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... amounts of zinc acetate and/or acetic acid that were present from the neutralization step in the preparation of the ionomer. Two-dimensional X-ray diffraction patterns for the blends revealed that chain-packing within nanoparticles was different than that of the LCP or the homopolymers prepared from ...
... amounts of zinc acetate and/or acetic acid that were present from the neutralization step in the preparation of the ionomer. Two-dimensional X-ray diffraction patterns for the blends revealed that chain-packing within nanoparticles was different than that of the LCP or the homopolymers prepared from ...
Compositional and structural investigation of HCN polymer through
... understood, the HCN polymer spectrum shows prominent amine and nitrile features. The amine band is composed of numerous contributions with some of them potentially attributable to hydrogen bound amines (around 3190 cm−1 ) and other to free amines (no hydrogen bond) around 3350 cm−1 . No clear methyl ...
... understood, the HCN polymer spectrum shows prominent amine and nitrile features. The amine band is composed of numerous contributions with some of them potentially attributable to hydrogen bound amines (around 3190 cm−1 ) and other to free amines (no hydrogen bond) around 3350 cm−1 . No clear methyl ...
CO2 Dissociation using the Versatile Atmospheric Dielectric Barrier
... chemistry unavailable to traditional heating methods at large scales. The ability of nonthermal plasmas to excite these chemistries has created interest in using them for CCU. Some of the plasma systems previously tested are dielectric barrier discharges (DBDs) [15–21], microwave plasmas [22, 23], r ...
... chemistry unavailable to traditional heating methods at large scales. The ability of nonthermal plasmas to excite these chemistries has created interest in using them for CCU. Some of the plasma systems previously tested are dielectric barrier discharges (DBDs) [15–21], microwave plasmas [22, 23], r ...
Study of C4F8 `N2 and C4F8 `Ar`N2 plasmas for highly
... in the etching of various substrate materials. This layer inhibits the ions or neutrals from directly reacting with the substrate. Normally, etch rates are thought to decrease with the fluorocarbon thickness.5 On the other hand, ion-induced defluorination of the fluorocarbon layer enhances the etch ...
... in the etching of various substrate materials. This layer inhibits the ions or neutrals from directly reacting with the substrate. Normally, etch rates are thought to decrease with the fluorocarbon thickness.5 On the other hand, ion-induced defluorination of the fluorocarbon layer enhances the etch ...
multiscale simulation of atmospheric pressure pulsed discharges
... for biocompatibility can be quite different from those for adhesive bonding and so the surface treatment will vary depending on the application and the polymer structure. Most polymers are often treated or functionalized with the rationale of modifying their surface behavior while retaining the bulk ...
... for biocompatibility can be quite different from those for adhesive bonding and so the surface treatment will vary depending on the application and the polymer structure. Most polymers are often treated or functionalized with the rationale of modifying their surface behavior while retaining the bulk ...
Chemical Vapor Deposition (CVD)
... coatings, powders, fibers and monolithic components. • This technique is often used in many thin film applications. • By varying the experimental conditions—substrate material, substrate temperature, composition of the reaction gas mixture, total pressure gas flows, etc.— materials with different pr ...
... coatings, powders, fibers and monolithic components. • This technique is often used in many thin film applications. • By varying the experimental conditions—substrate material, substrate temperature, composition of the reaction gas mixture, total pressure gas flows, etc.— materials with different pr ...
國 立 交 通 大 學
... materials in which chemical components in vapor phase react to form a solid film at surfaces. The occurrence of a chemical reaction is essential to these means of film growth, as it is the requirement that reactants must start out in vapor phase. Ability to control the components of the gas phase, a ...
... materials in which chemical components in vapor phase react to form a solid film at surfaces. The occurrence of a chemical reaction is essential to these means of film growth, as it is the requirement that reactants must start out in vapor phase. Ability to control the components of the gas phase, a ...
Figure 2 - Universität Düsseldorf
... Models are developed to describe the involved processes of both removal methods. TCR is described using a reaction-diffusion model. Within this model the reactive gas diffuses into the co-deposits and subsequently reacts in a thermally activated process. The co-deposits are pyrolysed, forming volati ...
... Models are developed to describe the involved processes of both removal methods. TCR is described using a reaction-diffusion model. Within this model the reactive gas diffuses into the co-deposits and subsequently reacts in a thermally activated process. The co-deposits are pyrolysed, forming volati ...
Microporous polymer beads for chemical
... inhibit the enzyme acetylcholinesterase (AChE). As organophosphorus nerve agents easily reach the active site of AChE and inhibit the enzyme, it was hoped that effective polymeric decontaminants could be prepared by mimicking the structural and functional characteristics of AChE. In the present stud ...
