Day 3 :
- Track 2: Polymer Material Science and Engineering
Track 7: Composite polymeric materials
Chair
Mahdi Saud Alajmi
Public Authority for Applied Education and Training, Kuwait
Session Introduction
Mahdi Alajmi
Public Authority for Applied Education and Training, Kuwait
Title: Mechanical and Nanoindentation studies on Nano-layered silicate reinforced recycled Glass-filled polyamide 12 nanocomposites
Time : 10:00-10:25
Biography:
Mahdi Alajmi has completed his PhD at the age of 35 years from Brunel University in London - School of Design and Engineering. He is the Head of Manufacturing Engineering Technology at College of Technological Studies at PAAET. He has published more than 10 papers in reputed journals and has been serving as an editorial board member of The International Conference of Manufacturing Engineering and Process (ICMEP).
Abstract:
Recently, recycling of thermoplastic polymers have become an alternative resource in industrial product manufacturing processes. This work is an attempt to enhance the mechanical and nanoindentation behaviours of Recycled Glass-Filled Polyamide-12 (RGP) by adding Nano-layered Silicate (Nanoclay) as a reinforced filler. Tensile and nanoindentation tests were conducted to study the effect of various loading levels (0-7 wt.%) of nano-layered silicate on the mechanical and nanoindentation behaviors of RGP and its nanocomposites . The Recycled Glass-Filled Polyamide-12 (RGP) and Recycled Glass-Filled Polyamide-12 reinforced with layered Silicate (RGPS) were prepared using a single screw injection moulding technique. The wide Angle X-ray Diffraction (WAXD) was used to characterize the nanostructure of material and determine the intercalation /exfoliation for layered silicate in RGP matrix. This study has revealed that the layer silicate has a negative effect on the tensile strength and strain (ductility) of RGPS compared with RGP. Moreover, RGFS/5 wt.% displayed the lowest tensile strength and strain values, with an average decrease of 54% compared with the RGP sample. However, Nanoindentation results showed a remarkable improvement with addition of layered silicate to RGF. The average decrease in the max depth of penetration was 21%, while the average increase in the hardness was 92% for RGPS samples compared with RGP samples. The RGPS/3wt.% sample shows the optimum results in both resistance penetration and hardness of nanocomposites 1100 nm and 0.24 GPa, respectively.
Salvatore Graziani
University of Catania, Italy
Title: Towards the realization of post-silicon smart systems: IPMC based sensors
Time : 10:25-10:50
Biography:
Salvatore Graziani received the M.S. degree in Electronic engineering and the Ph.D. degree in Electrical engineering from the Università degli Studi di Catania, Italy, in 1990 and 1994, respectively. Since 1990, he has been with the Dipartimento di Ingegneria Elettrica, Elettronica e Informatica, University of Catania, where he is an Associate Professor of Electric and Electronic Measurement and Instrumentation. His primary research interests lie in the field of polymerics sensors and actuators, signal processing, multisensor data fusion, neural networks, and software sensors, and smart sensors. He has coauthored many scientific papers and two books
Abstract:
In next future, smart systems will be developed, capable of solving tasks in strategic fields such as bio inspired robotics, aerospace, and medicine, just to mention a few. These systems will be required to embed a number of functions including, electric power generation and storage, signal sensing and processing, and actuating capabilities. Also, their miniaturization and biocompatibility, will be of interest. "More than Moore" solutions will complement silicon based devices with new technologies. Polymeric materials are suitable for energy scavenging, for the realization of organic electronic devices, and for obtaining reversible energy transduction. Ionic Polymer-Metal Composites (IPMCs) are nanocomposited materials, with electromechanical transduction capabilities, relevant to the realization of post-silicon smart systems, since they have sensing, power harvesting and acting capabilities. The presentation will focus on IPMCs as a valuable technology towards the realization of sensing functionalities. More specifically, IPMCs as generating sensors, cantilevered vibrating sensors, and smart coupled actuating-sensing elements will be described. The possibility to exploit such sensing principles for the realization of sensing systems in fields such as fluids rheological properties measurements and medicine applications will also be shown. Finally, it will be shown how the research activity on IPMC sensors is a multidisciplinary task. IPMC are quite new materials and many efforts are still required before they can become a mature technology. To this aim attention will be given to the challenges imposed, by the envisaged applications, on production technologies and system modeling
Rahmatollah Rahimi
Iran Universty of Science and Technology, Iran
Title: Preparation of a photoactive 3D polymer pillared with metalloporphyrin
Time : 10:50-11:15
Biography:
Rahmatollah Rahimi has completed his PhD from Howard University in Inorganic Chemistry. He was the Dean of Chemistry department at Iran University of Science and Technology from 2010 to 2014. He was Supervisor of Iranian Chemistry Olympiad team in Italy with Commission of Education Ministry in 1992. He has published more than 120 papers in reputed journals and more than 200 article in several conferences.
