Preparation and characterization of crosslinked alginate–CMC beads for controlled release of nitrate salt

Ibrahim, Sayeda M.; Fadl, Faten Ismail Abou El; El-Naggar, Amal A.

doi:10.1007/s10967-013-2820-4

Cited by 45 publications

(19 citation statements)

References 22 publications

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“…The interaction was occurs in carboxylic and DOI: 10.29303/aca.v1i2. 8 Nurul Ismillayli et al phenolic groups of HA and -COO groups of CMC via Al 3+ ion as cross-linker. The mass ratio of Al 3+ ion to CMC could affect its water absorption capacity.…”

Section: Resultsmentioning

confidence: 99%

“…Humic acid isolated and purifed by using recommended method of the International Humic DOI: 10.29303/aca.v1i2. 8 Nurul Ismillayli et al Substances Society [9]. Humic acid isolated then were characterized using FTIR spectroscopy.…”

Section: Isolation and Characterization Of Humic Acidmentioning

confidence: 99%

“…Application of humic acids (HA, one of the main fractions of humic substances) in agriculture as soil fertilizer and soil conditioner has been extensively discussed in the literature [7]. Containing of carboxylic and phenolic groups, humic acid provides favorable conditions for chemical reactions, biological activity and improves physical structure of soil, water holding capacity, pH buffering and accelerate transport of nutrients to plants [8]. Therefore, it was planned to synthesize a biodegradable superabsorbent with suitable for soil water conservation by crosslinking CMC and humic acid with aluminum ions.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Biodegradable Superabsorbent Polymers from Carboxymethyl Cellulose/Humic Acid

et al. 2019

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Superabsorbent polymer (SAP) blend has been synthesized from carboxymethyl cellulose (CMC), humic acid, and aluminum sulphate octadecahydrate cross-linker. SAP is hydrophilic networks that can absorb and retain huge amount of water within their structures. Humic acid as starting material of polymer, was isolated from subgrade Batujai Dam by using IHSS method. Water Absorption Capacity (WAC) measurement, FTIR analysis, and agitation tests to investigate the cross-linking process and which of Al 3+ and SO 4 2ions causes the crosslinking are carried out. Optimum cross-linking ratio of CMC and cross-linker appeared to be 2wt% corresponded to WAC determination. FTIR spectrum of CMC/humic acid blend and agitation test showed that CMC react with humic acid during polymerization process via Al 3+ ion.

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Section: Resultsmentioning

confidence: 99%

Section: Isolation and Characterization Of Humic Acidmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of Biodegradable Superabsorbent Polymers from Carboxymethyl Cellulose/Humic Acid

et al. 2019

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“…Sodium alginate is a linear [11], pH-sensitive [12], water-soluble [13], non-toxic, biodegradable [14], hydrophilic [15], biocompatible [5], safe, perishable, non-immunogenic [16,17], costeffective bioadhering, poly-anionic copolymer [18,19] polysaccharide. Na-Alg has chelating ability, low-cost transparency [20], ease of gelation [21], mucoadhesion [22], thickening ability, and film making ability.…”

Section: Propertiesmentioning

confidence: 99%

A Critical Review on the Synthesis of Natural Sodium Alginate Based Composite Materials: An Innovative Biological Polymer for Biomedical Delivery Applications

et al. 2021

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Sodium alginate (Na-Alg) is water-soluble, neutral, and linear polysaccharide. It is the derivative of alginic acid which comprises 1,4-β-d-mannuronic (M) and α-l-guluronic (G) acids and has the chemical formula (NaC6H7O6). It shows water-soluble, non-toxic, biocompatible, biodegradable, and non-immunogenic properties. It had been used for various biomedical applications, among which the most promising are drug delivery, gene delivery, wound dressing, and wound healing. For different biomedical applications, it is used in different forms with the help of new techniques. That is the reason it had been blended with different polymers. In this review article, we present a comprehensive overview of the combinations of sodium alginate with natural and synthetic polymers and their biomedical applications involving delivery systems. All the scientific/technical issues have been addressed, and we have highlighted the recent advancements.

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“…Sodium alginate (scheme 1) is an anionic hydrophilic polysaccharide extracted from marine brown algae and composed of linear chains of α‐ l ‐guluronic acid (G) and β‐ d ‐mannuronic acid (M) residues joined together by 1,4‐glucosidic linkages 30,31 . Due to its non‐toxicity, moisture retention, flexibility, permeability, biocompatibility, biodegradability, and excellent film‐forming properties, alginate has been widely used as hydrocolloid wound dressings.…”

Section: Introductionmentioning

confidence: 99%

К‐carrageenan/Na‐alginate wound dressing with sustainable drug delivery properties

Fahmy¹,

Aly²,

Sayed³

et al. 2021

Polymers for Advanced Techs

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Despite К‐carrageenan (КC) merits as a biopolymer convenient for versatile medical applications, it exhibits limitations in processability and reactivity. To overcome such limitations, КC, in this study, was blended with Na‐alginate (SA) in different weight ratios and cross‐linked with potassium ions. The swelling and gel fraction properties demonstrate that the cross‐linked КC/SA matrix of a ratio of 66.7% is suitable to be applied as a topical wound dressing. Characterization of the prepared КC/SA/K+ gel film was performed using scanning electron microscope as well as FTIR. The in vitro release of chloramphenicol as a drug model from the nominated loaded film at pH 4.1 reached a constant value after about 3 hours. To enhance the antibacterial properties of the КC/SA/K+ film, silver nanoparticles as bioactive additive were loaded in combination with chloramphenicol, and the antibacterial properties of the loaded film were evaluated, and showed high antibacterial properties against both Gram‐positive and Gram‐negative bacteria.

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Preparation and characterization of crosslinked alginate–CMC beads for controlled release of nitrate salt

Cited by 45 publications

References 22 publications

Synthesis of Biodegradable Superabsorbent Polymers from Carboxymethyl Cellulose/Humic Acid

Synthesis of Biodegradable Superabsorbent Polymers from Carboxymethyl Cellulose/Humic Acid

A Critical Review on the Synthesis of Natural Sodium Alginate Based Composite Materials: An Innovative Biological Polymer for Biomedical Delivery Applications

К‐carrageenan/Na‐alginate wound dressing with sustainable drug delivery properties

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