Gum Arabic: A promising candidate for the construction of physical hydrogels exhibiting highly stretchable, self-healing and tensility reinforcing performances

Wu, Dong; Xu, Jingyan; Chen, Yong-Gui; Yi, Meirong; Wang, Qigang

doi:10.1016/j.carbpol.2017.10.076

Cited by 42 publications

(20 citation statements)

References 37 publications

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“…The initial tangent modulus or apparent modulus of elasticity (Ea) is a measure of the degree of the material stiffness at low deformation level. As expected, with increasing CNPs from 0 to 15 and 25 wt%, the values of Ea first increased from 106.4 to 177.6 g/s, and then decreased to 103.9 g/s (SSG-25TiO2), revealed that TiO2-NPs act as physical crosslinking reagents [58] and created a stiffer microstructure at low TiO2 levels (≤ 15 wt%). The Ea reduction with higher CNPs can be attributed to the degradation of the integrity of the hydrogels network structure as discussed earlier.…”

Section: Large Deformation Propertiessupporting

confidence: 74%

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Oleyaei

Razavi

Mikkonen

2018

International Journal of Biological Macromolecules

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Sage seed gum (SSG) is a promising biopolymer candidate for utilization and substitution prevalent galactomannan gels of interest in soft biomaterial applications. Herein, physicochemical and rheo-mechanical properties of SSG matrix reinforced by various titanium dioxide (TiO) nanoparticles loading (0-25wt%) were monitored. Particle size and density of the nanocomposite increased with raising TiO content, due to the creation of more compact agglomerated and aggregated microstructure. Increasing the particle size resulted in lower electrophoretic mobility of SSG-TiO systems upon nanoparticles addition, confirmed the adsorption of TiO on the SSG macromolecule. Mechanical spectra of the SSG-based nanocomposites demonstrated a more solid-like behavior by lower frequency-dependent viscoelastic moduli, suggested a structural decoration of the nanohybrid gels discussed in terms of polymer bridging effect and formation of percolated matrix-particle superstructure. Crucial textural parameters improved with increasing TiO until a critical level (15 wt%), after which further increments in filler resulted in a reduction of hardness, adhesiveness and apparent modulus of elasticity. Deformation of rod-like junction zones acting as physical crosslinks in the system and fracture theory were used to explain the strain-stiffening and adhesive behavior of SSG-based gels, respectively. The nanocomposite gels with tunable functional properties might be ideal candidates for biomaterial industry.

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Section: Large Deformation Propertiessupporting

confidence: 74%

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Oleyaei

Razavi

Mikkonen

2018

International Journal of Biological Macromolecules

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“…For many nanocomposite gels, the time the two cut surfaces have to be in contact in order for self-healing to occur strongly depends on the temperature [107,110,118,121,122,123,124,125]. Haraguchi et al [110] showed that at a temperature of 37 °C, the self-healing was completed, with a 100% recovery of tensile strength, after 48 h, see Figure 8.…”

Section: Novel Functionalitiesmentioning

confidence: 99%

Nanoparticle-Hydrogel Composites: From Molecular Interactions to Macroscopic Behavior

2019

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Hydrogels are materials used in a variety of applications, ranging from tissue engineering to drug delivery. The incorporation of nanoparticles to yield composite hydrogels has gained substantial momentum over the years since these afford tailor-making and extend material mechanical properties far beyond those achievable through molecular design of the network component. Here, we review different procedures that have been used to integrate nanoparticles into hydrogels; the types of interactions acting between polymers and nanoparticles; and how these underpin the improved mechanical and optical properties of the gels, including the self-healing ability of these composite gels, as well as serving as the basis for future development. In a less explored approach, hydrogels have been used as dispersants of nanomaterials, allowing a larger exposure of the surface of the nanomaterial and thus a better performance in catalytic and sensor applications. Furthermore, the reporting capacity of integrated nanoparticles in hydrogels to assess hydrogel properties, such as equilibrium swelling and elasticity, is highlighted.

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“…The gum Arabic has in its chemical structure carboxylic groups, which justifies the presence of negative charges. The bands at 1603 cm −1 and 1421 cm −1 are derived from the asymmetric and symmetric stretching vibration of carboxylic acid (−COO − ), respectively, which is attributed to the carboxylate groups of the glucuronic acid present in the gum Arabic [39][40][41][42]. To represent the elongation of the C-O bond, bands were detected in the regions of 1077 cm −1 and 1026 cm −1 .…”

Section: Evaluation Of the Functional Groups Of The Microcapsules (Ftir)mentioning

confidence: 99%

Vehiculation of Methyl Salicylate from Microcapsules Supported on Textile Matrix

et al. 2021

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In recent years, textile industries have focused their attention on the development of functional finishing that presents durability and, consequently, controlled release. However, in the case of methyl salicylate microcapsules supported on a textile matrix, studies indicate only the interactions between substrate and microcapsules and the drug delivery system, not applying the release equations. This study reports the mechanism and kinetics of controlled release of microcapsules of gelatin and gum Arabic containing methyl salicylate as active ingredient incorporated into textile matrices. According to the results presented, it was possible to verify that the wall materials participated in the coacervation process, resulting in microcapsules with well-defined geometry, besides promoting the increase of the thermal stability of the active principle. The samples (100% cotton, CO, and 100% polyamide, PA) functionalized with microcapsules released methyl salicylate in a controlled manner, based on the adjustment made by the Korsmeyer–Peppas model, indicating a Fickian mechanism. The influence of temperature was noticeable when the samples were subjected to washing, since with higher temperature (50 °C), the release was more pronounced than when subjected to lower temperature (37 °C). The results presented in this study indicate that the mechanism of backbone release is influenced by the textile matrix and by the durability of the microcapsule during the wash cycles.

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Gum Arabic: A promising candidate for the construction of physical hydrogels exhibiting highly stretchable, self-healing and tensility reinforcing performances

Cited by 42 publications

References 37 publications

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Physicochemical and rheo-mechanical properties of titanium dioxide reinforced sage seed gum nanohybrid hydrogel

Nanoparticle-Hydrogel Composites: From Molecular Interactions to Macroscopic Behavior

Vehiculation of Methyl Salicylate from Microcapsules Supported on Textile Matrix

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