Abstract:
Among the very few efforts for the preparation of stable pillared graphene nanostructures, there is no report of tin porphyrin intercalated between TiO2–graphene (TG) nanosheets. Graphenes and other natural sheets, because of their longrange order, are often referred to as two-dimensional (2D) crystals. Chemists, who tend to think of compounds and covalent bonds, may instead look at them as 2D macromolecules or 2D polymers. Defect-free graphene has an infinite number of repetitive elements, with the smallest being any of its sp2-hybridized carbon atoms, whose one p orbital and three sp2 orbitals are filled with one electron each. These carbon atoms correspond to the smallest repetitive chain segments representing the repeating units of common linear polymers. In this work, we intercalated a tin complex of tetrakis (4-carboxyphenyl)porphyrin (SnTCPP.Cl2) between TiO2–graphene nanosheets (TGSP) with 3% graphene content (TG (3%)). The principal objective of the present research is to prepare an efficient visible-light photoactive compound to significantly use visible light in the photocatalysis system. The photoelectrochemical investigations determined that the tin porphyrin photosensitizer effectively produces more charge carriers within the pillared nanostructure to enhance light induced current. Thus, the pillared graphene nanostructure of TGSP can efficiently enhance the photocurrent generation of the modified electrode undergoing visible light irradiation.
Networking & Refreshments Break: 11:15-11:35
Omer F Ozturk
Canakkale Onsekiz Mart University, Turkey
Title: Co, Ni and Cu metal nanoparticle containing cationic p(MTMA) microgel composites as catalyst for H2 generation and nitro compound reductions
Time : 11:35-12:00
Biography:
Omer Faruk Ozturk has completed his PhD at the age of 32 years from Hacettepe University and did one year postdoctoral studies from Florida University. He has published more than 19 papers in reputed journals and has been serving as an editorial board member of repute.
Abstract:
A microgel from [2-(Methacryloyloxy)ethyl]trimethylammonium chloride ([MTMA]Cl) as p(MTMA) was synthesized by inverse suspension polymerization technique and used as template for in situ Co, Ni, and Cu metal nanoparticles preparation. The corresponding metal salts were loaded into p(MTMA) microgels from their corresponding metal salt solution in ethanol, then these metal salt loaded p(MTMA) microgels were treated with NaBH4 in order to obtain p(MTMA)-M (M: Co, Ni, and Cu) composites. The characterizations of p(MTMA) microgels were carried out via FT-IR, TGA, SEM, optical microscope, and zeta potential measurements. Finally, the prepared p(MTMA-M composites were used as catalyst in hydrogen generation from the hydrolysis of NaBH4 and in the reduction of nitro compounds. There are various parameters affecting the catalytic performances of p(MTMA)-M in H2 production from the hydrolysis reaction such as, the type of metal nanoparticles, their amounts and reaction temperature were investigated. Also, aromatic nitro compound such as 4-nitrophenol (4-NP), 2-nitrophenol (2-NP) reductions by p(MTMA)-M composites were investigated
Rahmatollah Rahimi
Iran Universty of Science and Technology, Iran
Title: Photocatalytic properties of TiO2-Graphene nanocomposite as a 2D polymer photosensitized with porphyrin
Time : 12:00-12:25
Biography:
Rahmatollah Rahimi has completed his PhD from Howard University in Inorganic Chemistry. He was the Dean of Chemistry department at Iran University of Science and Technology from 2010 to 2014. He was Supervisor of Iranian Chemistry Olympiad team in Italy with Commission of Education Ministry in 1992. He has published more than 120 papers in reputed journals and more than 200 article in several conferences.
Abstract:
To use the visible light in photodegradation reactions efficiently, graphene–TiO2 nanocomposite (TG-3%) was photosensitized using tetrakis (4-carboxyphenyl) porphyrin. To investigate the effect of graphene as well as dye sensitization on the photoactivity of the synthesized photocatalyst, photocatalytic properties and photocurrent responses of the prepared samples were examined under visible light irradiation. Defect-free graphene has an infinite number of repetitive elements, with the smallest being any of its sp2-hybridized carbon atoms, whose one p orbital and three sp2 orbitals are filled with one electron each. These carbon atoms correspond to the smallest repetitive chain segments representing the repeating units of common linear polymers. The 1.6-fold increase of the photocurrent response in the graphene–TiO2 nanocomposite photosensitized using porphyrin (TGP) compared to the graphene–TiO2 nanocomposite provides an evidence for the effective influence of the porphyrin photosensitizer in the enhancement of the visible light photoactivity. The porphyrin photosensitizer in the TGP photocatalyst can enhance visible light absorption due to its ability to capture a broad range of the solar spectrum. Thus, porphyrin acts as a light-harvesting agent and is capable of producing photoinduced electrons and holes. Therefore, the largest shift in the visible light range was observed for the TG-3% nanocomposite photosensitized with porphyrin
Milena Kurkowska
Warsaw University of Technology, Poland
Title: Effect of surface modification of multiwall carbon nanotubes on the electrical properties of the polymer composite epoxy/CNT.
