Eco-friendly synthesis of phthalate angico gum towards nanoparticles engineering using Quality by Design (QbD) approach

Oliveira, Thaísa Cardoso de; Oliveira, Antônia Carla de Jesus; Patriota, Yuri Basílio Gomes; Chaves, Luíse L.; Ribeiro, Fábio de Oliveira Silva; Paula, Regina C.M. de; Filho, Edson Cavalcanti da Silva; Silva, Durcilene Alves da; Soares, Mônica Felts de La Roca; Soares-Sobrinho, José Lamartine

doi:10.1016/j.ijbiomac.2021.09.012

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…The diffractograms of polysaccharides and aerogels at pH 6 are represented in Figure 5. As was already reported for the gums, the AG diffractogram showed the characteristics of an amorphous material with a wide diffraction peak at 2θ = 19.5 • and the SA was characteristic of a semi-crystalline material [36,37]. The SA diffractogram has an intense diffraction peak at 2θ = 13.36 • that is related to a long-range chain order and occurs due to hydrogen bonds and polar intraand intermolecular interactions [38].…”

Section: Analysis Of Crystalline Phases and Microstructuresupporting

confidence: 70%

Development of a New Clay-Based Aerogel Composite from Ball Clay from Piauí, Brazil and Polysaccharides

Lopes,

Brito,

Neto

et al. 2023

Polymers

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The incorporation of polymeric components into aerogels based on clay produces a significant improvement in the physical and thermal properties of the aerogels. In this study, clay-based aerogels were produced from a ball clay by incorporation of angico gum and sodium alginate using a simple, ecologically acceptable mixing method and freeze-drying. The compression test showed a low density of spongy material. In addition, both the compressive strength and the Young’s modulus of elasticity of the aerogels showed a progression associated to the decrease in pH. The microstructural characteristics of the aerogels were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The chemical structure was studied by infrared spectroscopy with Fourier transform (FTIR). The TGA curves from a non-oxidizing atmosphere indicated that the clay had a mass loss of 9% above 500 °C and that due to the presence of polysaccharides, the aerogels presented a decomposition of 20% at temperatures above 260 °C. The DSC curves of the aerogels demonstrated a displacement in higher temperatures. In conclusion, the results showed that aerogels of ball clay with the incorporation of polysaccharides, which are still minimally studied, have potential application as thermal insulation considering the mechanical and thermal results obtained.

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Section: Analysis Of Crystalline Phases and Microstructuresupporting

confidence: 70%

Development of a New Clay-Based Aerogel Composite from Ball Clay from Piauí, Brazil and Polysaccharides

Lopes,

Brito,

Neto

et al. 2023

Polymers

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“…The scaffold showed four decomposition stages. The first stage occurred around 56 °C, which is related to the loss of moisture and low molecular weight components that are present in the scaffold structure [ 37 , 39 ]. The second stage was at 138 °C.…”

Section: Resultsmentioning

confidence: 99%

“…CG has functional groups that can be modified, such as the phthalation reaction [ 36 , 37 ]. Such modification by the insertion of hydrophobic groups in the polymer chain makes CG amphiphilic and highly anionic [ 38 , 39 ]. These characteristics might allow its potential application to produce scaffolds.…”

Section: Introductionmentioning

confidence: 99%

Novel Scaffold Based on Chitosan Hydrogels/Phthalated Cashew Gum for Supporting Human Dental Pulp Stem Cells

Leite

Oliveira²,

Quelemes³

et al. 2023

Pharmaceuticals

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Hydrogels are structures that have value for application in the area of tissue engineering because they mimic the extracellular matrix. Naturally obtained polysaccharides, such as chitosan (CH) and cashew gum, are materials with the ability to form polymeric networks due to their physicochemical properties. This research aimed to develop a scaffold based on chitosan and phthalated cashew tree gum and test it as a support for the growth of human mesenchymal stem cells. In this study, phthalation in cashew gum (PCG) was performed by using a solvent-free route. PCG-CH scaffold was developed by polyelectrolyte complexation, and its ability to support adherent stem cell growth was evaluated. The scaffold showed a high swelling rate. The pore sizes of the scaffold were analyzed by scanning electron microscopy. Human dental pulp stem cells (hDPSCs) were isolated, expanded, and characterized for their potential to differentiate into mesenchymal lineages and for their immunophenotypic profile. Isolated mesenchymal stem cells presented fibroblastoid morphology, plastic adhesion capacity, and differentiation in osteogenic, adipogenic, and chondrogenic lineages. Mesenchymal stem cells were cultured in scaffolds to assess cell adhesion and growth. The cells seeded on the scaffold showed typical morphology, attachment, and adequate distribution inside the matrix pores. Thus, cells seeded in the scaffold may improve the osteoinductive and osteoconductive properties of these biomaterials.

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Comparative study of the thermal degradation of angico gum via three non-isothermal methods

Lopes,

Silva-Filho,

Brito

et al. 2024

Polym. Bull.

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Eco-friendly synthesis of phthalate angico gum towards nanoparticles engineering using Quality by Design (QbD) approach

Cited by 13 publications

References 41 publications

Development of a New Clay-Based Aerogel Composite from Ball Clay from Piauí, Brazil and Polysaccharides

Development of a New Clay-Based Aerogel Composite from Ball Clay from Piauí, Brazil and Polysaccharides

Novel Scaffold Based on Chitosan Hydrogels/Phthalated Cashew Gum for Supporting Human Dental Pulp Stem Cells

Comparative study of the thermal degradation of angico gum via three non-isothermal methods

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