20^th International Conference and Exhibition on Materials Science and Chemistry April 25-26, 2022 Barcelona, Spain

Biography:

Loredana Preda is senior researcher at Romanian Academy, Institute of Physical Chemistry ‘‘Ilie Murgulescu’’, Romania. Her research interests lie in different fields of great importance for society like electrocatalysis, supercapacitors and photo-electrochemistry. She has expertise in fabrication of hybrid materials with outstanding features which find applications in different areas of great interest like supercapacitors and fuel cells. The characterization of these active materials (e.g. electrochemical characterization) as well as their performance assessment (e.g. their capacitive performance or their catalytic performance for ethanol/methanol oxidation) is her competence. Her research work is also related to improving bioactivity and biocompatibility of some new alloys (e.g. Ti-4Al-6V-SLM) for dental and orthopaedic applications

 

Abstract:

Fuel cells and supercapacitor applications could much contribute to meeting the tremendous energy demand of modern society, as they represent appropriate alternatives for electricity generation and storage. In the present work, the performances of new WO3-decorated electrodes for supercapacitor applications were assessed. Tungsten oxide was electrochemically deposited on graphite supports (G), functionalized with either reduced graphene oxide (WO3/rGO/G) or carbon nanowalls (WO3/CNW/G). The electrochemical tests demonstrated that the presence of carbon nanowalls significantly enhances the capacitive performances of these new WO3-based electrodes (the capacitance of WO3/CNW/G, appraised from galvanostatic charge-discharge experiments, was ca. 351 mF/cm2 at an applied current density of 1 mA /cm2 ), whereas the presence of graphene leads to a less significant increase of capacitive performance (the capacitance of WO3/rGO/G was ca. 71 mF/cm2 at an applied current density of 1 mA /cm2 ). Based on these observations and on the SEM results (Fig.1), one may assert that the presence of CNW provides mainly better electrical conductivity and enhanced double layer capacitance of the electrode material, mainly due to the morphology adopted by CNW on graphite. Additionally, in view of fuel cells applications, the electrocatalytic activity towards methanol oxidation of these new Pt-decorated electrodes was herein assessed. Platinum nanoparticles were electrochemically deposited on a conductive substrate, functionalized either simply with graphene, (Pt/GR) or with graphene modified with boron-doped diamond powder (Pt/GR-BDDP). The electrochemical tests pointed out that the presence of boron-doped diamond powder (BDDP) into the graphene facilitates the overall methanol oxidation process and provides a better resistance to fouling via CO-poisoning of the electrocatalyst. Additional investigations revealed that the inclusion of BDDP allows a better exposure of the edge planes of the graphene platelets which enables a better accessibility of Pt particles to species from the solution.

 

Biography:

Amr  Fawzy is expertise in many field, innovator, book author and has 24 years experiences in healthcare sector. He has anapplication in Nobel 2022. Setting many applied theory regarding the way that pyramids was arise, has copyright for more than 20books on Amazon, expertise in physics and life science.  

 

Abstract:

The energy dynamics and all based science is focus mainly on one or two ways to understand the energy dynamics, but if we look to the universe which is the real yard of understanding the energy of molecules and molecules transformation , we will finds missed factor in the balance and dynamism of such different powers to stabilize and making balance in the level of any material stability , this research door is new Hypothesis  and theory to start the real understanding for the universe basic material and core material dynamism.The active material which changes the charge of any other material and lead it to change in its atomic balance to perform certain dynamics and the reaction will depend on the speed of the energy particles carrier whatever its electrons, quark, or others which is proposed particle XParticle x is new proposition of energy particles yielded under condition from the cold dark materials between galaxies , and they able to exchange energy between other Universe  materials to settle the balance and new elements formation  

 

 

 

 

 

Biography:

