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New materials based on metal complexes of bis(arylimino)isoindoline
Title
New materials based on metal complexes of bis(arylimino)isoindoline.
Creator
Rosenberg, Jay Merlin., Florida Atlantic University, Baird, Donald M.
Abstract/Description
Molecular architecture has been used to develop new materials with our knowledge of Bis(arylimino)isoindoline (BAII). Ni(BAII)2,\ Ni(NBAII)2 and Cu(NBAII)(OAc) complexes were prepared and studied using their Crystal packing diagrams and data in order to evaluate $\pi$-overlapping. It is believed that $\pi$-overlapping will occur in complexes with mono BAII substituted complexes and not di-substituted. The first steps have been made in the development of a polymeric BAII complex with the...
Show moreMolecular architecture has been used to develop new materials with our knowledge of Bis(arylimino)isoindoline (BAII). Ni(BAII)2,\ Ni(NBAII)2 and Cu(NBAII)(OAc) complexes were prepared and studied using their Crystal packing diagrams and data in order to evaluate $\pi$-overlapping. It is believed that $\pi$-overlapping will occur in complexes with mono BAII substituted complexes and not di-substituted. The first steps have been made in the development of a polymeric BAII complex with the production of an oligomeric BAII (GBAII). The GBAII complex was analysis using a molecular device approach with the use of NMR instrumentation.
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Date Issued
1998
PURL
http://purl.flvc.org/fcla/dt/15553
Subject Headings
Polymers, Materials, Chemistry, Ligands
Format
Document (PDF)
Determination and evaluation of electrical properties of metal-containing condensation polymers
Title
Determination and evaluation of electrical properties of metal-containing condensation polymers.
Creator
Battin, Amitabh J., Charles E. Schmidt College of Science, Department of Chemistry and Biochemistry
Abstract/Description
Doped electrically conductive polymers are one of the critical materials that have allowed the current technological revolution. Essentially all of today's applications of doped conductive polymers involve vinyl-related polymers. While the application of conductive polymers is rapidly increasing, there is need for additional materials with different electrical behaviors. The current focus is on studying condensation polymers that contain a metal atom and the possibility of undergoing entire...
Show moreDoped electrically conductive polymers are one of the critical materials that have allowed the current technological revolution. Essentially all of today's applications of doped conductive polymers involve vinyl-related polymers. While the application of conductive polymers is rapidly increasing, there is need for additional materials with different electrical behaviors. The current focus is on studying condensation polymers that contain a metal atom and the possibility of undergoing entire chain delocalization of electrons. The different series of organometallic condensation polymers were synthesized by employing interfacial polycondensation technique and characterization of these products were carried out using standard techniques like light scattering photometer, fourier transform infrared spectroscopy (FTIR), matrix assisted laser desorption ionization time of flight mass spectroscopy (MALDI TOF MS) and nuclear magnetic resonance spectroscopy (NMR). The electrical measurements were carried out employing Genrad 1650-B impedance spectroscopy. Prior studies conducted in this area have led to the pathway of looking at two aspects; first, surveying 60 metal-containing polymers that can undergo entire chain delocalization studying the effect of different substituents on their electrical properties and secondly, doping selected candidates employing iodine. The products derived from 2-nitro-1,4-phenylenediamine and N-methyl-1,4- pheneylenediamines with titanocene dichloride exhibited about 10 3 to 10 5 fold magnitude increases in the electrical conductivity on doping with iodine, moving it near conductive region. This increase is dependent on the concentration of the iodine and is cyclic. The results support the starting premise that selected metal-containing condensation polymers can be doped to increase their electrical conductivity., Further investigation is warranted to see if metal-containing condensation polymers can be important materials in the electronic industry. This research sets the stage for studying not only metal-containing polymeric materials but also to investigate the ability to increase the conductivity of other condensation polymers such as nylons and polyesters through doping.
