extracted CN was consistently distributed as a spherical shape with a diameter range of 28-82, 2-44, 8-42, 11-36, and 28-127 nm for RS-CN, CC-CN, PL-CN, PP-CN, and COM-CN, respectively. Most CNs prepared by the acid hydrolysis process were reported at sizes below 100 nm [4]. The results are consistent with Mehanny, et al [22]; nanocellulose obtained from palm wastes via 20% H2SO4 (v/v) at 120 °C for 30 min was reported in spherical particles of 42-82 nm diameter.…”

Section: Morphology and Yield Analysissupporting

confidence: 87%

“…Cellulose is considered a long-term sustainable alternative to synthetic polymers and has been used as a major raw material in several industries. It is the most prevalent renewable polymer, and due to its low costs, sustainability, biocompatibility, and biodegradability, it has become a crucial element of sustainable development [4]. Cellulose can be synthesized into a smaller structural material described as nanocelluloses using various techniques, such as enzymatic treatment and mechanochemical techniques [5].…”

Section: Introductionmentioning

confidence: 99%

“…Nanocellulose is considered a leading type of nanomaterial that can be applied as a strengthening material in the production of nanocomposites because of its distinctive qualities, including biodegradability, renewability, non-toxicity, high mechanical strength, and optical properties [6,7]. Cellulose nanosphere (CN) is a novel type of nanocellulose with a spherical shape and size in the nanometer range [4]. The shape of nanoparticles significantly affects their properties and applications [8].…”

Section: Introductionmentioning

confidence: 99%

“…The quality of nanocellulose materials is affected by the source of cellulose, pretreatment, isolation method, and isolation conditions [15]. Recently, ultrasonication has been applied in many studies during post-treatment to break down CN aggregates in suspension via cavitation of ultrasonic waves [4]. For the production of nanocellulose, a combination of homogenization and ultrasonication is used as a non-hazardous, time-saving, and organic solvent-free process [16].…”

Section: Introductionmentioning

confidence: 99%

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Isolation and Characterization Cellulose Nanosphere from Different Agricultural By-Products

et al. 2022

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Cellulose nanospheres (CN) have been considered a leading type of nanomaterial that can be applied as a strengthening material in the production of nanocomposites. This work aimed to isolate and characterize the properties of CN from different agricultural by-products. CNs were successfully isolated from rice straw, corncob, Phulae pineapple leaf and peel using acid hydrolysis (60% H2SO4) combined with homogenization-sonication (homogenized at 12,000 rpm for 6 min and ultrasonicated for 10 min). The results showed that the CN from rice straw (RS-CN) and corncob (CC-CN) exhibited high yields (22.27 and 22.36%) (p < 0.05). All hydrolyzed CNs exhibited a spherical shape with a diameter range of 2 to 127 nm. After acid hydrolysis, Fourier transform infrared (FTIR) results showed no impurities. X-ray diffraction (XRD) showed that the structure of cellulose was changed from cellulose-I to cellulose-II. However, cellulose-I remained in pineapple peel cellulose nanosphere (PP-CN). The crystalline index (CI) ranged from 43.98 to 73.58%, with the highest CI obtained in the CC-CN. The CN from all sources presented excellent thermal stability (above 300 °C). The functional properties, including water absorption Index (WAI), water solubility index (WSI) and swelling capacity were investigated. PP-CN showed the highest WAI and swelling capacity, while the PL-CN had the highest WSI (p < 0.05). Among all samples, CC-CN showed the highest extraction yield, small particle size, high CI, and desirable functional properties to be used as a material for bio-nanocomposites film.

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Section: Morphology and Yield Analysissupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Isolation and Characterization Cellulose Nanosphere from Different Agricultural By-Products

et al. 2022

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“…In general, ionic liquids (ILs) can dissolve cellulose by disturbing the native hydrogen bond network within cellulose structures [ 2 ]. In previous studies, imidazolium-based ILs, such as 1-butyl-3-methylimidazolium chloride (BMIMCl) [ 3 , 4 ], 1-allyl-3-methylimidazolium chloride (AMIMCl) [ 5 ], 1-butyl-3-methylimidazolium acetate [ 6 , 7 ], and 1-ethyl-3-methylimidazolium acetate [ 8 ], have been broadly utilized as favorable cellulose solvents. The cellulose solubility of IL is strongly dependent on the properties of anions and cations.…”

Section: Introductionmentioning

confidence: 99%

Strength Enhancement of Regenerated Cellulose Fibers by Adjustment of Hydrogen Bond Distribution in Ionic Liquid

Xue

Yang

et al. 2022

Polymers

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To improve the physical strength of regenerated cellulose fibers, cellulose dissolution was analyzed with a conductor-like screening model for real solvents in which 1-allyl-3-methylimidazolium chloride (AMIMCl) worked only as a hydrogen bond acceptor while dissolving the cellulose. This process could be promoted by the addition of urea, glycerol, and choline chloride. The dissolution and regeneration of cellulose was achieved through dry-jet and wet-spinning. The results demonstrated that the addition of hydrogen bond donors and acceptors either on their own or in combination can enhance the tensile strength, but their effects on the crystallinity of the regenerated fibers were quite limited. Compared with the regenerated fibers without any additives, the tensile strength was improved from 54.43 MPa to 139.62 MPa after introducing the choline chloride and glycerol, while related the crystallinity was only changed from 60.06% to 62.97%. By contrast, a more compact structure and fewer pores on the fiber surface were identified in samples with additives along with well-preserved cellulose frameworks. Besides, it should be noted that an optimization in the overall thermal stability was obtained in samples with additives. The significant effect of regenerated cellulose with the addition of glycerol was attributed to the reduction of cellulose damage by slowing down the dissolution and cross-linking in the cellulose viscose. The enhancement of the physical strength of regenerated cellulose fiber can be realized by the appropriate adjustment of the hydrogen bond distribution in the ionic liquid system with additives.

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Upcycling Food By‐products: Characteristics and Applications of Nanocellulose

Kim,

Doh

2024

Chemistry An Asian Journal

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Rising global food prices and the increasing prevalence of food insecurity highlight the imprudence of food waste and the inefficiencies of the current food system. Upcycling food by‐products holds significant potential for mitigating food loss and waste within the food supply chain. Food by‐products can be utilized to extract nanocellulose, a material that has obtained substantial attention recently due to its renewability, biocompatibility, bioavailability, and a multitude of remarkable properties. Cellulose nanomaterials have been the subject of extensive research and have shown promise across a wide array of applications, including the food industry. Notably, nanocellulose possesses unique attributes such as a surface area, aspect ratio, rheological behavior, water absorption capabilities, crystallinity, surface modification, as well as low possibilities of cytotoxicity and genotoxicity. These qualities make nanocellulose suitable for diverse applications spanning the realms of food production, biomedicine, packaging, and beyond. This review aims to provide an overview of the outcomes and potential applications of cellulose nanomaterials derived from food by‐products. Nanocellulose can be produced through both top‐down and bottom‐up approaches, yielding various types of nanocellulose. Each of these variants possesses distinctive characteristics that have the potential to significantly enhance multiple sectors within the commercial market.

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Cellulose nanosphere: Preparation and applications of the novel nanocellulose

Cited by 50 publications

References 123 publications

Isolation and Characterization Cellulose Nanosphere from Different Agricultural By-Products

Isolation and Characterization Cellulose Nanosphere from Different Agricultural By-Products

Strength Enhancement of Regenerated Cellulose Fibers by Adjustment of Hydrogen Bond Distribution in Ionic Liquid

Upcycling Food By‐products: Characteristics and Applications of Nanocellulose

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