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487 results on '"Gorrasi, Giuliana"'

2. Design of Cellulose Acetate Electrospun Membranes Loaded with N-doped Carbon Quantum Dots for Water Remediation

Author

Viscusi, Gianluca, Mottola, Stefania, Tohamy, Hebat-Allah S., Gorrasi, Giuliana, De Marco, Iolanda, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Cui, Zhen-Dong, Series Editor, Lu, Xinzheng, Series Editor, Mannina, Giorgio, editor, and Ng, How Yong, editor

Published
2024
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13. Design of sodium alginate/soybean extract beads loaded with hemp hurd and halloysite as novel and sustainable systems for methylene blue adsorption

Author

Viscusi, Gianluca, Lamberti, Elena, and Gorrasi, Giuliana

Subjects
Gelation -- Methods -- Analysis, Methylene blue -- Analysis, Chemical processes -- Methods -- Analysis, Materia medica, Vegetable -- Identification and classification -- Properties, Halloysite -- Identification and classification -- Properties, Soybean -- Identification and classification -- Properties, Adsorption -- Analysis, Nanotubes -- Identification and classification -- Properties, Plant extracts -- Identification and classification -- Properties, Cannabis -- Identification and classification -- Properties, Engineering and manufacturing industries, Science and technology
Abstract

This work concerns the fabrication of a green, novel, and sustainable system for the efficient removal of methylene blue from aqueous solutions. The proposed system is obtained by using sodium alginate/soybean extract blend reinforced with hemp hurd from agro-waste resources and halloysite nanotubes (HNTs). The ionotropic gelation methodology, using calcium chloride as a crosslinking agent, was easily applied to obtain composite beads. The adsorption studies were carried out up to 24 h using methylene blue as model system. The effect of HNTs on adsorption capacity was investigated proving that an increase in inorganic filler determined an increase in adsorption capacity from 32 to 49 mg/g by adding 35% wt of HNTs. The experimental data were fitted through four different models, demonstrating that the adsorption phenomenon is described by second-order process. Film diffusion and pore diffusion values were evaluated to better investigate the rate controlling mechanisms. Isotherm studies were then carried out to extrapolate thermodynamic parameters. Finally, a possible mechanism of adsorption was proposed on the basis of chemisorption mechanism. Here, we demonstrate that the proposed novel, inexpensive, and sustainable composite material obtained from agro-waste resources has high efficiency in removing a cationic dye from wastewaters. KEYWORDS adsorption, biomaterials, methylene blue, polysaccharides, renewable resources, 1 | INTRODUCTION The wastewaters derived from textiles, food, papers, and many other industries are representing the main source of dye pollution. [1, 2] Due to their toxicity, dyestuffs are [...]

Published
2022
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17. A Spironolactone-Based Prototype of an Innovative Biomedical Patch for Wound Dressing Applications.

Author

Aquino, Giovanna, Viscusi, Gianluca, D'Alterio, Massimo Christian, Covelli, Verdiana, Gorrasi, Giuliana, Pellecchia, Claudio, Rizzo, Paola, D'Ursi, Anna Maria, Pepe, Giacomo, Amante, Chiara, Del Gaudio, Pasquale, and Rodriquez, Manuela

Subjects
TOPICAL drug administration, DRUG delivery systems, GANODERMA lucidum, TISSUE scaffolds, DRUG carriers
Abstract

The electrospinning process is an effective technique for creating micro- and nanofibers from synthetic and natural polymers, with significant potential for biomedical applications and drug delivery systems due to their high drug-loading capacity, large surface area, and tunable release times. Poly(L-lactic acid) (PLLA) stands out for its excellent thermo-mechanical properties, biodegradability, and bioabsorbability. Electrospun PLLA nanofibrous structures have been extensively investigated as wound dressings, sutures, drug delivery carriers, and tissue engineering scaffolds. This study aims to create and characterize electrospun PLLA membranes loaded with spironolactone (SP), mimicking active compounds of Ganoderma lucidum (GL), to develop a biodegradable patch for topical wound-healing applications. GL, a medicinal mushroom, enhances dermal wound healing with its bioactive compounds, such as polysaccharides and ganoderic acids. Focusing on GL extracts—obtained through green extraction methods—and innovative drug delivery, we created new fibers for wound-healing potential applications. To integrate complex mixtures of bioactive compounds into the fibers, we developed a prototype using a single pure substance representing the extract mixture. This painstaking work presents the results of the fabricating, wetting, moisture properties, material resilience, and full characterization of the product, providing a robust rationale for the fabrication of fibers imbued with more complex extracts. [ABSTRACT FROM AUTHOR]