Bozena Tyliszczak has an expertise in developing various biomaterials designed for biomedical purposes. The research topics she undertakes cover such scientific areas as materials engineering and nanotechnology. Her main attention is focused on the development of innovative controlled drug delivery systems such as wound dressing materials accelerating wound healing processes, and enabling targeted delivery of active substance directly to the affected site. Targeted delivery is particularly significant in the case of anticancer therapy where conventional drug application may cause various side effects and, importantly, reduce the effectiveness of treatment

Abstract:

Statement of the Problem: Along with the constantly observed civilization development, the medical conditions known also as the 21st century diseases are becoming a growing problem. Among these conditions, the skeletal system diseases constitute particularly significant aspect. Thus it is very important to perform investigations on the development of new, innovative bioactive biomaterials which may support bone defect treatment and favor bone tissue regeneration. Methodology & Theoretical Orientation: The main base of the developed biomaterial is a polymer matrix showing excellent mechanical properties giving at the same time appropriate elasticity. As a bioactive component, hydroxyapatite has been used to provide adequate osteointegration of the final material. Moreover, a bovine collagen has also been used. This protein was selected due to its high biological significance and biocompatibility which, in turn, result in supporting cell adhesion and proliferation by collagen modified composite.

Findings: Based on the spectroscopic analysis performed, the occurrence of the absorption bands characteristic for applied modifying agent, i.e. collagen, has been verified. Furthermore, it was demonstrated that all analyzed composite materials were characterized by sorption capability in simulated physiological liquids. Next, during the incubation of tested composites in simulated physiological liquids, i.e. during 14-day period, any rapid changes in pH values of incubation media have not been observed. All composite materials were characterized by similar surface roughness which was a result of the presence of the ceramic phase (i.e. hydroxyapatite) in all tested materials.

Conclusion & Significance: Due to such advantages of developed polymer-ceramic composite materials modified additionally with collagen as their simple and quick synthesis, biological and physicochemical properties as well as the possibility of the preparation of their sizes and shapes depending on the applied reaction vessel it may be concluded that developed biomaterials exhibited a great application potential and should be investigated using more advanced experiments. Acknowledgements: The „Multifunctional biologically active composites for applications in bone regenerative medicine” project is carried out within the TEAM-NET programme of the Foundation for Polish Science financed by the European Union under the European Regional Development Fund.

 

Biography:

Agnieszka Sobczak-Kupiec undertakes interdisciplinary research activities at the interface of materials engineering, chemical technology and nanotechnology. Her scientific interests are related to biomaterials based on calcium phosphates for bone tissue reconstruction and dental applications, as well as nanomaterials for medical applications

Abstract:

Nowadays, the majority of organ and tissue damage resulting from genetic defects or trauma is treated either pharmacologically or surgically. This is accomplished by using appropriate drugs or, in more severe cases, organ transplantation. However, for some time now, great emphasis has been placed on biomaterials, intelligent bioactive materials that have great potential in regenerative medicine by stimulating surrounding tissues or local drug delivery.Materials and tissue engineering provide opportunities to develop such smart materials. Hydroxyapatite (HA) is most commonly used for bone regeneration due to its impressive bioactivity, osteconductive properties, and ability to bond to natural bone tissue. By suspending it in a polymer matrix, it is possible to obtain a composite with specific parameters. In addition, the polymeric structure, offers incredible possibilities for modification with biomolecules or drugs. Thus, such materials can be used as a carrier of active substances for local drug delivery. In the present study, polyvinylpyrrolidone (PVP) was the polymer phase. It is an essential, water-soluble polymer approved by the US Food and Drug Administration (FDA) as safe for body contact. The mineral phase constituted HA. A innovative composite was prepared and subjected to detailed physicochemical analysis. Additionally, the system was modified with the clindamycin, which increased its biological value. The drug release kinetics in the simulated body fluid and the effect of ceramics on this parameter were determined.

Acknowledgements: The „Multifunctional biologically active composites for applications in bone regenerative medicine” project is carried out within the TEAM-NET programme of the Foundation for Polish Science financed by the European Union under the European Regional Development Fund.

