Polymer in EFKA -4550
... formulation, but the notifier indicates that this will be minimal and amount to approximately 3% of the imported polymer. The material released in this manner is likely to be associated with cleaning solvents which will presumably be recycled for solvent recovery. The discarded polymer will become i ...
... formulation, but the notifier indicates that this will be minimal and amount to approximately 3% of the imported polymer. The material released in this manner is likely to be associated with cleaning solvents which will presumably be recycled for solvent recovery. The discarded polymer will become i ...
Critical Point Dryer
... 1 One of the compounds that participates in the chemical reaction that produces another compound 2 The amount of film material deposited in each reaction cycle is constant 3 1pm ( picometer) = 1x10-12 ...
... 1 One of the compounds that participates in the chemical reaction that produces another compound 2 The amount of film material deposited in each reaction cycle is constant 3 1pm ( picometer) = 1x10-12 ...
A comparison of carbon tetrachloride decomposition
... allowed for determination of the content of other organic compounds containing chlorine. Cl2 and COCl2 were analyzed using titration analysis. Gas was periodically passed by two bubblers with solution of KI (10 mmol) in water (100 mL). In this solution Cl2 reacted with KI to form I2 and KCl. COCl2 r ...
... allowed for determination of the content of other organic compounds containing chlorine. Cl2 and COCl2 were analyzed using titration analysis. Gas was periodically passed by two bubblers with solution of KI (10 mmol) in water (100 mL). In this solution Cl2 reacted with KI to form I2 and KCl. COCl2 r ...
... The doped polymer is thus a salt. However, it is not the counter ions, I3– or Na+, but the charges on the polymer that are the mobile charge carriers (see Mechanism of polymer conductivity, below). By applying an electric field perpendicular to the film, the counter ions can be made to diffuse from ...
Plasma Surface Technology - Diener electronic GmbH + Co. KG
... to the surrounding air leads to deposits from the atmosphere. Wet chemical cleaning will not remove these deposits from cavities and narrow gaps. Moreover, it pollutes the environment and often damages the substrate itself. Plasma cleaning removes all organic residue from any material. ...
... to the surrounding air leads to deposits from the atmosphere. Wet chemical cleaning will not remove these deposits from cavities and narrow gaps. Moreover, it pollutes the environment and often damages the substrate itself. Plasma cleaning removes all organic residue from any material. ...
33 POLYMERS I OPTIONAL MODULE - 2
... like fibres and therefore can be woven into fabrics. The common examples are nylon66, dacron, silk, etc. 3. Thermoplastics : These are linear polymers with very few cross linkages or no cross linkages at all. The polymeric chains are held by weak VANDER WAAL forces and slide over one another. Due to ...
... like fibres and therefore can be woven into fabrics. The common examples are nylon66, dacron, silk, etc. 3. Thermoplastics : These are linear polymers with very few cross linkages or no cross linkages at all. The polymeric chains are held by weak VANDER WAAL forces and slide over one another. Due to ...
Synthetic Polymers
... Let’s consider the structure of polyethylene in more detail. First, it is important to note that the number of monomers varies widely from one macromolecule to another. The termination steps, which stop the growth of individual polymer chains, occur at random times during the polymerization of those ...
... Let’s consider the structure of polyethylene in more detail. First, it is important to note that the number of monomers varies widely from one macromolecule to another. The termination steps, which stop the growth of individual polymer chains, occur at random times during the polymerization of those ...
Hydrogen-Peroxide-Enhanced Nonthermal Plasma Effluent for
... in biological applications [3]. In direct methods, the target to be decontaminated or treated is physically present in the discharge region. Such direct treatment is most commonly accomplished using a dielectric-barrier discharge (DBD), where the target is a floating electrode. In indirect methods, ...
... in biological applications [3]. In direct methods, the target to be decontaminated or treated is physically present in the discharge region. Such direct treatment is most commonly accomplished using a dielectric-barrier discharge (DBD), where the target is a floating electrode. In indirect methods, ...
Plasma Clean to Reduce Wire Bond Failures
... Assuming that our bonding process is well optimized and that our metallizations are “in order” in terms of thickness, adhesion, surface topography, density, and so on, the cause of a poorly formed bond, i.e. a bond with a low bond area consisting largely of non‐coalesced microbonds, is almost always ...
