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  • 1995-1999  (2)
  • Chemistry  (2)
  • [abr] CaM; calmodulin
  • 1
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 55 (1995), S. 1451-1464 
    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: Four copper phthalocyanines without substituent (CuPc) and with chlorine (CuPc-Cl), hydroxymethyl (CuPc-CH2OH), and phthalimidomethyl substituents (CuPc-CH2N-[C(O)]2Ph) were plasma-polymerized to obtain amorphous and thin films having the extended π-electron system. The chemical composition of the plasma polymer films was discussed from the data of the electronic spectra, IR spectra, and XPS spectra. The application of the plasma polymer films was discussed with regard to the NO2 sensitivity, the NO2 selectivity, the response time, and the reversibility. Plasma polymerization of CuPc, CuPc-Cl, CuPc-CH2OH, and CuPc-CH2OH gives amorphous films having the extended π-electron system. In the plasma polymerization process, a part of the extended π-electron system is broken down. The CH2OH and CuPc-CH2N[C(O)]2Ph substituents contribute to minimizing the degradation. The Cu atoms liberated from the chelation in the plasma polymerization process exist as CuO in the deposited films. The plasma polymer films of CuPc-CH2OH and CuPc-CH2N[C(O)]2Ph show good sensitivity to NO2 molecules. With regard to the sensitivity, the selectivity, the response time and the reversibility, the plasma polymer films are applicable materials to the NO2 sensor device. © 1995 John Wiley & Sons, Inc.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 38 (1995), S. 111-117 
    ISSN: 0959-8103
    Keywords: epoxidized natural rubber ; moisture cure ; sol-gel process ; in situ silica reinforcement ; tensile properties ; 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: Epoxidized natural rubber (ENR) was first precured with 3-aminopropyltriethoxysilane (APS) by the normal compression molding technique. The resultant sheet was further subjected to moisture cure, via hydrolysis and condensation reactions, by soaking it in water. The moisture-cured sample, when prepared under appropriate reaction conditions, demonstrated partial strain-induced crystallization behavior and moderate tensile strength, as opposed to typical peroxide-cured and sulfur-cured vulcanizates. The suitability of the ENR-APS precured sample for in-situ silica reinforcement by the sol-gel process, using tetraethyl orthosilicate (TEOS) as the silica precursor, was also demonstrated. Silica content as high as 36% by weight could be incorporated into the rubber, and TEOS-to-silica conversion of over 60% was observed. Comparative analysis with a typical peroxide-cured sample that was subjected to the same sol-gel process indicates that the silica in the final ENR-APS sol-gel vulcanizate is chemically bound to the rubber network.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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