Effects of sodium carboxymethyl cellulose on rheological properties and gelation behaviors of sodium alginate induced by calcium ions

Zheng, Jiong; Zeng, Ruiqi; Zhang, Fusheng; Kan, Jianquan

doi:10.1016/j.lwt.2018.12.081

Cited by 50 publications

(19 citation statements)

References 35 publications

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“…The dynamic modulus further explores the system interactions and performance by evaluating gel stiffness. The storage modulus (G') of pure alginate is consistently lower than the loss modulus (G") under a variety of gel conditions, and the same development is seen in Figure 5 [19]. While the viscous property of alginate remains dominant, the difference between the two moduli decreased at higher angular frequencies revealing a decrease in phase angle and a fluid-like viscoelastic behavior.…”

Section: Viscoelastic Modulusmentioning

confidence: 52%

“…The elastic component of the system took stronger dominance as methylcellulose concentration increased, and gel stiffness was enhanced. While the variance of total gel concentration between samples generates some inconclusively, this outcome is similarly embodied by an alginate-carboxymethylcellulose system, as studied by Zheng et al [19].…”

Section: Viscoelastic Modulusmentioning

confidence: 97%

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Rheological Investigation of Thermoresponsive Alginate-Methylcellulose Gels for Epidermal Growth Factor Formulation

2020

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Epidermal growth factors (EGF) serve as promising candidates for skin regeneration and rejuvenation products, but their instability hinders them from widespread use. Protective immobilization and directed release can be achieved through implementing a hydrogel delivery system. Alginate and methylcellulose are both natural polymers offering biocompatibility and environmental sensitivity. This blended gel system was investigated rheologically to understand its performance in topical applications. Alginate and methylcellulose were found to form a synergistic gel system that resulted in superior viscosity and thermoresponsiveness compared to the individual components. Increasing methylcellulose concentration directly enhanced gel elasticity, and higher viscosities provided better thermal protection of EGF. The addition of EGF at 3.33 mg/mL resulted in a decrease of viscosity but an increase in viscoelastic modulus. EGF concentration also played a large role in shear viscosity and thermoresponsiveness of the ternary system. An alginate-methylcellulose system presents promising rheological tunability, which may provide EGF thermal protection in a topical delivery format.

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Section: Viscoelastic Modulusmentioning

confidence: 52%

Section: Viscoelastic Modulusmentioning

confidence: 97%

Rheological Investigation of Thermoresponsive Alginate-Methylcellulose Gels for Epidermal Growth Factor Formulation

2020

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“…The PCC-GDL was used to prepare the composite crosslinked system, using GDL to slowly release H + after dissolving in water, and the H+ first reacted with PCC to slowly release calcium ions, and the released Ca 2+ cross-linked with sodium alginate molecules to form an overall more uniform high-water colloidal material, avoiding the uneven structure of the high-water colloidal material caused by the rapid reaction of sodium alginate and calcium ions [33]. The formation mechanism is shown in Figure 2.…”

Section: Principle Of the Testmentioning

confidence: 99%

Research on the Damping Performance of Mining Highly Efficient Water-Retaining Colloidal Material Against the Spontaneous Combustion of Coal

Jin¹,

Li²,

Liu³

et al. 2021

ACSM

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In order to solve the shortcomings of the traditional mining anti-extinguishing gel material such as low strength and poor water retention, a high hydrocolloid anti-extinguishing material was developed with sodium alginate and light calcium carbonate as the base material and gluconolactone as the retarder, which was mixed and reacted. The base material ratio of highly efficient water-retaining colloidal material for coal void filling was determined as 2% SA + 0.5% PCC + 1% GDL with a moulding time of 4.5 min, while the base material ratio of highly efficient water-retaining colloidal material for extinguishing high temperature fires was 2.5% SA + 1% PCC + 1% GDL with a moulding time of 2.5 min. The highly efficient water-retaining colloidal material was found to reduce the concentration of signature gas and delay the characteristic temperature point and increase the activation energy of coal oxidation, which indicates that the highly efficient water-retaining colloidal material can effectively inhibit the spontaneous combustion process of coal at low temperature stage. Infrared spectroscopy experiments were conducted to investigate the microscopic resistance mechanism of the highly efficient water-retaining colloidal material, and the results showed that the highly efficient water-retaining colloidal material mainly reduce the activity of Ar-C-O-, -COO-, -CH3, -CH2 and -OH in coal to inhibit the spontaneous combustion of coal.

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“…The mechanical properties and barrier properties of the membranes studied depended not only on the compounds used but also on the compatibility of the loose network structure of the pectin membrane and the network structure of the alginate membrane. In the process of alginate gelation, the alginate formed a compact structure with the increase of cation concentration (Zheng, Zeng, Zhang, & Kan, 2019), but the porosity, water content, or gel permeability decreased.…”

Section: Introductionmentioning

confidence: 99%

Freeze–thaw enhanced stability and mechanical strength of polysaccharide‐based sodium alginate/hyaluronic acid films

Zhang

Han³

et al. 2021

Journal of Food Safety

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An edible polysaccharide film with high tensile strength and biodegradability was prepared by freeze-thaw treatment with sodium alginate (SA) and hyaluronic acid (HA) and cross-linking with calcium lactate. The SA/HA ratio, the calcium concentration, the number of freeze-thaw cycles, and the calcification time all have significant effects on the tensile strength of SA/HA films. An increase in tensile strength was obtained due to the reaction of 3% calcium lactate with 60% SA. Compared with the control group, the tensile strength of the SA/HA films developed in this study increased by 214% from 3.188 to 10.02 MPa. The compatibility of films was evaluated by Fourier transform infrared spectroscopy; the absorption peaks of SA and sodium hyaluronate had shifted to a wavelength of 3,403 $ 3,411 cm À1 after freeze-thaw treatment, and a strong interaction occurred at a wavelength of 1,328 cm À1 . In addition, the swelling and solubility of the SA/HA film decreased by half during the freeze-thaw period. Further, scanning electron microscopy showed that the cross sections of the films were uniform and compact after two freeze-thaw treatments. SA/HA films that exhibited increased tensile strength and that had the potential to overcome the poor water vapor barrier problems traditionally experienced with these films were developed in this study.

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Effects of sodium carboxymethyl cellulose on rheological properties and gelation behaviors of sodium alginate induced by calcium ions

Cited by 50 publications

References 35 publications

Rheological Investigation of Thermoresponsive Alginate-Methylcellulose Gels for Epidermal Growth Factor Formulation

Rheological Investigation of Thermoresponsive Alginate-Methylcellulose Gels for Epidermal Growth Factor Formulation

Research on the Damping Performance of Mining Highly Efficient Water-Retaining Colloidal Material Against the Spontaneous Combustion of Coal

Freeze–thaw enhanced stability and mechanical strength of polysaccharide‐based sodium alginate/hyaluronic acid films

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