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Date Issued
2009
PURL
http://purl.flvc.org/FAU/216415
Subject Headings
Polycondensation, Condensation products (Chemistry), Polymers and polymerization, Polymers, Electric properties
Format
Document (PDF)
NANOPARTICLE-INDUCED CATALYTIC CARBON CAPTURE: A MICROFLUIDICS APPROACH
Title
NANOPARTICLE-INDUCED CATALYTIC CARBON CAPTURE: A MICROFLUIDICS APPROACH.
Creator
Donjuan, Joshua, Kim, Myeongsub, Florida Atlantic University, Department of Ocean and Mechanical Engineering, College of Engineering and Computer Science
Abstract/Description
Due to technological advancement, energy consumption and demand have been increasing significantly, primarily satisfied by fossil fuel consumption. This reliance on fossil fuels results in substantial greenhouse gas emissions, with CO₂ being the most prominent contributor to global warming. To mitigate this issue and prevent CO₂ emissions, Carbon Capture, Utilization, and Storage (CCUS) technologies are employed. Among these, the amine scrubbing method is widely used due to its high CO2...
Show moreDue to technological advancement, energy consumption and demand have been increasing significantly, primarily satisfied by fossil fuel consumption. This reliance on fossil fuels results in substantial greenhouse gas emissions, with CO₂ being the most prominent contributor to global warming. To mitigate this issue and prevent CO₂ emissions, Carbon Capture, Utilization, and Storage (CCUS) technologies are employed. Among these, the amine scrubbing method is widely used due to its high CO2 capture efficiency and regenerative ability. However, this method has drawbacks, including high toxicity, corrosion, and substantial freshwater consumption. To develop an environmentally sustainable carbon capture solution, researchers are exploring alternatives such as the use of seawater and enhanced CO2 capture with catalysts. In this study, we analyze the catalytic performance of nickel nanoparticles (NiNPs) in seawater with carboxymethyl cellulose (CMC) polymers. Using flow-focusing geometry-based microfluidic channels, we investigated CO₂ dissolution at various concentrations of nanoparticles and CMC polymers. The objective is to optimize the concentration of nanoparticles and CMC polymers for effective CO₂ dissolution. We utilized NiNPs with diameters of 100 nm and 300 nm in CMC concentrations of 100 ml/L, 200 ml/L, and 300 ml/L. Additionally, NiNP concentrations ranging from 6 mg/L to 150 mg/L were tested for CO₂ dissolution in seawater. The results indicated that a concentration of 10 mg/L NiNPs in 100 mg/L CMC provided a CO₂ dissolution of 57%, the highest for this specific CMC concentration. At CMC concentrations of 200 ml/L and 300 ml/L, NiNP concentrations of 70 mg/L and 90 mg/L achieved CO₂ dissolution rates of 58.8% and 67.2%, respectively.
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Date Issued
2024
PURL
http://purl.flvc.org/fau/fd/FA00014483
Subject Headings
Carbon sequestration, Global warming, Polymer chemistry, Nanoparticles
Format
Document (PDF)
Strength and durability of fly ash-based fiber-reinforced geopolymer concrete in a simulated marine environment
Title
Strength and durability of fly ash-based fiber-reinforced geopolymer concrete in a simulated marine environment.
Creator
Martinez Rivera, Francisco Javier, Sobhan, Khaled, College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description
This research is aimed at investigating the corrosion durability of polyolefin fiber-reinforced fly ash-based geopolymer structural concrete (hereafter referred to as GPC, in contradistinction to unreinforced geopolymer concrete referred to as simply geopolymer concrete), where cement is completely replaced by fly ash, that is activated by alkalis, sodium hydroxide and sodium silicate. The durability in a marine environment is tested through an electrochemical method for accelerated corrosion...
