Eco‐Friendly and Facile Preparation of Spherical Chitin Nanoparticles

Luong, John H. T.; Gedanken, Aharon

doi:10.1002/slct.201801536

Cited by 4 publications

(3 citation statements)

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“…The triple salt potassium peroxymonosulfate (2KHSO 5 •KHSO 4 •K 2 SO 4 ) known as Oxone ® is an effective oxidant agent. Oxone ® salt was used to obtain spherical crystalline chitin nanoparticles [21] and silk microfibers [9][10][11], and represents an easy and eco-friendly procedure because of its stability and water solubility, its low cost, its less toxic 'green' nature, its non-polluting by-products, and its cost-effectiveness [2,10,12,[21][22][23].…”

Section: Characterization Of the New Fs-ox And Ct-ox Materials Used I...mentioning

confidence: 99%

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Chitin and Silk Fibroin Biopolymers Modified by Oxone: Efficient Heterogeneous Catalysts for Knoevenagel Reaction

et al. 2022

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New materials from silk fibroin (FS-Ox) and chitin (CT-Ox) functionalized with Oxone® salt were developed for application in the synthesis of Knoevenagel adducts. The experiments were performed using benzaldehyde derivatives, malononitrile, and a mixture of water and ethanol as green solvents. The efficiency of conventional and microwave irradiation as heating sources for this reaction was also investigated. When the reactions were performed for 60 min under optimized conditions with conventional heating, twelve Knoevenagel adducts 2a–l were obtained, with good yields for both catalysts (CT-Ox 60–98% and FS-Ox 71–98%). When microwave irradiation was used, the reaction periods were reduced twelvefold, with the same Knoevenagel adducts with good CT-Ox (39–99%) and FS-Ox (35–99%) yields obtained in most cases. The reuse of these materials as catalysts in successive reactions was also evaluated, and CT-Ox FS-Ox were successfully used for 4 and 2 cycles, respectively. The results presented prove the efficiency of the CT-OxFS-Ox catalyst as a promising low-cost and reusable material with suitable catalytic properties to be applied in the aldol condensation reaction in a sustainable way.

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Section: Characterization Of the New Fs-ox And Ct-ox Materials Used I...mentioning

confidence: 99%

“…Like acids, KHSO 5 was capable of hydrolyzing the β-(1-4) bonds, with the presence of water then rendering each broken bond inactive. Oxone ® was effective in the cleavage of the glycosidic bonds and etching out the individualization of the elementary fibrils for CT-Ox [21].…”

Section: Characterization Of the New Fs-ox And Ct-ox Materials Used I...mentioning

confidence: 99%

Chitin and Silk Fibroin Biopolymers Modified by Oxone: Efficient Heterogeneous Catalysts for Knoevenagel Reaction

et al. 2022

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“…However, the surface charge can be modulated by the degree of acetylation and through surface modifications, [ 62 ] including TEMPO-mediated oxidation [ 64 ]. Preparation of spherical chitin nanoparticles has also been reported [ 65 , 66 ]. Chitosan is a polymer derived by the partial N -deacetylation of chitin, widely available in nature.…”

Section: Polysaccharide Nanomaterialsmentioning

confidence: 99%

Engineered Multilayer Microcapsules Based on Polysaccharides Nanomaterials

Lombardo

Villares

2020

Molecules

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The preparation of microcapsules composed by natural materials have received great attention, as they represent promising systems for the fabrication of micro-containers for controlled loading and release of active compounds, and for other applications. Using polysaccharides as the main materials is receiving increasing interest, as they constitute the main components of the plant cell wall, which represent an ideal platform to mimic for creating biocompatible systems with specific responsive properties. Several researchers have recently described methods for the preparation of microcapsules with various sizes and properties using cell wall polysaccharide nanomaterials. Researchers have focused mostly in using cellulose nanomaterials as structural components in a bio-mimetic approach, as cellulose constitutes the main structural component of the plant cell wall. In this review, we describe the microcapsules systems presented in the literature, focusing on the works where polysaccharide nanomaterials were used as the main structural components. We present the methods and the principles behind the preparation of these systems, and the interactions involved in stabilizing the structures. We show the specific and stimuli-responsive properties of the reported microcapsules, and we describe how these characteristics can be exploited for specific applications.

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Polysaccharides

Afrin

Karim²

2021

Polysaccharide-Based Nanocomposites for Gene Delivery and Tissue Engineering

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Eco‐Friendly and Facile Preparation of Spherical Chitin Nanoparticles

Cited by 4 publications

References 30 publications

Chitin and Silk Fibroin Biopolymers Modified by Oxone: Efficient Heterogeneous Catalysts for Knoevenagel Reaction

Chitin and Silk Fibroin Biopolymers Modified by Oxone: Efficient Heterogeneous Catalysts for Knoevenagel Reaction

Engineered Multilayer Microcapsules Based on Polysaccharides Nanomaterials

Polysaccharides

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