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  • Articles: DFG German National Licenses  (49)
  • Chemistry  (47)
  • 5-HT reuptake inhibitor  (2)
  • 11
    Electronic Resource
    Electronic Resource
    Impact modification of engineering thermoplastics (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 53 (1994), S. 527-541 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Impact modification was studied for a variety of engineering thermoplastics to determine if notched Izod data obtained at various temperatures and modifier concentrations could be correlated with particle size or surface-to-surface interparticle distance of the modifier. Elastomers evaluated were characteristic of those used in commercial blend systems for those polymers, and both functionalized and nonfunctionalized materials were studied. For the single matrix polymer/elastomer-modified blend systems studied [poly(phenylene sulfide) (PPS), polyoxymethylene (POM), poly(butylene terephthalate) (PBT)], elastomer interparticle distance provides a better correlation to brittle-tough transition temperature than does particle size, as predicted by the Wu model. In POM, the dispersion morphology of the samples used was not adequate to achieve the critical interparticle distance required for supertoughening at room temperature. In this study, the critical interparticle distance has been shown to depend on the degree of crystallinity (PPS) and the modulus of the impact modifier relative to the matrix (PBT). Actual adhesion of the polymer to the matrix (variation of functionality levels) was not found to have a strong influence (PBT). In POM, the increase in impact at the brittle-tough transition was dependent on the molecular weight of the base resin. This is examined with respect to the ratio of the molecular weight (Mn) to the entanglement molecular weight (Me), which determines the critical molecular weight necessary to achieve useful physical properties. In polyester (PET)/polycarbonate (PC)/elastomer blends, the molecular weight of the primary matrix resin (PET) determined impact properties within the molecular weight range of the resin studied. This was again related to the Mn/Me ratio for PET and PC. © 1994 John Wiley & Sons, Inc.
    Additional Material: 24 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070530507
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  • 12
    Electronic Resource
    Electronic Resource
    Decomposition kinetics of a phenolic-carbon composite. I. Resin available for volatilization (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 14 (1970), S. 747-756 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The isothermal decomposition of a phenolic resin in a phenolic-carbon cloth composite was measured at approximately 0.1 to 0.2 torr over the temperature range of 105°-718°C. The kinetics are initially first order and, in the later stages, second order. An analytic technique is provided for calculating the maximum quantity of resin which will volatilize during decomposition, thereby obviating the necessity of measurements for extended time periods. The amount of resin available for volatilization during decomposition varies with temperature and is in equilibrium with resin, which does not volatilize. Plots of the equilibrium constant versus the reciprocal absolute temperature show that two equilibria are involved: one which predominates up to 352°C and the other above this temperature. The heats of reaction are 2.2 and 15.3 kcal/mole. The first value is associated with hydrogen bonding and the second with decomposition and oxidation activation energies.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1970.070140318
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  • 13
    Electronic Resource
    Electronic Resource
    Decomposition kinetics of a phenolic-carbon composite. II. Rate relationships (1971)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 15 (1971), S. 91-103 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The isothermal decomposition of a phenolic resin in a phenolic-carbon cloth composite was measured in air at 0.1 to 0.2 torr over the temperature range 104-718°C. Two decomposition rate relationships are presented that can be used to predict decomposition. One assumes two second-order consecutive rate-controlling reactions, and the other assumes a diffusion-limited second-order reaction. Two rate constants govern each relationship, one being operative during the initial decomposition stages, and the other during the final stages. Evidence is presented to support the applicability of both relationships to predict decomposition over the entire temperature range studied. Arrhenius plots of the rate constants consist of several segments linearly connected. Activation energies and frequency factors computed from these segments cover a broad range of values. The activation energies are used to correlate the temperature ranges with the predominant products formed in these ranges.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1971.070150108
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  • 14
    Electronic Resource
    Electronic Resource
    Über die Elektrolyse von geschmolzenem Jodblei und Chlorblei in Rücksicht auf die Anwendung des Faraday'schen Gesetzes und die Theorie der Elektrolyse geschmolzener Salze (1901)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 28 (1901), S. 1-44 
    Details