... inhibit the enzyme acetylcholinesterase (AChE). As organophosphorus nerve agents easily reach the active site of AChE and inhibit the enzyme, it was hoped that effective polymeric decontaminants could be prepared by mimicking the structural and functional characteristics of AChE. In the present stud ...
EFFECT OF LEWIS ACID IN TiCl4/MgCl2/THF/AlCl3 CATALYST
... The Ziegler-Natta (ZN) catalyst system for ethylene polymerization by combinations of transition metal and organometallic compound has been discovered since 1950s. In general, heterogeneous ZN catalyst is based on titanium chloride supported on magnesium dichloride (TiCl4/MgCl2). MgCl2 is suitable s ...
... The Ziegler-Natta (ZN) catalyst system for ethylene polymerization by combinations of transition metal and organometallic compound has been discovered since 1950s. In general, heterogeneous ZN catalyst is based on titanium chloride supported on magnesium dichloride (TiCl4/MgCl2). MgCl2 is suitable s ...
Toward Greener Chemistry Methods for Preparation of
... scheme of hybrids materials composed by two components, in which one of them is ar‐ ranged so that synergistic properties can be achieved. The hybrid polymer materials can be classified depending of the nature of interactions be‐ tween their components. In particular, when structural materials in th ...
... scheme of hybrids materials composed by two components, in which one of them is ar‐ ranged so that synergistic properties can be achieved. The hybrid polymer materials can be classified depending of the nature of interactions be‐ tween their components. In particular, when structural materials in th ...
Mechanochemistry: the varied applications of mechanical bond
... were cracked by breaking of intermolecular cohesive ligations producing very high surface area for the solid-solid reaction with equally micronized reagent crystallites or with liquids. A fair reactivity comparison for solid-liquid reactions would be the use of pre-milled C60 for the reaction with t ...
... were cracked by breaking of intermolecular cohesive ligations producing very high surface area for the solid-solid reaction with equally micronized reagent crystallites or with liquids. A fair reactivity comparison for solid-liquid reactions would be the use of pre-milled C60 for the reaction with t ...
Surface and sub-surface reactions during low temperature
... This study focuses on chemical reactions that occur upon vapor-phase metal-organic precursor exposure during lowtemperature atomic layer deposition on reactive and nonreactive polymer surfaces. Several common polymers with different ...
... This study focuses on chemical reactions that occur upon vapor-phase metal-organic precursor exposure during lowtemperature atomic layer deposition on reactive and nonreactive polymer surfaces. Several common polymers with different ...
Synthesis of PbS Nanoclusters within Block Copolymer Nanoreactors
... Polymers A and B had different morphologies, although they had the same target composition. This is a result of the kinetic barriers32 to attainment of the equilibrium phase-separated morphology, and the faster evaporation of the solvent while static casting films of polymer A. The morphologies were ...
... Polymers A and B had different morphologies, although they had the same target composition. This is a result of the kinetic barriers32 to attainment of the equilibrium phase-separated morphology, and the faster evaporation of the solvent while static casting films of polymer A. The morphologies were ...
Thermal Decomposition of Polymers - Marcelo Hirschler
... window glass. While it appears to be a solid, it is in fact a fluid that over long periods of time (centuries) will flow noticeably. Despite this, at low temperatures amorphous materials do have structural properties of normal solids. At a temperature known as the glass transition temperature in pol ...
... window glass. While it appears to be a solid, it is in fact a fluid that over long periods of time (centuries) will flow noticeably. Despite this, at low temperatures amorphous materials do have structural properties of normal solids. At a temperature known as the glass transition temperature in pol ...
Class 3 updated Sep 30 2011
... There are two major steps in diffusion doping: predeposition and drive-in. During predeposition, impurity atoms are transported from the source onto the wafer surface and diffused into the wafer. The number of atoms that enter the wafer surface is limited by the solid solubility of the dopant in the ...
... There are two major steps in diffusion doping: predeposition and drive-in. During predeposition, impurity atoms are transported from the source onto the wafer surface and diffused into the wafer. The number of atoms that enter the wafer surface is limited by the solid solubility of the dopant in the ...
SYNTHESIS OF HIGH MOLECULAR WEIGHT POLY (METHYL
... anionic active center.9 Where living means that chain termination does not occur until the addition of a terminating agent.10 Ideally the growing chain is always reactive and adding additional monomers. Based on the properties above, it has two important features: 1. In the absence of termination an ...
... anionic active center.9 Where living means that chain termination does not occur until the addition of a terminating agent.10 Ideally the growing chain is always reactive and adding additional monomers. Based on the properties above, it has two important features: 1. In the absence of termination an ...