Time : 12:25-12:45
Biography:
Milena Kurkowska has completed her Master degree at the age of 25 at the Warsaw University of Technology at the Faculty of Chemistry, next she has started her doctoral studies at the Faculty of Materials Science and Engineering. BSc and Master’s Thesis were associated with the electroless deposition of composite layers of Ni-P and Ni-P-oxide (silicon, aluminum and titanium oxide) on substrates such as PET and carbon fibers. During her studies she worked at Reckitt Benckiser (manufacturer and marketer of branded health, hygiene and home products) in the Quality Department
Abstract:
The composites made form epoxy resin as a matrix with carbon nanotubes as a filler are used in many industries, particularly in the aerospace industry. The selection of the epoxy as matrix is associated with the commercial availability of a wide range of resins with varying viscosities and mechanical properties. The use of CNTs as a filler improves electrical conductivity and mechanical properties. The single wall carbon nanotubes have the best electrical properties. Unfortunately, due to their high prices and low availability we decided to use the multi wall carbon nanotubes (MWCNT) as a filler. The interaction between the tubes in MWCNTs, surface defects and contamination after the production process (CCVD) leads to the reduction of electrical conductivity. MWCNTs were surface modified in order to improve their electrical conductivity. Nanotubes were decorated with a coating of Ni-P by the application of electroless deposition. Homogenization of the solution was ensured by the use of an ultrasonic cleaner and disintegrator. Calander was used to homogenize the mixture of the epoxy resin and the filler. Finally, in order to examine the electrical conductivity a Keithley 6221/2182 nanovoltometer was used. A method of surface preparation is important for the quality of the deposited coating. Initial purification of carbon nanotubes, suitable homogenization and uniform sensitization and activation are important steps during the preparation of the substrate. Homogenization of the epoxy resin with carbon nanotubes using a calendar provides a good dispersion of the nanofiller in the matrix. The addition of carbon nanotubes significantly improves electrical conductivity. Reducing the length of the CNTs results in deterioration of electric conductivity in relation to the raw CNTs
Panel Discussion
Lunch Break & Closing Ceremony 12:45-13:45
Dong Min Kim
Hongik University, Republic of Korea
Title: The Catalytic Activity of Cathode with Sputtered Cobalt with Graphene Oxide on Carbon Paper
Biography:
Dong Min Kim has completed his PhD in 2004 from University of Wisiconsin-Madison and postdoctoral studies from University of Wisconsin-Madison Department of Materials Science and Engineering in. He is the professor at the the Department of Materials Science and Engineering in Hongik University South Korea. He has published more than 50 papers in reputed journals and has been studied in Solar cells and Fuel cell in renewabel energy area.
Abstract:
Many efforts have been focused on the development of high-energy-density power source to power ever-increasing demand of portable devices. Polymer electrolyte membrane fuel cells (PEMFC) are efficient and clean electrochemical power devices that have the potential for applications in energy conversion and storage. The PEMFC can be operated at a low temperature about 80ËšC and can be applied mobile electric source such as Laptop, Motor vehicles, etc. After the invention of fuel cell by Sir Grove in 1839, Pt-based catalysts were used as the most common electrode materials for the oxygen-reduction reaction (ORR). However, its deficiency and high price drive to develop new non–precious metal catalysts which are potentially less expensive and more abundant. In 1964, Jasinski observed catalytic activity of cobalt phthalocyanine to the ORR. Many methods have been tried to create practical non-precious metal catalysts (NPMCs). Many studies have shown that the reaction of the nitrogen atoms and non-precious transition metals into nano carbon materials can improve the electrocatalytic performance. Commonly, nitrogen-doped carbon materials can be fabricated by two methods: (i) directly doping during the synthesis of carbon materials and (ii) post-treatment of the as prepared carbon materials with nitrogen precursor. Especially, nitrogen and transition metal containing carbon composites fabricated via pyrolysis of precursors containing metal salts, nitrogen, and macrocyclic compounds have been demonstrated to be active in catalyzing ORR. Transition metals such as Co and Fe to improve the performance will require a robust method for increasing the reactivity of the metal ion through ligation. In this study, we sprayed graphene on carbon paper (CP) by spray method. A Cobalt (Co)-based electrocatalysts were fabricated by sputter deposition on graphene oxide layered carbon paper (GO/CP) and heat treatment in an ammonia (NH3) environment. The fabricated Co/N/Go/CP was investigated as an electrocatalyst for oxygen reduction reaction (ORR) in PEMFC by cyclic voltammetry (CV) and electrochemical Impedance spectroscopy (EIS).