... Assuming that our bonding process is well optimized and that our metallizations are “in order” in terms of thickness, adhesion, surface topography, density, and so on, the cause of a poorly formed bond, i.e. a bond with a low bond area consisting largely of non‐coalesced microbonds, is almost always ...
Unit B Chemistry Unit study guide
... halogens, noble gases as well as metals vs nonmetals Why are lanthanides and actinides on bottom? What are the only two liquids? Where are the gasses? Which element is in a group of its own? Which element is needed for substances to burn? Mendeleev did such a great job creating his periodic table be ...
... halogens, noble gases as well as metals vs nonmetals Why are lanthanides and actinides on bottom? What are the only two liquids? Where are the gasses? Which element is in a group of its own? Which element is needed for substances to burn? Mendeleev did such a great job creating his periodic table be ...
File - Mr Weng`s IB Chemistry
... • Low density polyethene (LDPE) has some branching and is more flexible. • Plasticizers added to a polymer increase the flexibility by weakening the intermolecular forces between the polymer chains. • Atom economy is a measure of efficiency applied in green chemistry. • Isotactic addition polymers h ...
... • Low density polyethene (LDPE) has some branching and is more flexible. • Plasticizers added to a polymer increase the flexibility by weakening the intermolecular forces between the polymer chains. • Atom economy is a measure of efficiency applied in green chemistry. • Isotactic addition polymers h ...
ADDITIVES
... ADDITIVES Any Substance that is added generally in small concentration to resins in order to : • Alter their properties • Facilitate processing • Change the physical, chemical or electrical properties of end products. • Reduce the cost ...
... ADDITIVES Any Substance that is added generally in small concentration to resins in order to : • Alter their properties • Facilitate processing • Change the physical, chemical or electrical properties of end products. • Reduce the cost ...
amcommu 555..558 - Leibniz-Institut für Polymerforschung Dresden
... remarkable that the geometrical features introduced by microprinting are retained accurately during the polymerization process. We prepared micropatterned peptide layers with individual repeating motifs with dimensions between 3.8 mm and 100 mm. From the structured surface it is possible to determin ...
... remarkable that the geometrical features introduced by microprinting are retained accurately during the polymerization process. We prepared micropatterned peptide layers with individual repeating motifs with dimensions between 3.8 mm and 100 mm. From the structured surface it is possible to determin ...
Capture and immobilisation of Iodine (I2) utilising polymer
... of hard and soft segments, as shown in (a), where the hard segments form bonds with other organic or organic based compounds. Matrimid is a glassy polymer, forming hard and very durable coating when dried. It is also made up of quite a few benzene rings, as shown in (b), which could form π-π bonds w ...
... of hard and soft segments, as shown in (a), where the hard segments form bonds with other organic or organic based compounds. Matrimid is a glassy polymer, forming hard and very durable coating when dried. It is also made up of quite a few benzene rings, as shown in (b), which could form π-π bonds w ...
Decontamination of chemical and biological warfare „CBW… agents
... He/O2 /H2O!, which flows between an outer, grounded, cylindrical electrode and an inner, coaxial electrode powered at 13.56 MHz rf. While passing through the plasma, the feedgas becomes excited, dissociated or ionized by electron impact. Once the gas exits the discharge volume, ions and electrons ar ...
... He/O2 /H2O!, which flows between an outer, grounded, cylindrical electrode and an inner, coaxial electrode powered at 13.56 MHz rf. While passing through the plasma, the feedgas becomes excited, dissociated or ionized by electron impact. Once the gas exits the discharge volume, ions and electrons ar ...
Technology Moving Forward Technology Moving Forward
... January 2012 issue of the Journal of Food Protection, plasma can be an effective method for killing pathogens (harmful bacteria ) on uncooked poultry. The treatment either entirely or nearly eliminated salmonella enterica and campylobacter jjejuni j bacteria in low levels from skinless chicken ...
... January 2012 issue of the Journal of Food Protection, plasma can be an effective method for killing pathogens (harmful bacteria ) on uncooked poultry. The treatment either entirely or nearly eliminated salmonella enterica and campylobacter jjejuni j bacteria in low levels from skinless chicken ...
