Cellulose-based hydrogel beads: Preparation and characterization

Nie, Guangjun; Zang, Yipeng; Yue, Wenjin; Wang, Mengmeng; Baride, Aravind; Sigdel, Aliza; Janaswamy, Srinivas

doi:10.1016/j.carpta.2021.100074

Cited by 21 publications

(14 citation statements)

References 54 publications

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“…There was no evidence of agglomeration of the polymers (within the detection limits of the equipment), indicating good miscibility of CMC in the CNC matrix. Neither matrices (without the spores) showed a porous structure, which could be a result of the ionic interactions (crosslinking) between the Ca 2+ ions and the CNC, resulting in a denser structure (Huq et al, 2017;Nie et al, 2021).…”

Section: Preparation and Morphological Characterization Of The Beadsmentioning

confidence: 99%

“…The spectra for the beads obtained after the crosslinking process showed an increase of the band at 3335 cm − 1 (ascribed to stretching of the -OH groups present in both CNC and CMC), compared to the spectra for the films. This could be explained by the Ca 2+ crosslinking process, with formation of stronger hydrogen bonds between the CNC and CNC: CMC chains (Mandal & Chakrabarty, 2019;Nie et al, 2021). The intensity of the -OH band was lower for CMC, because some of the -OH groups had been substituted by -CH 2 COONa during the production process (Alizadeh Asl et al, 2017).…”

Section: Thermal and Chemical Characterizationsmentioning

confidence: 99%

“…Carboxymethyl cellulose (CMC) has emerged as an ideal matrix for these nanocomposites, given its natural compatibility with nanocellulose structures (Oun & Rhim, 2017). Both cellulose nanocrystals (CNC) and CMC can be easily used to prepare capsules by different techniques (Calegari et al, 2022;Fitri et al, 2022;Levin et al, 2018;Nie et al, 2021). Therefore, the present work proposes the use of nanocellulose:CMC nanocomposite (CNC:CMC) as a system suitable for protecting T. harzianum, employed as a model microorganism.…”

Section: Introductionmentioning

confidence: 99%

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Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

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Section: Preparation and Morphological Characterization Of The Beadsmentioning

confidence: 99%

Section: Thermal and Chemical Characterizationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

Brondi

Florencio

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et al. 2022

Carbohydrate Polymers

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“…Hydrogel beads can be fabricated using metallic cross-linking (e.g., with CaCl 2 ) during synthesis. [62][63][64] Furthermore, hydrophobic hydrogels can also be prepared by introducing a stabilizing layer of hydrophobic substances on the surface of regular hydrogel, making them floatable on aqueous media. [65] Hydrogels can be categorized in many ways based on the physical, biological, or chemical response, mode of preparation, physical state, origin, nature of swelling, ionic charge, size, nature of cross-linking, and rate of biodegradation.…”

Section: Hydrogels: Structure and Classificationmentioning

confidence: 99%

“…Hydrogel beads can be fabricated using metallic cross‐linking (e.g., with CaCl 2 ) during synthesis. [ 62–64 ] Furthermore, hydrophobic hydrogels can also be prepared by introducing a stabilizing layer of hydrophobic substances on the surface of regular hydrogel, making them floatable on aqueous media. [ 65 ]…”

Section: Hydrogels: Structure and Classificationmentioning

confidence: 99%

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Kumar

Gusain

Pandey

et al. 2022

Adv Materials Inter

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Anthropogenic actions, environmental catastrophes, urbanization, population growth, and industrialization generate toxic pollutants in water bodies. The most pollutants are heavy metals and metalloids, dyes, volatile organic compounds, pharmaceuticals, pesticides, radionuclides, aromatic hydrocarbons, oils, polycyclic aromatic hydrocarbons, microbes/pathogens, and microplastics that can be in different forms and concentrations. [3][4][5] Globally, approximately 2 million tons of pollutants from agriculture, industrial, and sewage waste are released into water streams, which pose severe health risks and cause the deaths of more than 1400 people every day. [6] Thus, developing efficient, economical, environmentalfriendly, and scalable technologies for the purification of wastewater and seawater is urgently required. To fulfill the shortage of clean water, affordable technologies can be used to transform unconventional water reserves (such as wastewater, rainfall, seawater, and brackish water) into potable water. Recently, numerous water treatment technologies, including coagulation/flocculation, filtration, chemical precipitation, aerobic/anaerobic processing, biological treatment, electrochemically precipitation, advanced oxidation processing, membrane separation, ion-exchange, adsorption, solar/thermal distillation/evaporation, crystallization, and photocatalysis, have emerged to offer practical solutions to water pollution management. [7][8][9][10][11][12][13][14] Among them, adsorption and photocatalysis technologies have garnered significant attention from the research community due to their cost-effectiveness, high performance, Hydrogels have been employed for water purification applications, but their performance and strength are unsatisfactory for widespread adoption. Recently, hydrogel nanocomposites have been proposed to resolve the inherent challenges faced by hydrogels for water treatment. This review comprehensively analyzes hydrogel nanocomposites for water treatment using adsorbent and photocatalysis techniques. The structure, classification, and tunable synthesis methods of hydrogels are explained. Further, how hydrogels can be incorporated with functional nanoparticles (NPs) and can be used as templates/precursors for developing advanced 3D architectures, including the formation of hydrogel nanocomposite beads and 3D printing objects are discussed. Finally, the structure-property relationships of hydrogel nanocomposites are critically reviewed by considering introductory gelation chemistry, such as swelling characteristics, mechanical properties, stimuli-responsiveness, and ionic/electronic conduction. The extensive cross-linking of polymer chains with NPs offers high mass/charge transport, high surface areas, and enhanced polymer-water interactions to achieve high-performing adsorbents and photocatalysts. Several motivating examples of emerging NP-containing hydrogel nanocomposites for use in adsorbents and photocatalysis have been discussed. Such efforts validated the excellent technological pote...

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Biodegradable, Strong, and Hydrophobic Regenerated Cellulose Films Enriched with Esterified Lignin Nanoparticles

Tian,

Wang,

Jiang

et al. 2024

Small

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The scientific community is pursuing significant efforts worldwide to develop environmentally viable film materials from biomass, particularly transparent, high‐performance regenerated cellulose (RC) films, to replace traditional plastics. However, the inferior mechanical performance and hydrophilic nature of RC films are generally not suitable for use as a substitute for plastics in practical applications. Herein, lignin homogenization is used to synthesize high‐performance composite films. The esterified lignin nanoparticles (ELNPs) with dispersible and binding advantages are prepared through esterification and nanometrization. In the presence of ELNPs, RC films exhibit a higher tensile strength (110.4 MPa), hydrophobic nature (103.6° water contact angle, 36.6% water absorption at 120 min, and 1.127 × 10−12 g cm cm−2 s−1 Pa−1 water vapor permeability), and exciting optical properties (high visible and low ultraviolet transmittance). The films further display antioxidant activity, oxygen barrier ability, and thermostability. The films completely biodegrade at 12 and 30% soil moisture. Overall, this study offers new insights into lignin valorization and regenerated cellulose composite films as novel bioplastic materials.

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Cellulose-based hydrogel beads: Preparation and characterization

Cited by 21 publications

References 54 publications

Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

Encapsulation of Trichoderma harzianum with nanocellulose/carboxymethyl cellulose nanocomposite

Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification

Biodegradable, Strong, and Hydrophobic Regenerated Cellulose Films Enriched with Esterified Lignin Nanoparticles

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