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  • 1
    ISSN: 1042-7147
    Keywords: Polyaniline lithium rechargeable battery ; Electrochemical polymerization ; Conducting polymer ; 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
    Notes: A series of coin-type lithium secondary batteries with polyaniline positive electrodes was developed and commercialized which might be not only the first practical polymer battery but also the first industrial application of conducting polymers. Performances of the commercialized batteries were described in detail in this paper.In order to achieve the development the most important thing was the optimization of molecular structure and molphology of multiguise polyaniline as the electrode material. According to the findings obtained during the development, polyaniline sheet was prepared substantially to be composed of imino-1,4-phenylene (IP) and the cation radical of IP (IP+) by the novel procedure, not to include quinoid configuration of polyaniline (NP) which was proved to be electrochemically inactive in non-aqueous systems.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0360-6384
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Conditions for preparation of acetylene-butadiene random copolymers were investigated. Only a combination of organonickel compound and dialkylaluminum halide was able to copolymerize acetylene and butadiene to give soluble, linear, random copolymers in high yield. Toluene and xylene were the preferred solvents for the copolymerization. The catalyst activity and copolymer composition were influenced by the Al/Ni molar ratio, polymerization temperature, polymerization time, and conditions of preparation of catalyst.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Copolymerization of acetylenic monomers and 1,3-dienes was carried out by use of nickel naphthenate-diethylaluminum chloride catalyst. The molecular weight of the copolymers is rather low, and the copolymers are suitable as prepared for direct use as coating vehicles. In the system of acetylene and 1,3-dienes, the order of the copolymerization rate decreases in the following order: butadiene 〉 isoprene 〉 2,3-dimethylbutadiene 〉 chloroprene. 1,3-Dienes substituted at 1-and/or 4-position were scarcely copolymerized with acetylene. Methylacetylene and dienes tend to form cyclized copolymers. In the system of phenylacetylene and dienes, polyphenylacetylene was the main product; the copolymer was not obtained. The copolymer composition and the sequence distribution of linear copolymers were evaluated by 1H-NMR spectra. Comparison of dyad fractions of copolymers evaluated from NMR spectra and those calculated by assuming random polymerization indicated that the copolymers of acetylene and dienes were random, and that the copolymers of methylacetylene and dienes were somewhat blocky. The coordination of monomers on the catalyst may play an important role in controlling the copolymerizability.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 6
    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: Die protonenentkoppelten 13C-Kernresonanzspektren (natürliche Isotopenhäufigkeit) des äquibinären (cis-1,4 - 1,2)-Polybutadiens wurden gemessen. Alle Resonanzen im aliphatischen Bereich wurden zugeordnet; hierbei wurden geschätzte Korrekturterme für die chemischen Verschiebungen im vorliegenden System zusammen mit den GRANTschen Parametern verwendet. Für jeden Peak wurde außerdem angegeben, ob er zu einer Diade oder Triade von cis-1,4- und 1,2-Einheiten gehört. Die gemessenen relativen Intensitäten der Peaks stimmten mit den berechneten Intensitäten überein; der Rechnung wurde eine regellose Verteilung der cis-1,4- und der 1,2-Einheiten zugrunde gelegt. Die gaschromatographische Analyse der Ozonolyseprodukte der Polymere zeigte ebenfalls eine regellose Verteilung der beiden Einheiten an.
    Notes: The proton decoupled natural abundant 13C-NMR spectra of equibinary (cis-1,4 - 1,2)-polybutadiene were measured. Assignments of spectra were made for all peaks of the aliphatic range using chemical shift corrective terms estimated for the present system together with GRANT's parameters. Each peak was interpreted in terms of the diad or triad of cis-1,4 and 1,2 units. The relative intensities of the peaks were in good agreement with the calculated ones from the random assumption with respect to the distribution of cis-1,4 and 1,2 units. The gas-chromatographic analysis of the ozonolysis product of the polymers also showed that the sequence distribution of cis-1,4 and 1,2 units was random.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 21 (1977), S. 597-609 
    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: Low molecular weight, M̄n 1800-2400, and soluble copolymers of acetylene and butadiene were prepared by nickel naphthenate-diethylaluminum chloride catalyst. These copolymers possess high cure tendency to give insoluble and highly crosslinked films. The curing ability can be controlled by the amount of acetylene content in the copolymer and is in the following order: acetylene-butadiene copolymer 〉 tung oil 〉 cis-1,4-polybutadiene ≫ linseed oil, 1,2-polybutadiene, butadiene-isobutylene copolymer. Chemical modifications of the copolymer such as maleic reaction, metallation by lithium or sodium, graft polymerization by methyl methacrylate, 4-vinylpyridine or vinyl acetate, and epoxidation were also examined. The divinyl methylene in the copolymer gives a high cure tendency and high chemical reactivity.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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