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  • Polymer and Materials Science  (9)
  • Organic Chemistry  (3)
  • Physics  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Study of polymer-polymer complex formation involving phenolic copolymer, non-ionic polymers, and polyelectrolytes (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 184 (1991), S. 99-110 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus einem phenolischen Copolymeren bekannter Zusammensetzung und verschiedenen nicht ionischen Homopolymeren (PVP, PEO, PVA) sowie Polyelektrolyten wie PAA und PEI wurden in Lösung Mehrkomponenten-Interpolymerkomplexe hergestellt. Die Bildung dieser Komplexe wurde mit verschiedenen Methoden, wie Viskosimetrie, Potentiometrie, Konduktometrie und IR-Spektroskopie untersucht. Es wird ein Schema zur Erklärung der Art der Wechselwirkung zwischen den verschiedenen Polymerkomponenten vorgeschlagen.
    Notes: Multicomponent interpolymer complexes have been prepared by interacting a phenolic copolymer of known composition with several non-ionic homopolymers, e.g., PVP, PEO, PVA and polyelectrolytes, such as PAA and PEI. The formation of these complexes has been studied by several techniques, such as viscometry, potentiometry, conductometry, and IR spectra. A scheme has been presented to explain the mode of interaction of the various component polymers.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051840109
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  • 2
    Electronic Resource
    Electronic Resource
    Study of three and four component intermacromolecular complexes involving acrylic copolymers, metal ions, and non-ionic polymers (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 200 (1992), S. 1-13 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(methacrylsäure-co-methacrylamid) und Poly(acrylsäure-co-acrylamid) wurden hergestellt und mit bekannten Methoden charakterisiert. Die jeweiligen Comonomereinheiten der beiden Copolymeren können durch Wasserstoffbrückenbindung und Ion-Dipol-Wechselwirkungen Komplexe bilden. Die nicht-komplexierten Einheiten der Intercopolymerkomplexe können noch entweder mit anderen Homopolymeren wie Poly(N-vinylpyrrolidon) oder Poly(oxyethylen) wechselwirken oder mit Übergangsmetallionen drei- und vierkomponentige Komplexe bilden. Die Bildung solcher Komplexe wurde mittels Viskosimetrie, Konduktometrie, Potentiometrie und IR- und UV-Spektroskopie untersucht.
    Notes: Poly(methacrylic acid-co-methacrylamide) and poly(acrylic acid-co-acrylamide) have been synthesized and characterized by known methods. The respective comonomer units of the two copolymers enter into complex formation through hydrogen bonding and ion-dipole interactions. The unreacted units in the intercopolymer complex also interact with homopolymers such as poly(N-vinylpyrrolidone) and poly(oxyethylene) as well as transition metal ions to form three and four component intermacromolecular complexes. Formation of these complexes could be shown through several experimental techniques, e.g. viscometry, conductometry, potentiometry, IR and UV spectrophotometry.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.052000101
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  • 3
    Electronic Resource
    Electronic Resource
    Microporous clay membrance materials for reverse osmosis applications. I. Performance characteristics from osmotic studies (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 37 (1989), S. 1125-1136 
    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: Fired clay membranes were prepared from montmorillonite clay and also by incorporating protein (lysozyme) and nylon (copolymer of 6-amino caproic acid) to clay followed by firing these membranes at different temperatures for different durations of time. Osmotic behaviors of the membranes were studied, and the results were correlated to the porosity determined by scanning electron microscope. Reverse osmosis parameters, namely, the reflection coefficient, solute permeability, and rejection coefficient, of the membranes were determined from osmosis experiments. Rejection coefficients as determined from reverse osmosis were compared with those obtained from osmosis experiments.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1989.070370422
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  • 4
    Electronic Resource
    Electronic Resource
    Vapor sorption characteristics of condensable hydrocarbon vapor in low-density polyethylene (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 331-339 
    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: Sorption characteristics of vapors of pure hydrocarbon and their binary mixtures in low-density polyethylene were studied under various conditions of temperature and pressure. A new apparatus devised and utilized for the determination of composition of sorbed vapor in case of binary mixtures is described. The study demonstrates the effect of the presence of one component within the polymer on the sorption of another and also the occurrence of selectivity in sorption.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270201
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  • 5
    Electronic Resource
    Electronic Resource
    Polyaniline/Polymeric acid composite, a novel conducting rubber (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 40 (1990), S. 1049-1052 
    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
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1990.070400536
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  • 6
    Electronic Resource
    Electronic Resource
    Conduction mechanism in amorphous poly-N-vinylcarbazole films (1972)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 10 (1972), S. 2305-2309 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1972.180101117
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  • 7
    Electronic Resource
    Electronic Resource
    Photoinduced charge transfer at the poly(N-vinylcarbazole) - tin oxide interface (1975)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 13 (1975), S. 1275-1284 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: An investigation of steady state and transient photoconductivity in films of poly-(N-vinylcarbazole) equipped with SnO2 and metal electrodes is described. The studies have shown that photoinduced charge transfer, leading to hole injection into the polymer film, takes place with photons of energy greater than 1.8-1.9 eV. Dark conductivity studies on samples equipped with grounded guard rings have shown that carriers originating in the bulk of the polymer film dominate the dark current when the metal electrode is at negative bias. Thermionic hole emission from the SnO2 electrode is not observed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1975.180130702
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  • 8
    Electronic Resource
    Electronic Resource
    Solubility parameter and hydrocarbon sorption of low density polyethylene (1971)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 143 (1971), S. 181-187 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Eine neue, schnelle Methode, nämlich die Technik der Gaschromatographie, fand zur Bestimmung des Löslichkeitsparameters von Polyäthylen Anwendung. Zwischen den berechneten Mengen, die das Polymere von verschiedenen reinen Komponenten aufgenommen hat, und den experimentell bestimmten Mengen besteht ein logarithmischer Zusammenhang.
    Notes: A new and quick method, namely, the gaschromatographic technique, has been used to determine the solubility parameter of polyethylene. The calculated quantities of sorption of various pure components in polymer bears a logarithmic relationship to the experimental values.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1971.021430118
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  • 9
    Electronic Resource
    Electronic Resource
    Kinetics and mechanism of the reaction between trivalent manganese and carboxylic acids in aqueous solution. I. Reduction of trivalent manganese by tartrate (1965)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 28 (1965), S. 108-112 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The kinetics of the reduction of trivalent manganese by tartrate in aqueous solution has been studied. The reaction is catalysed by H+-ions and retarted by the presence of Mn2+. Increase in the concentration of tartrate lowers the rate of reduction of manganese (III). The temperature coefficient of the reaction which is first order, is 3.97 between 30° and 40°.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19650280112
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  • 10
    Electronic Resource
    Electronic Resource
    Kinetics of the Reaction between Citrate and Aqueous Iodine in presence of Mn(III) (1965)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 30 (1965), S. 1-5 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction between citrate and aqueous iodine is accelerated by the presence of tripositive managanese. The reaction is first order with respect to iodine and increase in concentration of Citrate suppresses the rate of reaction. Increase in the concentration of Mn(III) enhances the reaction rate. pH has a marked influence on the rate of reaction, the reaction being fastest at pH 4.25. The temperature coefficient is of the order of 3. The manganous ions lower the rate of reaction at pH higher than 3.30 while no such effect is noted below this pH. A suitable mechanism has been suggested.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19650300101
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