Bibliografías temáticas / Bionanocomposite membranes

Literatura académica sobre el tema "Bionanocomposite membranes"

Autor: Grafiati
Publicado: 6 de septiembre de 2023

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Artículos de revistas sobre el tema "Bionanocomposite membranes"

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Râpă, Maria, Laura Mihaela Stefan, Traian Zaharescu, Ana-Maria Seciu, Anca Andreea Țurcanu, Ecaterina Matei, Andra Mihaela Predescu, Iulian Antoniac y Cristian Predescu. "Development of Bionanocomposites Based on PLA, Collagen and AgNPs and Characterization of Their Stability and In Vitro Biocompatibility". Applied Sciences 10, n.º 7 (26 de marzo de 2020): 2265. http://dx.doi.org/10.3390/app10072265.

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Bionanocomposites including poly(lactic acid) (PLA), collagen, and silver nanoparticles (AgNPs) were prepared as biocompatible and stable films. Thermal properties of the PLA-based bionanocomposites indicated an increase in the crystallinity of PLA plasticized due to a small quantity of AgNPs. The results on the stability study indicate the promising contribution of the AgNPs on the durability of PLA-based bionanocomposites. In vitro biocompatibility conducted on the mouse fibroblast cell line NCTC, clone 929, using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay showed high values of cell viability (>80%) after cell cultivation in the presence of bionanocomposite formulations for 48 h, while the percentages of lactate dehydrogenase (LDH) released in the culture medium were reduced (<15%), indicating no damages of the cell membranes. In addition, cell cycle analysis assessed by flow cytometry indicated that all tested bionanocomposites did not affect cell proliferation and maintained the normal growth rate of cells. The obtained results recommend the potential use of PLA-based bionanocomposites for biomedical coatings.
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Darder, Margarita, Jing He, Laurent Charlet, Eduardo Ruiz-Hitzky y Pilar Aranda. "Gentamicin-Montmorillonite Intercalation Compounds as an Active Component of Hydroxypropylmethylcellulose Bionanocomposite Films with Antimicrobial Properties". Clays and Clay Minerals 69, n.º 5 (octubre de 2021): 576–88. http://dx.doi.org/10.1007/s42860-021-00156-3.

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AbstractThe present study introduces an overview of gentamicin-clay mineral systems for applications in biomedicine and then focuses on the development of a series of gentamicin/clay hybrid materials to be used as the bioactive phase of hydroxypropylmethylcellulose (HPMC) to produce bionanocomposite membranes possessing antimicrobial activity of interest in wound-dressing applications. Gentamicin (Gt) was adsorbed from aqueous solutions into a montmorillonite (Cloisite®-Na+) to produce intercalation compounds with tunable content of the antibiotic. The hybrids were characterized by CHN chemical analysis, energy-dispersive X-ray analysis, X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis, confirming the intercalation of Gt by an ion-exchange mechanism. The release of Gt from the hybrids was tested in water and in buffer solution to check their stability. Hybrids with various amounts of Gt were incorporated into a HPMC matrix at various loadings and processed as films by the casting method. The resulting Gt-clay/HPMC bionanocomposites were characterized by means of field-emission scanning electron microscopy, and were also evaluated for their water-adsorption and mechanical properties to confirm their suitability for wound-dressing applications. The antimicrobial activity of the bionanocomposite films was tested in vitro toward various microorganisms (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium, Acinetobacter baumannii, and Klebsiella pneumonia), showing a complete bacterial reduction even in films with small Gt contents.
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Ahmadizadegan, Hashem y Sheida Esmaielzadeh. "Gas transport membranes based on novel optically active polyester/cellulose/ZnO bionanocomposite membranes". Journal of the Iranian Chemical Society 15, n.º 4 (26 de diciembre de 2017): 799–811. http://dx.doi.org/10.1007/s13738-017-1279-6.

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4

Ahmadizadegan, Hashem y Sheida Esmaielzadeh. "Preparation and application of novel bionanocomposite green membranes for gas separation". Polymer Bulletin 76, n.º 10 (24 de noviembre de 2018): 4903–27. http://dx.doi.org/10.1007/s00289-018-2621-6.

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Kushwaha, Omkar S., C. V. Avadhani y R. P. Singh. "Preparation and characterization of self-photostabilizing UV-durable bionanocomposite membranes for outdoor applications". Carbohydrate Polymers 123 (junio de 2015): 164–73. http://dx.doi.org/10.1016/j.carbpol.2014.12.062.

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6

Algar, Itxaso, Clara Garcia-Astrain, Alba Gonzalez, Loli Martin, Nagore Gabilondo, Aloña Retegi y Arantxa Eceiza. "Improved Permeability Properties for Bacterial Cellulose/Montmorillonite Hybrid Bionanocomposite Membranes by In-Situ Assembling". Journal of Renewable Materials 4, n.º 1 (13 de febrero de 2016): 57–65. http://dx.doi.org/10.7569/jrm.2015.634124.

