Agarose based multifunctional materials: Evaluation of thixotropy, self-healability and stretchability

Chaudhary, Jai Prakash; Chejara, Dharmesh R.; Makwana, Dipak; Prasad, Kamalesh; Meena, Ramavatar

doi:10.1016/j.carbpol.2014.08.024

Cited by 11 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, thermogel, thermogel-GO and thermogel-rGO demonstrated a thixotropic behavior (Fig. S2B), meaning that the hydrogels become less viscous if a shear stress is applied and that then they recover the solid form [54,55]. Additionally, the viscosity of the hydrogels was influenced by the temperature, indicating their thermoresponsive assembly (Fig.…”

Section: Preparation and Characterization Of The Injectable In Situ F...mentioning

confidence: 95%

Injectable in situ forming thermo-responsive graphene based hydrogels for cancer chemo-photothermal therapy and NIR light-enhanced antibacterial applications

Lima‐Sousa

Melo‐Diogo

Alves

et al. 2020

Materials Science and Engineering: C

View full text Add to dashboard Cite

Section: Preparation and Characterization Of The Injectable In Situ F...mentioning

confidence: 95%

Injectable in situ forming thermo-responsive graphene based hydrogels for cancer chemo-photothermal therapy and NIR light-enhanced antibacterial applications

Lima‐Sousa

Melo‐Diogo

Alves

et al. 2020

Materials Science and Engineering: C

View full text Add to dashboard Cite

“…In continuation with our previous study, we have successfully tested agarose derivative (agarose-gallate) in the reduction of GO 18 . Hence, this study provides an example of a sustainable process for the synthesis of rGO through a green approach using seaweed polysaccharide-based reducing agent (Ag-GA Est ).…”

Section: Resultsmentioning

confidence: 88%

“…Reduced graphene oxide can be obtained using several reducing agents such as hydrazine, NaBH 4 [12][13][14] . Recently, we have successfully tested seaweed polysaccharide agarose derivatives for the preparation of eco-friendly mercury sensor, self-healing and stretchable materials [15][16][17][18] . Till date, there is no report on the reduction of GO using agarose derivatives.…”

mentioning

confidence: 99%

Graphene Oxide Reduction Activity of Seaweed Polymer Derivative:Efficient Bio-Based Alternative

et al. 2017

Self Cite

View full text Add to dashboard Cite

The present study demonstrates utilization of functionalized seaweed polysaccharide, namely agarosegallate (Ag-GA Est ) for the preparation of reduced graphene oxide (rGO) under mild reaction conditions. Ag-GA Est obtained with the lowest degree of substitution (degree of substitution (DS) = 0.45; with 1 : 0.5 w/w agarose : gallic acid) shows excellent performance compared to its high DS (1.1; with 1 : 2.0 w/w agarose : gallic acid) ester derivatives. Further, the formation of rGO was confirmed using UV-Vis, TEM, FTIR, Raman spectroscopy, elemental and XRD analysis. This study describes a new application of seaweedderived polysaccharides.

show abstract

“…Storage and loss modulus as a function of time (0–600 s) at controlled shear (1 s −1 ) and temperature (37 °C) was carried out ( Figure 3 d). The experimental data demonstrated typical viscoelastic type behaviour of the gel material with less time dependency, where storage modulus (G′) of both conjugates was predominant over loss modulus (G′′) throughout the experiment, indicating more solid like behaviour of the gel [ 35 ]. In addition, stable values for G′ and G′′ throughout the experiments demonstrated colloidal stability of the gels [ 36 ].…”

Section: Results Discussionmentioning

confidence: 99%

Synthesis and Evaluation of a Sodium Alginate-4-Aminosalicylic Acid Based Microporous Hydrogel for Potential Viscosupplementation for Joint Injuries and Arthritis-Induced Conditions

et al. 2017

View full text Add to dashboard Cite

A microporous hydrogel was developed using sodium alginate (alg) and 4-aminosalicylic acid (4-ASA). The synthesized hydrogel was characterized using various analytical techniques such as Fourier transform infrared spectroscopy (FTIR), Carbon-13 nuclear magnetic resonance (13C-NMR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC). Additonal carboxyl and hydroxyl functional groups of 4-ASA provided significant lubrication and stress-triggered sol-gel transition to the conjugated hydrogel. In addition, cytotoxicity analysis was undertaken on the conjugated hydrogel using human dermal fibroblast-adult (HDFa) cells, displaying non-toxic characteristics. Drug release profiles displaying 49.6% in the first 8 h and 97.5% within 72 h, similar to the native polymer (42.8% in first 8 h and 90.1% within 72 h). Under applied external stimuli, the modified hydrogel displayed significant gelling properties and structure deformation/recovery behaviour, confirmed using rheological evaluation (viscosity and thixotropic area of 8095.3 mPas and 26.23%, respectively). The modified hydrogel, thus, offers great possibility for designing smart synovial fluids as a biomimetic aqueous lubricant for joint-related injuries and arthritis-induced conditions. In addtion, the combination of thixotropy, non-toxicity, and drug release capabilities enables potential viscosupplementation for clinical application.

show abstract

Agarose based multifunctional materials: Evaluation of thixotropy, self-healability and stretchability

Cited by 11 publications

References 22 publications

Injectable in situ forming thermo-responsive graphene based hydrogels for cancer chemo-photothermal therapy and NIR light-enhanced antibacterial applications

Injectable in situ forming thermo-responsive graphene based hydrogels for cancer chemo-photothermal therapy and NIR light-enhanced antibacterial applications

Graphene Oxide Reduction Activity of Seaweed Polymer Derivative:Efficient Bio-Based Alternative

Synthesis and Evaluation of a Sodium Alginate-4-Aminosalicylic Acid Based Microporous Hydrogel for Potential Viscosupplementation for Joint Injuries and Arthritis-Induced Conditions

Contact Info

Product

Resources

About