Water-uptake properties of a fish protein-based superabsorbent hydrogel chemically modified with ethanol

Martins, Vilásia Guimarães; Costa, Jorge Alberto Vieira; Prentice, Carlos

doi:10.1590/0104-1428.0117

Cited by 4 publications

(1 citation statement)

References 40 publications

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“…Decreased swelling ratios of meshes with higher concentrations could have been due to the appearance of hydrogen bonds as identified by the shifts in FTIR spectra, which reduce the water uptake capacity of these meshes. Water absorption kinetics of hydrogels are found to depend on the crosslinking reactions and the physical interactions involved with the development of hydrogel structure [ 95 ].…”

Section: Resultsmentioning

confidence: 99%

3D-Printed Hybrid Collagen/GelMA Hydrogels for Tissue Engineering Applications

Nagaraj

Etxabide

Naffa

et al. 2022

Biology

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Bioprinting is an emerging technology involved in the fabrication of three-dimensional tissue constructs for the repair and regeneration of various tissues and organs. Collagen, a natural protein found abundantly in the extracellular matrix of several tissues, can be extracted from collagen-rich tissues of animals such as sheep, cows, rats, pigs, horses, birds, and marine animals. However, due to the poor printability of collagen bioinks, biocompatible collagen scaffolds that mimic the extracellular matrix (ECM) are difficult to fabricate using bioprinting techniques. Gelatin methacrylate (GelMA), a semi-synthetic polymer with tunable physical and chemical properties, has been found to be a promising biomaterial in various bioprinting applications. The printability of collagen can be improved by combining it with semi-synthetic polymers such as GelMA to develop hybrid hydrogels. Such hybrid hydrogels printed have also been identified to have enhanced mechanical properties. Hybrid GelMA meshes have not previously been prepared with collagen from ovine sources. This study provides a novel comparison between the properties of hybrid meshes with ovine skin and bovine hide collagen. GelMA (8% w/v) was integrated with three different concentrations (0.5%, 1%, and 2%) of bovine and ovine collagen forming hybrid hydrogels inks that were printed into meshes with enhanced properties. The maximum percentage of collagen suitable for integration with GelMA, forming hybrid hydrogels with a stable degradation rate was 1%. The water-soluble nature of ovine collagen promoted faster degradation of the hybrid meshes, although the structural crosslinking was identified to be higher than bovine hybrid meshes. The 1% bovine collagen hybrid meshes stood out in terms of their stable degradation rates.

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Section: Resultsmentioning

confidence: 99%

3D-Printed Hybrid Collagen/GelMA Hydrogels for Tissue Engineering Applications

Nagaraj

Etxabide

Naffa

et al. 2022

Biology

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Toward sustainable menstrual health management: focus on super absorbent polymers

Mogale,

Schutte-Smith,

Erasmus

et al. 2024

J Mater Sci

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In low- to middle-income communities, the lack of affordability of conventional sanitary products during menstrual cycles can cause psychological and health issues, ultimately affecting their quality of life. It is crucial to develop alternative products that are affordable and accessible to all while also promoting menstrual health and hygiene. Super absorbent polymers (SAPs) are a vital component in current disposable sanitary pads and nappies. However, these SAPs are often non-biodegradable and non-biocompatible. Therefore, the use of eco-friendly materials for the production of SAPs is gaining popularity in the hygiene industry, as it offers a means to reduce the carbon footprint and environmental impact associated with traditional SAPs made from non-renewable petroleum-based materials. SAPs made from polysaccharides often have naturally occurring antibacterial properties, making them appealing for commercial applications in sanitary products such as sanitary pads. In addition, the move toward reusable sanitary pads with antibacterial properties can significantly reduce waste generated by single-use products and prevent the growth of bacteria, improving the safety and hygiene of the product. Furthermore, computational modeling and artificial intelligence are now important tools in SAP synthesis, providing advantages such as predicting polymer properties, rationalizing synthesis pathways, and improving quality control. These tools can reduce synthesis costs by eliminating the need for trial-and-error approaches in polymer synthesis, ultimately promoting more affordable products for end users. Overall, these advancements in polymer synthesis and material design can help to create a more sustainable industry and promote menstrual hygiene and product accessibility to those who need it most.

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