Published
2024
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22. Controlling Drug Release of Anti-inflammatory Molecules Through a pH-Sensitive, Bactericidal Polymer Matrix: Towards a Synergic and Combined Therapy

Author

Izzo, Lorella, Gorrasi, Giuliana, Sorrentino, Andrea, Tagliabue, Andrea, Mella, Massimo, Lovell, Nigel H., Advisory Editor, Oneto, Luca, Advisory Editor, Piotto, Stefano, Advisory Editor, Samsonovich, Alexei V., Advisory Editor, Babiloni, Fabio, Advisory Editor, Liwo, Adam, Advisory Editor, Magjarevic, Ratko, Advisory Editor, Concilio, Simona, editor, Sessa, Lucia, editor, and Rossi, Federico, editor

Published
2020
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30. Hydrolysis and Biodegradation of Poly(lactic acid)

Author

Gorrasi, Giuliana, Pantani, Roberto, Abe, Akihiro, Series editor, Albertsson, Ann-Christine, Series editor, Coates, Geoffrey W, Series editor, Genzer, Jan, Series editor, Kobayashi, Shiro, Series editor, Lee, Kwang-Sup, Series editor, Leibler, Ludwik, Series editor, Long, Timothy E., Series editor, Möller, Martin, Series editor, Okay, Oguz, Series editor, Percec, Virgil, Series editor, Tang, Ben Zhong, Series editor, Terentjev, Eugene M., Series editor, Theato, Patrick, Series editor, Vicent, Maria J., Series editor, Voit, Brigitte, Series editor, Wiesner, Ulrich, Series editor, Zhang, Xi, Series editor, Di Lorenzo, Maria Laura, editor, and Androsch, René, editor

Published
2018
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35. List of contributors

Author

Abellán, Gonzalo, primary, Azimi, Faezeh, additional, Behranvand, Vajiheh, additional, Benício, Luíz Paulo Figueredo, additional, Botan, Rodrigo, additional, Bourgeat-Lami, E., additional, Carrasco, Jose A., additional, Coronado, Eugenio, additional, Daniel, Saju, additional, de Bona Sartor, Sabrina, additional, Gao, Yanshan, additional, Gorrasi, Giuliana, additional, Hajibeygi, Mohsen, additional, Huang, Yaping, additional, Joseph, Kuruvilla, additional, Kalarikkal, Nandakumar, additional, Khadem, Elham, additional, Khodadadzadeh, Leila, additional, Lu, Jun, additional, Mallakpour, Shadpour, additional, Motirasoul, Forough, additional, O’Hare, Dermot, additional, Pinto, Frederico Garcia, additional, Prevot, V., additional, Qiu, Lei, additional, Raeisi, Ahmad, additional, Rashidimoghadam, Shima, additional, Saritha, Appukuttan, additional, Shabanian, Meisam, additional, Sohail, Harrone Muhammad, additional, Sorrentino, Andrea, additional, Srivastava, Suneel Kumar, additional, Tabebordbar, Hashem, additional, Tabesh, Farbod, additional, Thomas, Sabu, additional, Tronto, Jairo, additional, Vijayamma, Raji, additional, and Wang, Qiang, additional

Published
2020
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44. Polymer Nanocomposites

Author

Gorrasi, Giuliana

Abstract

In the last decades, nanoscience and nanotechnologies have offered new opportunities for producing materials with structural and functional properties. The possibility to manipulate the matter, on an atomic or molecular level, can allow the obtainment of structures having unique characteristics and completely new functionalities. The use of structural and functional nanoparticles to be added to polymer nanocomposites is a nice way to manipulate the matter’s properties following a bottom-up approach. The hybrid fillers can be used, not only as for structural purposes, but also as functional nano-structures in many fields, such as microelectronics, packaging, drug delivery, flame retardant materials, and environmental issues. A number of interesting nanoparticles, such as clays (lamellar or tubular), silica, carbon nanotubes, siloxanes, and, more recently, graphenes, have emerged as peculiar nanofillers for enhancing the performance of polymer matrices for a wide variety of technological applications. The present chapter aims to present the last research and novelty in the field of polymeric nanocomposites’ materials. Methods of productions, as well as polymers and type and shape of the fillers and their functionalities are widely reported. Structural organization and physical properties of the polymer matrix are correlated with the nature of filler.

Published
2018

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