Preparation of cellulose nanocrystals based on waste paper via different systems

Jiang, Qiwen; Xing, Xinyue; Jing, Yi; Han, Ying

doi:10.1016/j.ijbiomac.2020.02.110

Cited by 60 publications

(18 citation statements)

References 17 publications

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“…For example, recycled paper waste is often viewed as a source of secondary cellulosic fibers for valorization. Jiang et al evaluated the conversion of these materials into sCNCs and cCNCs (by APS oxidation) [ 40 ]. cCNCs were produced in lower yield (22.42%) compared to sCNCs (41.22%), with a crystallinity index (CrI) of 77.56% and 72.45%, respectively.…”

Section: Production Of Ccncsmentioning

confidence: 99%

Preparation and Surface Functionalization of Carboxylated Cellulose Nanocrystals

Lam

Hemraz

2021

Nanomaterials

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In recent years, cellulose nanocrystals (CNCs) have emerged as a leading biomass-based nanomaterial owing to their unique functional properties and sustainable resourcing. Sulfated cellulose nanocrystals (sCNCs), produced by sulfuric acid-assisted hydrolysis of cellulose, is currently the predominant form of this class of nanomaterial; its utilization leads the way in terms of CNC commercialization activities and industrial applications. The functional properties, including high crystallinity, colloidal stability, and uniform nanoscale dimensions, can also be attained through carboxylated cellulose nanocrystals (cCNCs). Herein, we review recent progress in methods and feedstock materials for producing cCNCs, describe their functional properties, and discuss the initial successes in their applications. Comparisons are made to sCNCs to highlight some of the inherent advantages that cCNCs may possess in similar applications.

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Section: Production Of Ccncsmentioning

confidence: 99%

Preparation and Surface Functionalization of Carboxylated Cellulose Nanocrystals

Lam

Hemraz

2021

Nanomaterials

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“…For example, Jiang et al successfully extracted CNCs from wastepaper fibers by acid hydrolysis. The obtained CNCs had a rod-like structure with the crystallinity of 77.56% [12]. Similar rod-like CNCs were extracted from the disposed paper cup through citric acid hydrolysis and were applied to reinforce composite films [13].…”

Section: Introductionmentioning

confidence: 96%

Cellulose Nanocrystals Derived from Textile Waste through Acid Hydrolysis and Oxidation as Reinforcing Agent of Soy Protein Film

et al. 2020

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More than 10 million tons of textile waste are disposed through landfill every year in North America. The disposal of textile waste via landfill or incineration causes environmental problems and represents a waste of useful resources. In this work, we explored the possibility to directly extract cellulose nanocrystals (CNCs) from untreated textile waste through two methods, namely sulfuric acid hydrolysis and three-step oxidization. CNCs with cellulose Iβ crystalline structure and rod-like shape were successfully obtained. The aspect ratios of CNCs prepared from acid hydrolysis and oxidization were 10.00 ± 3.39 and 17.10 ± 12.85, respectively. Their application as reinforcing agent of soybean protein isolate (SPI) film was evaluated. With the addition of 20% CNCs, the composite film maintained the high transparency, while their water vapor barrier property, tensile strength, and Young’s modulus were significantly improved. This research demonstrates a promising approach to recycle textile waste, and more value-added applications based on the derived CNCs could be expected.

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“…Exploitation of new bio-based materials for versatile application fields has received great attention from scientist and researcher to alleviate the climate change through reduced carbon footprint. Biomass wastes are easily available and have become the abundant source for cellulose [ 1 , 2 , 3 ]. The extensive use of this biomass for manufacturing valuable product, could promote a cleaner and sustainable environment [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

et al. 2021

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Conocarpus fiber is a lignocellulosic biomass rich in cellulose potentially used for producing nanocrystalline cellulose (NCC), a biomaterial extensively employed in various application fields. In the present work, different hydrolysis times of 10, 20 and 30 min were applied to chemically pre-treated Conocarpus fiber to produce CPNC1, CPNC2, and CPNC3 particles. With acid hydrolysis treatment, the yield of NCC product was successfully retained at 17–19%. Individual, rod-like shapes of NCC particles could be clearly observed under microscopy examination. From chemical composition analysis, a relatively pure cellulose compartment was produced for all NCC samples with substantial removal of lignin and hemicellulose. The physicochemical analysis proved that each nanoparticle sample possessed strong cellulose crystalline structure. For thermal analyses, the heat resistance of NCCs was gradually enhanced with the increased hydrolysis times. Therefore, the extracted NCC product from Conocarpus fiber could be a green nano-filler for developing nanocomposite material in the future.

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Preparation of cellulose nanocrystals based on waste paper via different systems

Cited by 60 publications

References 17 publications

Preparation and Surface Functionalization of Carboxylated Cellulose Nanocrystals

Preparation and Surface Functionalization of Carboxylated Cellulose Nanocrystals

Cellulose Nanocrystals Derived from Textile Waste through Acid Hydrolysis and Oxidation as Reinforcing Agent of Soy Protein Film

Isolation and Production of Nanocrystalline Cellulose from Conocarpus Fiber

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