Viscoelastic and rheological properties of nanocomposite-forming solutions based on gelatin and montmorillonite

Jorge, Mello; Flaker, Christian Humberto Caicedo; Nassar, Samira Fernandes; Moraes, Izabel Cristina Freitas; Bittante, Ana Mônica Quinta Barbosa; Sobral, Paulo José do Amaral

doi:10.1016/j.jfoodeng.2013.07.007

Cited by 37 publications

(44 citation statements)

References 33 publications

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“…Addition of Laponite into the SSG hydrogel did not affect ζ-potential significantly, even in the high concentration of Laponite (20 wt.%) used (Table 1). It was in good accordance with reported results for gelatin-montmorillonite (MMT) solutions (Jorge et al, 2014). Only a significant increase of the negative value of the ζ-potential observed when the Laponite concentration increased to 25 wt.% (-56.46 mV), which approved that the polymer chains adsorbed on the particle surface.…”

Section: Zeta (ζ)-Potentialsupporting

confidence: 92%

“…With high enough particle volume fraction, polymer bridging might be responsible for forme a more massive percolated 3D network resulting in a stronger, elastic hydrogel structure (Kennedy et al, 2015). These results agreed with other authors who have found the larger size aggregate structures in gelatin-MMT (Jorge et al, 2014), gelatin-TiO2 filmogenic solutions (He et al, 2016) and wheat gluten-montmorillonite gel (Mascheroni, Chalier, Gontard, & Gastaldi, 2010), upon nanofiller contents increasing.…”

Section: Particle Sizesupporting

confidence: 89%

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Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Oleyaei

Razavi

Mikkonen

2018

Carbohydrate Polymers

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In this study, the physico-chemical and rheo-mechanical properties of sage seed gum hydrogel, reinforced by various ratios (0-25 wt.%) of Laponite, were investigated. Particles size measurements indicated the formation of large SSG-Laponite microstructures upon nanoparticle adding, due to the interactions generated between the anionic SSG and the charged surfaces of clay platelets. Laponite affected the surface tension and density of the SSG-based systems significantly, but only influenced the ζ-potential above 20 wt.%. The dynamic rheological behavior of SSG-based nanocomposites reflected the reinforcing effect of secondary structures and percolated three-dimensional network, suggested a structural modification of the hydrogels with the Laponite loading. An improvement in texture profile analysis parameters was observed in Laponite content ≤5 wt.%, whereas for nanoparticles >5 wt.%, a significant decrease was obtained. In conclusion, Laponite improved the rheological and physico-chemical properties of SSG-based hydrogel and extended its potential as promising future bio-products for industrial applications.

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Section: Zeta (ζ)-Potentialsupporting

confidence: 92%

Section: Particle Sizesupporting

confidence: 89%

Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Oleyaei

Razavi

Mikkonen

2018

Carbohydrate Polymers

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“…The dynamic rheological curves of the CSPs dispersions at room temperature had slightly parabolic forms (data not shown), an indicator of non‐Newtonian behaviour, which was due to the combination of the soluble gelatin and insoluble collagen particles. This rheological behaviour was consistent with that of the gelatin solution in the presence of montmorillonite (Jorge et al ., ). At a certain pH value, the viscosity of the CSPs showed a first decrease, then increase and last decrease tendency from the viscosity–pH curves (shown in Fig.…”

Section: Resultsmentioning

confidence: 97%

Physicochemical characteristics and gelation properties of collagen superfine powder from swine skin: the effects of preheating treatment

Wang

Zhao

2016

Int J of Food Sci Tech

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Following different preheating treatments (60°C for 20 min; 80°C for 20 min; or 120°C for 10 min, referred as T 1 , T 2 and T 3 ), edible collagen superfine powder (CSP) from swine skin was prepared by superfine grinding method. The CSPs showed a preheating-dependent decrease in the D 50 , with different degrees of hydrolysis (9.51-31.05%). A significant effect of preheating on rheological properties of the CSP aqueous dispersions at pH 4-9 was observed, wherein T 2 had the biggest viscosity and water holding capacity. All the 5% CSP dispersions were transformed into stable cold-set gels after heating at 50-90°C for 20 min, with insignificant differences in strength. These attributes were consistent with microstructures of the CSP gels detected by scanning electron microscope.

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“…Gelatin-based films usually present good mechanical resistance and high elasticity but are also sensitive to environmental conditions, as relative humidity, and are affected by several factors such as pH, heat treatment, addition of plasticizers, ion concentration, protein concentration, and its molecular conformation [6]. An alternative to enhance the gelatin-based films properties that has attracted the interest of researchers is related to the reinforcement of films with nanoparticles, producing a material often called bionanocomposites or only nanocomposites [7][8][9]. The nanocomposites films are thin materials formed by a biopolymer matrix reinforced with a dispersed nanoscale filler.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable Films Based on Gelatin and Montmorillonite Produced by Spreading

Jorge

Alexandre

Flaker

et al. 2015

International Journal of Polymer Science

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The main objective of this research was to study the properties of gelatin-based nanocomposites reinforced with the montmorillonite (MMT). The gelatin-based nanocomposites were prepared with solutions of 5 g of gelatin/100 g of film-forming solution, 0–10 g of montmorillonite/100 g of gelatin, and 30 g of glycerol/100 g of gelatin and were stored for 7 days at 58% relative humidity or in silica gel, depending on the type of assay. The reinforcement of gelatin-based nanocomposites with montmorillonite increased their thickness and decreased the moisture content. Tensile strength and Young’s modulus increased revealing more resistant and rigid nanocomposites. The increase in MMT concentration slightly changed the X-ray diffraction spectra indicating some loss of crystallinity and reinforced films presented less homogeneous structures. The montmorillonite concentration had not a clear effect on the thermal properties and FTIR spectra of nanocomposites were very similar to separated compounds.

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Viscoelastic and rheological properties of nanocomposite-forming solutions based on gelatin and montmorillonite

Cited by 37 publications

References 33 publications

Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Novel nanobiocomposite hydrogels based on sage seed gum-laponite: Physico-chemical and rheological characterization

Physicochemical characteristics and gelation properties of collagen superfine powder from swine skin: the effects of preheating treatment

Biodegradable Films Based on Gelatin and Montmorillonite Produced by Spreading

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