 

 

 

Biography:

Karina PiÄ™tak is a Ph.D student in the Department of Materials Engineering, Faculty of Materials Engineering and Physics, Cracow University of Technology. She conducts interdisciplinary research activities at the interface of materials engineering, chemical engineering, and nanotechnology. Her scientific interests include biomaterials such as composites for bone tissue reconstruction and dental applications.  

Abstract:

Over the last few years, biomaterials have become increasingly important in materials science, with great hopes of solving problems in tissue and organ healing.  Bioactive materials based on polymers, ceramics, and active substances are being designed to provide great potential for individual modification according to the patient's needs. By combining different types of materials and modifications, composites are created that enable cell proliferation and tissue growth. Some plant extracts are high in terpenes, polyphenols, and flavonoids, which show potential anticancer, anti-diabetic, and anti-inflammatory effects. Furthermore, numerous studies indicate osteoblast differentiation and bone formation under the influence of flavonoid compounds. The present study focused on the development of a methodology for the preparation of photocrosslinked polymer-ceramic composites based on polyvinylpyrrolidone (PVP), gelatin (GE), sodium alginate (SA), while the ceramic phase was synthetic hydroxyapatite (HA). In addition, the obtained system was enriched with an aqueous extract of sage (Salvia officinalis). To determine the kinetics of polyphenol release from the matrices, the obtained composites were incubated in water in a pharmaceutical system under continuous stirring conditions at 36.6°C. The antioxidant properties of the aqueous plant extract were determined by 1,1-diphenyl-1-picrylhydrazyl (DPPH) radical and the total content of phenolic compounds was determined by the Folin-Ciocalteau (F-C) colorimetric method. Polyphenolic compounds were released from the polymer-ceramic composites during 21 days of incubation. Moreover, the amount of the released compounds also depends on the composition of the chosen composition. Conclusion & Significance: The obtained polymer-ceramic composites can be a carrier of active substances. Moreover, these new-generation systems for controlled drug release have potential applications in bone regeneration medicine.

Biography:

Dagmara SÅ‚ota is a PhD student at the Doctoral School of the Cracow University of Technology, Faculty of Materials Engineering and Physics. In her research she concerns with bioactive ceramic-polymer composites and coatings as carriers of active substances, which may find application in regenerative medicine of the skeletal system and tissue engineering

 

Abstract:

A key feature of medical devices, including implants, is their multifunctionality to ensure effective and long-lasting functionality. One solution that can ensure this is coating of implants, thus creating specific layers of biomaterial. Implant coating is one of the strategies used to increase biocompatibility as well as provide additional functions without changing the base material. In the case of materials developed for bone regeneration, hydroxyapatite (HA) coating can be used to add the desired osteointegration feature.HA belongs to calcium phosphate ceramics, which are characterized by impressive biocompatibility and bioactivity. It also exhibits the ability to bond with natural tissue, which significantly eliminates the danger of implant loosening. Due to its structure, it can be modified with selected ions (e.g. Sr or Zn) to adduce additional antibacterial properties, or other active substances. Unfortunately, HA itself has low mechanical strength and high brittleness which limits its application. A solution to this problem may be to suspend HA in a polymer matrix to provide flexibility. The polymer phase is able to transfer stress while the resulting composite will not lose its bioactive properties given by the nature of HA.In the present study, innovative ceramic-polymer composite coatings based on polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) containing glutathione and collagen for bone tissue regeneration were developed. The materials were subjected to tribological and physicochemical analysis, as well as incubation studies to determine their properties and potential for use as a carrier for the active substance. Moreover, the developed biomaterials have great potential due to the high biological value of the components used in their synthesis, which promote osteogenesis.

Acknowledgements: The „Multifunctional biologically active composites for applications in bone regenerative medicine” project is carried out within the TEAM-NET programme of the Foundation for Polish Science financed by the European Union under the European Regional Development Fund.