Rheological properties of concentrated solutions of fucoidan in water and in an ionic liquid

Horinaka, Jun ichi; Kimura, A; Takigawa, Toshikazu

doi:10.1016/j.polymer.2020.123090

Cited by 5 publications

(3 citation statements)

References 21 publications

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“…where R is the gas constant, C (mg/L) is the concentration of PVA, and T (K) is the absolute temperature. G N 0 has been determined by the value of G′ at a frequency where the ratio G″/G′ attains a minimum value as proposed by Horinaka et al 31 The values of M e for the PVA samples without GO are between 293 × 10 4 and 110 × 10 4 g/mol for the studied range of PVA concentrations (75P−150P). The introduction of GO in PVA samples induces an increase of G N 0 from 330 Pa (0G150P) to 6363 Pa (12G150P) and then a decrease of M e from 110 × 10 4 to 6 × 10 4 g/mol if we consider that eq 3 is valid for composites.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Modulation of Viscoelastic and Absorption Properties of Poly(vinyl alcohol)-graphene Oxide Composites

Boucenna

Thévenet

et al. 2021

ACS Appl. Polym. Mater.

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PVA (poly(vinyl alcohol))/GO (graphene oxide) composites were prepared by mixing the PVA aqueous solution and GO aqueous dispersion through the freezing−thawing method. The morphology and chemical structure of GO and composites were investigated by scanning electron microscopy and X-ray photoelectron spectroscopy, respectively. Viscoelastic and swelling properties and absorption capacities of cationic dye methylene blue (MB) were studied as a function of initial concentration of PVA and GO and the number of freezing−thawing cycles. The highest improvement in linear viscoelastic properties of PVA/GO composites was observed with the increase of GO concentration. Experimental data of the kinetic study of MB absorption were well fitted by the pseudo-first-order kinetic model and it was clearly shown that the greatest enhancement of MB absorption was also achieved by increasing the GO concentration. A correlation between swelling, absorption, and viscoelastic and structural properties of PVA/GO composites was proposed.

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Section: ■ Results and Discussionmentioning

confidence: 99%

“…G N 0 has been determined by the value of G ′ at a frequency where the ratio G ″/ G ′ attains a minimum value as proposed by Horinaka et al…”

Section: Resultsmentioning

confidence: 99%

Modulation of Viscoelastic and Absorption Properties of Poly(vinyl alcohol)-graphene Oxide Composites

Boucenna

Thévenet

et al. 2021

ACS Appl. Polym. Mater.

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show abstract

“…Fucoidan also has a vital function on biomaterial formation through electrostatic interactions, dependent on fucoidan concentration [ 39 ]. However, our rheological results demonstrated that despite the relevance of the presence of fucoidan, an extra concentration could respond negatively in the formation of bonds, which consequently would be reflected in rheological properties [ 40 , 41 ]. Thus, a balance between collagen and fucoidan amounts is required to create structures with significant stability.…”

Section: Resultsmentioning

confidence: 99%

A Design of Experiments (DoE) Approach to Optimize Cryogel Manufacturing for Tissue Engineering Applications

et al. 2022

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Marine origin polymers represent a sustainable and natural alternative to mammal counterparts regarding the biomedical application due to their similarities with proteins and polysaccharides present in extracellular matrix (ECM) in humans and can reduce the risks associated with zoonosis and overcoming social- and religious-related constraints. In particular, collagen-based biomaterials have been widely explored in tissue engineering scaffolding applications, where cryogels are of particular interest as low temperature avoids protein denaturation. However, little is known about the influence of the parameters regarding their behavior, i.e., how they can influence each other toward improving their physical and chemical properties. Factorial design of experiments (DoE) and response surface methodology (RSM) emerge as tools to overcome these difficulties, which are statistical tools to find the most influential parameter and optimize processes. In this work, we hypothesized that a design of experiments (DoE) model would be able to support the optimization of the collagen-chitosan-fucoidan cryogel manufacturing. Therefore, the parameters temperature (A), collagen concentration (B), and fucoidan concentration (C) were carefully considered to be applied to the Box–Behnken design (three factors and three levels). Data obtained on rheological oscillatory measurements, as well as on the evaluation of antioxidant concentration and adenosine triphosphate (ATP) concentration, showed that fucoidan concentration could significantly influence collagen-chitosan-fucoidan cryogel formation, creating a stable internal polymeric network promoted by ionic crosslinking bonds. Additionally, the effect of temperature significantly contributed to rheological oscillatory properties. Overall, the condition that allowed us to have better results, from an optimization point of view according to the DoE, were the gels produced at −80 °C and composed of 5% of collagen, 3% of chitosan, and 10% fucoidan. Therefore, the proposed DoE model was considered suitable for predicting the best parameter combinations needed to develop these cryogels.

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Effect of fucoidan on rheological properties of xanthan gum-guar gum mixtures

Bak,

Yoo

2024

Food Bioscience

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Rheological properties of concentrated solutions of fucoidan in water and in an ionic liquid

Cited by 5 publications

References 21 publications

Modulation of Viscoelastic and Absorption Properties of Poly(vinyl alcohol)-graphene Oxide Composites

Modulation of Viscoelastic and Absorption Properties of Poly(vinyl alcohol)-graphene Oxide Composites

A Design of Experiments (DoE) Approach to Optimize Cryogel Manufacturing for Tissue Engineering Applications

Effect of fucoidan on rheological properties of xanthan gum-guar gum mixtures

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