Plasma Treatment for Environment Protection
... keeping our economy running, also has a significant share in both to the air and water pollution. The production of various commodities, as well as livestock and other agricultural activities is an additional source of pollution with a very large variety of pollutants. The pollution from these sourc ...
... keeping our economy running, also has a significant share in both to the air and water pollution. The production of various commodities, as well as livestock and other agricultural activities is an additional source of pollution with a very large variety of pollutants. The pollution from these sourc ...
Template-Directed Synthesis of Structurally Defined Branched
... structurally defined branched polymer architectures based on chemically modified DNA. Overall, this approach enables precise control over branch placement, grafting density, and chemical identity of side branches. We utilize a two-step scheme based on polymerase chain reaction (PCR) for site-specific i ...
... structurally defined branched polymer architectures based on chemically modified DNA. Overall, this approach enables precise control over branch placement, grafting density, and chemical identity of side branches. We utilize a two-step scheme based on polymerase chain reaction (PCR) for site-specific i ...
Full-Text
... Selection of the appropriate experimental conditions can lead to fibers with diameters that can range from several micrometers to few nanometers in an extremely rapid process (millisecond scale) [29]. The technique is also characterized by a huge material elongation rate (1000 s−1), high cross-secti ...
... Selection of the appropriate experimental conditions can lead to fibers with diameters that can range from several micrometers to few nanometers in an extremely rapid process (millisecond scale) [29]. The technique is also characterized by a huge material elongation rate (1000 s−1), high cross-secti ...
Course Description Word File
... Design for Polymer Analysis Yr. : 3 Sem. : 2 Course Code: GC1022 To increase the design ability of polymer materials by studying the fundamentals of polymer materials and characterization, by selecting polymer materials, which can be found in our living environment and industries, and performing tea ...
... Design for Polymer Analysis Yr. : 3 Sem. : 2 Course Code: GC1022 To increase the design ability of polymer materials by studying the fundamentals of polymer materials and characterization, by selecting polymer materials, which can be found in our living environment and industries, and performing tea ...
Chemical reaction model:
... The process of natural oxidative degradation takes years and it is not possible to wait that long for data to be available when testing new materials. Hence, the oxidation of polymer is frequently carried at elevated temperature and pressure of oxygen. Elevation in temperature and pressure leads to ...
... The process of natural oxidative degradation takes years and it is not possible to wait that long for data to be available when testing new materials. Hence, the oxidation of polymer is frequently carried at elevated temperature and pressure of oxygen. Elevation in temperature and pressure leads to ...
doc_296
... the concept and implications of 'double exponential' growth. Double exponential growth, similar to a rapid growth technique for linear polymers, involves an AB2 monomer with orthogonal protecting groups for the A and B functionalities. This approach allows the preparation of monomers for both conver ...
... the concept and implications of 'double exponential' growth. Double exponential growth, similar to a rapid growth technique for linear polymers, involves an AB2 monomer with orthogonal protecting groups for the A and B functionalities. This approach allows the preparation of monomers for both conver ...
00410135.pdf
... many locations on the tractor and trailer where the use of PFC can help reduce drag. In fact, if these actuators contribute as expected, redesign of both tractor and trailer may be in order. At this point in the research, most of the attention is being placed on after-market additions to existing de ...
... many locations on the tractor and trailer where the use of PFC can help reduce drag. In fact, if these actuators contribute as expected, redesign of both tractor and trailer may be in order. At this point in the research, most of the attention is being placed on after-market additions to existing de ...
Ring-Opening Metathesis Polymerization of Norbornene by Cp
... complex is active for the ring-opening metathesis polymerization (ROMP) of certain cycloalkenes in both protic and aprotic solvents. To survey the catalytic ability of Cp*2Os2Br4, we treated solutions of this complex with 1000 equiv of several cycloalkenes (norbornene, 5-norbornen-2-yl acetate, norb ...
... complex is active for the ring-opening metathesis polymerization (ROMP) of certain cycloalkenes in both protic and aprotic solvents. To survey the catalytic ability of Cp*2Os2Br4, we treated solutions of this complex with 1000 equiv of several cycloalkenes (norbornene, 5-norbornen-2-yl acetate, norb ...
Plasma polymerization
Plasma polymerization (or glow discharge polymerization) uses plasma sources to generate a gas discharge that provides energy to activate or fragment gaseous or liquid monomer, often containing a vinyl group, in order to initiate polymerization. Polymers formed from this technique are generally highly branched and highly cross-linked, and adhere to solid surfaces well. The biggest advantage to this process is that polymers can be directly attached to a desired surface while the chains are growing, which reduces steps necessary for other coating processes such as grafting. This is very useful for pinhole-free coatings of 100 picometers to 1 micrometre thickness with solvent insoluble polymers.