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19010280102
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  • 15
    Electronic Resource
    Electronic Resource
    Die Bleisalze einiger Fruchtsäuren (1925)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 147 (1925), S. 68-80 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Fällt man verdünnte, mit Essigsäure schwach angesäuerte Lösungen der Alkalisalze von Citronen-, Bernstein-, Äpfel-, Wein- und Benzoesäure mit verdünnter Bleiacetatlösung, so bilden sich, unabhängig davon, welche der beiden Komponenten im Überschuß angewendet wird, durchweg Niederschläge der neutralen Bleisalze von normaler Zusammensetzung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19251470109
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  • 16
    Electronic Resource
    Electronic Resource
    Functionalized polyacetals, 1. Copolymerization of trioxane with 1,3-dioxep-5-ene and properties of the resulting copolymer (1990)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 191 (1990), S. 99-105 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 1,3,5-Trioxane (1) and 1,3-dioxep-5-ene (2) were copolymerized with BF3OEt2 at 65°C. The products, after base hydrolysis, were characterized by 13C and 1H NMR and were found to assume the chemical structure 4 of a copolymer containing oxymethylene and oxy-2-butenylene units with 4-hydroxy-2-butenyl and methoxy end groups, with the ratio of hydroxy-2-butenylene to methoxy end groups varying with experimental conditions. The copolymer demonstrates crystallinity and thermal stability comparable to poly(trioxane-co-ethylene oxide)s. Copolymer melting point was observed to decrease with increasing comonomer incorporation. The upper limit for incorporation of the comonomer 2 was found to be ca. 4 mol per cent. Viscosity and end group analysis (by 1H NMR) indicate molecular weights in the range of 104 to 105. The comonomeric unit demonstrates the ability to act as both a stopper against unzipping and as a trap for certain degrading agents.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1990.021910108
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  • 17
    Electronic Resource
    Electronic Resource
    Der mechanische Verwendungsbereich von Werkstoffen (1950)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 1 (1950), S. 51-52 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19500010202
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  • 18
    Electronic Resource
    Electronic Resource
    Kolloidchemisches Praktikum von E. Sauer. 2. Aufl. Verlag für angewandte Wissenschaften. Wiesbaden 1953. XIII, 122 S., geb. DM 9,80 (1954)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 5 (1954), S. 359-359 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19540050830
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  • 19
    Electronic Resource
    Electronic Resource
    Ultrafine particles (The electrochemical society series). W. E. Kuhn, H. Lamprey und C. Sheer. John Wiley & Sons Ltd., London 1964, 561 Seiten, Preis sh 113/ -  (1964)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 15 (1964), S. 700-701 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19640150815
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  • 20
    Electronic Resource
    Electronic Resource
    Phasen-Grenzlinien, insbesondere in ihrer Bedeutung für die Korrosion (1951)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 2 (1951), S. 365-367 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Phase boundary-lines, especially in their impotance for corrosionTwo phases have a common cleavageplane, whilst three phases touch one another along a boundary line only. Corroesponding to an adsorption in the first case in an adlineation in the second case. Both processes diminish the free energy and herewith the activity of the boundary, so inhibiting the possibilities of corrosion.Local elements, glow cathodes and catalysts consisting of several components are typical systems acting at microscopic boundary-lines. Cavitation is the inverse phenomenon.Macroscopic boundary-lines in partially filled containers, formed by wall, liquor and gaseous phase, are about this especially active, as being mixed with a four-phases-point-system, that results from the heterogeneity of the container wall. Gravity potentials, and electrokinetic potentials have their maximum value in the boundary-lines too.
    Notes: Zwei Phasen haben eine gemeinsame Grenzfläche, während drei Phasen sich nur entlang einer Grenzlinie berühren. Der Adsorption im ersten Falle entspricht eine Adlineation im zweiten Falle. Beide Vorgänge setzen die freie Energie und damit die Aktivität der Grenze herab, hemmen also Korrosionsmöglichkeiten.Lokalelemente, Glühkathoden und Mehrstoff-Katalysatoren sind typische Systeme, die an mikroskopischen Grenzlinien zur Wirkung kommen. Kavitation bildet die inverse Erscheinung hierzu.Makroskopische Grenzlinien an teilgefüllten Behältern, die durch Wandung, flüssigem Inhalt und gasförmiger Phasegebildet werden, sind darüber hinaus besonders aktiv, da sie von einem Vierphasen-Punktsystem durchsetzt sind, das infolge er heterogenität der Behälterwand resultiert.Gravitationspotentiale und elektrokinetische Potentiale haben ebenfalls in den begrenzenden Linien ihren maximalen Wert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19510021004
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