Alginate enriched with phytic acid for hydrogels preparation

Niţă, Loredana E.; Chiriac, Aurica P.; Ghilan, Alina; Rusu, Alina Gabriela; Tudorachi, Niță; Ţîmpu, Daniel

doi:10.1016/j.ijbiomac.2021.03.164

Cited by 50 publications

(23 citation statements)

References 50 publications

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“…The bands at 1630 and 1510 cm –1 are the characteristic absorption peaks of the lignin benzene ring skeleton, and 1034 cm –1 is the stretching peak of the −SO 3 group. , The FTIR spectra of S3L3 and S3L3PA0.5 aerogels displayed the characteristic peaks of SA and LS, indicating that the aerogels contain these two substances. After the addition of PA, the absorption peak at 1030 cm –1 (P–O–C asymmetric stretching) overlapped with the band of lignin, and a new peak also appeared at 1730 cm –1 (phosphate hydrogen radical). , Overall, there were no significant changes in the FTIR spectra of the aerogels, except that some peaks were shifted to higher wavenumbers and some to lower wavenumbers due to intramolecular/intermolecular hydrogen bonding. As a result, we supposed that the three components were primarily physical cross-links that worked together to form the aerogels’ skeleton structure, and the aerogels were cured in an oven to further improve the cross-linking strengths.…”

Section: Results and Discussionmentioning

confidence: 88%

Full Bio-Based Aerogel Incorporating Lignin for Excellent Flame Retardancy, Mechanical Resistance, and Thermal Insulation

Cen

Chen

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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Aerogels have drawn a lot of interest as prospective insulation materials in the construction industry due to their low thermal conductivity. However, the combination of excellent mechanical properties and flame retardancy is a fundamental issue with the majority of bio-based aerogels. By utilizing the ability of the alginate solution to gel in mildly acidic environments, sodium alginate (SA)/ sodium lignosulfonate (LS)/phytic acid (PA) aerogels were fabricated in a quick and facile method. To solve the issue of inorganic additives being incompatible with the bio-based substrate, we introduced lignin to it as a structural reinforcer and charforming agent, significantly improving the mechanical strengths of the aerogels, which has increased their compressive modulus by nearly 30 times. The inclusion of lignin dramatically boosted the ability of aerogels to suppress smoke while simultaneously reducing its fire index and then providing outstanding fire resistance. A superhydrophobic flame-retardant aerogel with a water contact angle of 150°was then obtained by chemical vapor deposition of methyltrichlorosilane (MTCS), further broadening its application potential. This work offers a fresh idea for the high-value utilization of lignin, and the obtained aerogels have enormous application potential in the fields of construction and transportation.

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Section: Results and Discussionmentioning

confidence: 88%

Full Bio-Based Aerogel Incorporating Lignin for Excellent Flame Retardancy, Mechanical Resistance, and Thermal Insulation

Cen

Chen

Yang

et al. 2023

ACS Sustainable Chem. Eng.

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“…The results indicate that the multiple hydrogen bonds between CNCs and ChCl/AA‐PA type PDES have been established. [ 41–45 ]…”

Section: Resultsmentioning

confidence: 99%

Polymerizable Deep Eutectic Solvent‐Based Skin‐Like Elastomers with Dynamic Schemochrome and Self‐Healing Ability

Liu

Guo

et al. 2022

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104

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Animal skin is a huge source of inspiration when it comes to multifunctional sensing materials. Bioinspired sensors integrated with the intriguing performance of skin‐like steady wide‐range strain detection, real‐time dynamic visual cues, and self‐healing ability hold great promise for next‐generation electronic skin materials. Here, inspired by the skins of a chameleon, cellulose nanocrystals (CNCs) liquid crystal skeleton is embedded into polymerizable deep eutectic solvent (PDES) via in situ polymerization to develop a skin‐like elastomer. Benefiting from the elastic ionic conductive PDES matrix and dynamic interfacial hydrogen bonding, this strategy has broken through the limitations that CNCs‐based cholesteric structure is fragile and its helical pitch is non‐adjustable, endowing the resulting elastomer with strain‐induced wide‐range (0–500%) dynamic structural colors and excellent self‐healing ability (78.9–90.7%). Furthermore, the resulting materials exhibit high stretch‐ability (1163.7%), strain‐sensing and self‐adhesive abilities, which make them well‐suitable for developing widely applicable and highly reliable flexible sensors. The proposed approach of constructing biomimetic skin‐like materials with wide‐range dynamic schemochrome is expected to extend new possibilities in diverse applications including anti‐counterfeit labels, soft foldable displays, and wearable optical devices.

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“…The structure of alginate hydrogels studied by our group does not aberrate from other alginate-based hydrogels [ 30 , 31 ]. Namely, a porous hydrogel structure enables cell settlement and allows the transport of nutrients and the export of growth factors and cytokines released by cells embedded within the scaffold.…”

Section: Discussionmentioning

confidence: 99%

Manganese-Labeled Alginate Hydrogels for Image-Guided Cell Transplantation

Araszkiewicz

Oliveira

Svendsen

et al. 2022

IJMS

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Cell transplantation has been studied extensively as a therapeutic strategy for neurological disorders. However, to date, its effectiveness remains unsatisfactory due to low precision and efficacy of cell delivery; poor survival of transplanted cells; and inadequate monitoring of their fate in vivo. Fortunately, different bio-scaffolds have been proposed as cell carriers to improve the accuracy of cell delivery, survival, differentiation, and controlled release of embedded stem cells. The goal of our study was to establish hydrogel scaffolds suitable for stem cell delivery that also allow non-invasive magnetic resonance imaging (MRI). We focused on alginate-based hydrogels due to their natural origin, biocompatibility, resemblance to the extracellular matrix, and easy manipulation of gelation processes. We optimized the properties of alginate-based hydrogels, turning them into suitable carriers for transplanted cells. Human adipose-derived stem cells embedded in these hydrogels survived for at least 14 days in vitro. Alginate-based hydrogels were also modified successfully to allow their injectability via a needle. Finally, supplementing alginate hydrogels with Mn ions or Mn nanoparticles allowed for their visualization in vivo using manganese-enhanced MRI. We demonstrated that modified alginate-based hydrogels can support therapeutic cells as MRI-detectable matrices.

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Alginate enriched with phytic acid for hydrogels preparation

Cited by 50 publications

References 50 publications

Full Bio-Based Aerogel Incorporating Lignin for Excellent Flame Retardancy, Mechanical Resistance, and Thermal Insulation

Full Bio-Based Aerogel Incorporating Lignin for Excellent Flame Retardancy, Mechanical Resistance, and Thermal Insulation

Polymerizable Deep Eutectic Solvent‐Based Skin‐Like Elastomers with Dynamic Schemochrome and Self‐Healing Ability

Manganese-Labeled Alginate Hydrogels for Image-Guided Cell Transplantation

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