Show moreThis research is aimed at investigating the corrosion durability of polyolefin fiber-reinforced fly ash-based geopolymer structural concrete (hereafter referred to as GPC, in contradistinction to unreinforced geopolymer concrete referred to as simply geopolymer concrete), where cement is completely replaced by fly ash, that is activated by alkalis, sodium hydroxide and sodium silicate. The durability in a marine environment is tested through an electrochemical method for accelerated corrosion. The GPC achieved compressive strengths in excess of 6,000 psi. Fiber reinforced beams contained polyolefin fibers in the amounts of 0.1%, 0.3%, and 0.5% by volume. After being subjected to corrosion damage, the GPC beams were analyzed through a method of crack scoring, steel mass loss, and residual flexural strength testing. Fiber reinforced GPC beams showed greater resistance to corrosion damage with higher residual flexural strength. This makes GPC an attractive material for use in submerged marine structures.
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Date Issued
2013
PURL
http://purl.flvc.org/fau/fd/FA0004037
Subject Headings
Concrete mixing -- Quality control, Green chemistry, Polymer composites, Reinforced concrete -- Corrosion -- Testing, Reinforced concrete construction
Format
Document (PDF)
Synthesis and characterization of ruthenium-containing polymers derived from diamine-containing dyes
Title
Synthesis and characterization of ruthenium-containing polymers derived from diamine-containing dyes.
Creator
Murphy, Amanda Taylor, Florida Atlantic University, Carraher, Charles E.
Abstract/Description
Ruthenium-containing polymers derived from cis-dichloro-bis(2-2'-bipyridine) ruthenium and selected diamine-containing dyes have been synthesized. These polymeric products were characterized using FTIR, UV-Vis spectroscopy, light scattering photometry, and mass spectral analysis. Thermal degradation studies of these products are also presented.
Date Issued
1996
PURL
http://purl.flvc.org/fcla/dt/15244
Subject Headings
Polymers, Ruthenium compounds, Photochemistry, Dyes and dyeing--Chemistry, Solar energy
Format
Document (PDF)
Experimental evaluation of the durability of fly ash-based geopolymer concrete in the marine environment
Title
Experimental evaluation of the durability of fly ash-based geopolymer concrete in the marine environment.
Creator
Edouard, Jean-Baptiste., College of Engineering and Computer Science, Department of Civil, Environmental and Geomatics Engineering
Abstract/Description
The construction industry is increasingly turning to the use of environmentally friendly materials in order to meet the sustainable aspect required by modern infrastructures. Consequently, for the last two decades, the expansion of this concept, and the increasing global warming have raised concerns on the extensive use of Portland cement due to the high amount of carbon dioxide gas associated with its production. The development of geopolymer concretes offers promising signs for a change in...
Show moreThe construction industry is increasingly turning to the use of environmentally friendly materials in order to meet the sustainable aspect required by modern infrastructures. Consequently, for the last two decades, the expansion of this concept, and the increasing global warming have raised concerns on the extensive use of Portland cement due to the high amount of carbon dioxide gas associated with its production. The development of geopolymer concretes offers promising signs for a change in the way of producing concrete. However, to seriously consider geopolymer binders as an alternative to ordinary Portland cement, the durability of this new material should be evaluated in any comparative analysis. The main purpose of this study was to evaluate the durability characteristics of low calcium fly ash-based geopolymer concretes subjected to the marine environment, compared to ordinary Portland cement concrete with similar exposure. To achieve this goal, 8 molar geopolymer, 14 molar geopolymer and ordinary Portland cement concrete mixes were prepared and tested for exposure in seawater. Compressive strengths in the range of 2900 to 8700 psi (20-60 MPa) were obtained. The corrosion resistance performance of steel-reinforced concrete beams, made of these mixes, was also studied, using an accelerated electrochemical method, with submergence in salt water. The test results indicated that the geopolymer concrete showed excellent resistance to chloride attack, with longer time to corrosion cracking, compared to ordinary Portland cement concrete.
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Date Issued
2011
PURL
http://purl.flvc.org/FAU/3170960
Subject Headings
Reinforced concrete, Corrosion, Testing, Reinforced concrete construction, Concrete, Mixing, Quality control, Environmental chemistry, Industrial applications, Polymer composites
Format
Document (PDF)