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7

Zanella, Gabrielle Susan, Daniela Becker, Andrea Lima Santos Schneider, Ana Paula Testa Pezzin, Denise Abatti Kasper Silva y André Lourenço Nogueira. "PLLA–silver nanoparticles bionanocomposite membranes: Preparation, antibacterial activity, and in vitro hydrolytic degradation assessment". Journal of Applied Polymer Science 136, n.º 39 (22 de mayo de 2019): 47998. http://dx.doi.org/10.1002/app.47998.

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Das, Gautam, Bang Ju Park y Hyon Hee Yoon. "A bionanocomposite based on 1,4-diazabicyclo-[2.2.2]-octane cellulose nanofiber cross-linked-quaternary polysulfone as an anion conducting membrane". Journal of Materials Chemistry A 4, n.º 40 (2016): 15554–64. http://dx.doi.org/10.1039/c6ta05611c.

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9

Esmaielzadeh, Sheida y Hashem Ahmadizadegan. "Construction of proton exchange membranes under ultrasonic irradiation based on novel fluorine functionalizing sulfonated polybenzimidazole/cellulose/silica bionanocomposite". Ultrasonics Sonochemistry 41 (marzo de 2018): 641–50. http://dx.doi.org/10.1016/j.ultsonch.2017.10.029.

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10

Mouro, Cláudia, Raul Fangueiro y Isabel C. Gouveia. "Preparation and Characterization of Electrospun Double-layered Nanocomposites Membranes as a Carrier for Centella asiatica (L.)". Polymers 12, n.º 11 (11 de noviembre de 2020): 2653. http://dx.doi.org/10.3390/polym12112653.

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A wide range of naturally derived and synthetic biodegradable and biocompatible polymers are today regarded as promising materials for improving skin regeneration. Alongside this, these materials have been explored in conjunction with different types of antimicrobial and bioactive agents, especially natural-derived compounds, to enhance their biological properties. Herein, a double-layered nanocomposite dressing membrane was fabricated with two distinct layers. A bottom layer from Chitosan-Sodium tripolyphosphate (CS-TPP) and Poly(vinyl alcohol) (PVA) containing Centella asiatica (L.) (CA) was electrospun directly over a Polycaprolactone (PCL) layer to improve the biologic performance of the electrospun nanofibers. In turn, the PCL layer was designed to provide mechanical support to the damaged tissue. The results revealed that the produced double-layered nanocomposite membrane closely resembles the mechanical, porosity, and wettability features required for skin tissue engineering. On the other hand, the in vitro drug release profile of the PCL/PVA_CS-TPP containing CA exhibited a controlled release for 10 days. Moreover, the PVA_CS-TPP_CA’s bottom layer displayed the highest antibacterial activity against Staphylococcus aureus (S. aureus) (99.96 ± 6.04%) and Pseudomonas aeruginosa (P. aeruginosa) (99.94 ± 0.67%), which is responsible for avoiding bacterial penetration while endowing bioactive properties. Finally, the 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay showed that this nanocomposite membrane was not cytotoxic for normal human dermal fibroblasts (NHDF) cells. Therefore, these findings suggest the potential use of the double-layered PCL/PVA_CS-TPP_CA as an efficient bionanocomposite dressing material.
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Tesis sobre el tema "Bionanocomposite membranes"

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Wallet, Brett. "Structural investigation of silk fibroin-based membranes". Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51907.

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Silk fibroin has created a surge of interest for use as organic material due to its optical transparency, biocompatibility, biodegradability, and excellent physical properties. However, the implementation of silk films and structures into biomedical and sensing devices has been relatively low due to a lack of understanding of the mechanisms involved in such implementation. Increasing need for multifunctional high-performance organic materials has caused an emphasis on the ability of researchers to spatiotemporally pattern and control the structure and consequently functional properties of materials. Silk fibroin displays high potential for use as a controllable biomaterial that can be formed into a myriad of different structures for various applications. By implementation of an aqueous silk solution approach combining various fabrication techniques, several different pristine-silk and silk-composite membranes have been developed to investigate the importance of internal structuring. Different methods of investigation include: 1) incorporation of reinforcing nanoparticles within the silk matrix; 2) neutron reflectivity measurements of ultrathin silk films; 3) film patterning with nanoscale features followed by boundary organized surface mineralization of inorganic nanoparticles. The ultimate goal will be to provide fundamental data assisting in an increased knowledge of silk fibroin-based membranes and the effect of secondary structures on properties of interest.
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Singh, Surabhi. "Studies on the development of dextran based bionanocomposite membranes for wound care". Thesis, 2017. http://localhost:8080/xmlui/handle/12345678/7415.

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Capítulos de libros sobre el tema "Bionanocomposite membranes"

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Gupta, Piyush, Neha Rana, Subhakanta Dash, Namrata Gupta, Monika Singh y Sumit Kaushik. "Bionanocomposite Membranes and Adsorbents for Water and Wastewater Treatment". En Bionanotechnology Towards Sustainable Management of Environmental Pollution, 141–66. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003270959-6.

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2

Soo, D. J. W., M. H. B. Osni, P. Pasbakhsh, R. De Silva, P. Cumpson y K. L. Goh. "Micromechanical Characterization of Poly(Lactic Acid)/Halloysite Bionanocomposite Membrane". En Nanostructured Polymer Composites for Biomedical Applications, 53–67. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-816771-7.00003-x.

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