First Poly(2-oxazoline)s with Pendant Amino Groups
... the different initiator, all of the polymerization reactions were performed according to a previously described procedure.[3,16,21,35] All polymerizations were terminated with an excess of piperidine.[55] Analogous to our recent account on poly(2-oxazoline)s featuring pendant aldehyde functions, a s ...
... the different initiator, all of the polymerization reactions were performed according to a previously described procedure.[3,16,21,35] All polymerizations were terminated with an excess of piperidine.[55] Analogous to our recent account on poly(2-oxazoline)s featuring pendant aldehyde functions, a s ...
Synthetic Polymers - McQuarrie General Chemistry
... The simplest very large molecule, or macromolecule, is polyethylene. Polyethylene is formed by joining many ethylene molecules, H2C=CH2, end to end. The repeated addition of small molecules to form a long, continuous chain is called polymerization, and the resulting chain is called a polymer (poly = ...
... The simplest very large molecule, or macromolecule, is polyethylene. Polyethylene is formed by joining many ethylene molecules, H2C=CH2, end to end. The repeated addition of small molecules to form a long, continuous chain is called polymerization, and the resulting chain is called a polymer (poly = ...
File
... acid catalyst, such as H2SO4(aq), is used to increase the rate of this organic reaction, along with some careful heating. ...
... acid catalyst, such as H2SO4(aq), is used to increase the rate of this organic reaction, along with some careful heating. ...
Structure and Properties of Polymers
... Macromolecular Chemistry of the Academy of Sciences of the Czech Republic in Prague, one of the major institutes devoted to basic research in polymer science world-wide. From 1990 to 1998, he served two four-years terms as the director of the Institute. He is also professor of macromolecular chemist ...
... Macromolecular Chemistry of the Academy of Sciences of the Czech Republic in Prague, one of the major institutes devoted to basic research in polymer science world-wide. From 1990 to 1998, he served two four-years terms as the director of the Institute. He is also professor of macromolecular chemist ...
Frieder Jäkle FUNCTIONAL MATERIALS AND ORGANOBORON
... in the formation of soluble, isolable polymeric donor acceptor complexes with pyridines. A temperature-dependent equilibrium between coordinated and non-coordinated sites on the other hand is established with weak donors. The supramolecular assembly of polymeric Lewis acids and Lewis bases is expect ...
... in the formation of soluble, isolable polymeric donor acceptor complexes with pyridines. A temperature-dependent equilibrium between coordinated and non-coordinated sites on the other hand is established with weak donors. The supramolecular assembly of polymeric Lewis acids and Lewis bases is expect ...
Plasma Sources and Feedback Control in Pretreatment Web
... the nature of polymers as well as humidity, the process needs to be controlled in order to maintain these “clean” conditions. By controlling the chromium emission intensity as shown in Figure 8, these processes can be kept constant. It is also critical that the process be controlled so that no exces ...
... the nature of polymers as well as humidity, the process needs to be controlled in order to maintain these “clean” conditions. By controlling the chromium emission intensity as shown in Figure 8, these processes can be kept constant. It is also critical that the process be controlled so that no exces ...
v Plasma Particle Technology
... Coatings are produced with a plasma jet into which either liquid particle dispersions or solid powders are introduced. The range of available starting materials here covers several ...
... Coatings are produced with a plasma jet into which either liquid particle dispersions or solid powders are introduced. The range of available starting materials here covers several ...
Grafting of Chemical Groups onto Polymers by Means of RF
... previously plasma-grafted with oxygen-containing groups, -COOH among them [14, 471. Heparin- and HyalS3.g-immobilized samples show higher anticoagulant character respect to the unmodified polymer. Due to its anti-thromboticanticoagulant character, heparin is widely used in the treatment of cardiovas ...
... previously plasma-grafted with oxygen-containing groups, -COOH among them [14, 471. Heparin- and HyalS3.g-immobilized samples show higher anticoagulant character respect to the unmodified polymer. Due to its anti-thromboticanticoagulant character, heparin is widely used in the treatment of cardiovas ...
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.