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  • AB crosslinked polymer  (1)
  • Electroconductivity  (1)
  • N-(4-Carboxyphenyl)maleimide  (1)
  • Springer  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of polymer research 7 (2000), S. 251-255 
    ISSN: 1572-8935
    Keywords: N-(4-Carboxyphenyl)maleimide ; Acrylonitrile ; Monomer reactivity ratios ; Q, e Scheme ; Pervaporation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract N-(4-Carboxyphenyl)maleimide (N-4-CPMI, M1) was copolymerized with acrylonitrile (AN, M2) to prepare the copolymer. The monomer reactivity ratios and Alfrey-Price Q, e values were determined as r1 = 0.56, r2 = 0.84, Q 1 = 2.0, Q 2 = 0.6 and e 1 = 2.06, e 2 = 1.2. The membrane of copolymer containing 0.25% CPMI had a good tensile property (67.3 MPa). The 0.75 mole% membrane had an excellent selectivity factor (α = 45.3).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of polymer research 4 (1997), S. 177-182 
    ISSN: 1572-8935
    Keywords: AB crosslinked polymer ; Polyurethane ; Maleimide ; Allyl novolacs ; Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract To improve the miscibility and tensile strength of the ABCPs material, we conducted a study in which maleimide end-capped polyurethane was prepared from the PU prepolymer and maleimide by reacting 4,4′-diphenylmethane diisocyanate (MDI) with poly(tetramethylene oxide) (PTMO), whose molecular weights were Mn=600∼700 (PA650), Mn=900∼1050 (PA1000) and Mn=1900∼2100 (PA2000). AB crosslinked polymers (ABCPs), synthesized from the PU prepolymer and the novolac resin, were studied. The study confirmed the occurrence of phase mixing. Further investigation through dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC) and transmission electron microscopy (TEM) revealed that the tensile strength and phase mixing were,improved.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of polymer research 1 (1994), S. 25-34 
    ISSN: 1572-8935
    Keywords: Graft copolymer ; Poly(vinylalcohol) ; Acrylonitrile graft copolymer ; Electroconductivity ; Photoconductivity ; Metal chelated film
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract PVA-g-AN was prepared, the yield and the graft efficiency were determined. A PVA-g-AN metal chelated film was then prepared by mixing and soaking methods, separately. After treatment with NaBH4 aqueous solution or H2S gas, the electrical and photoconductive properties were investigated. In order to increase the adsorption amount for metal ion in the soaking method, the amidoxime group was introduced into the PVA-g-AN film in various conditions. The proposed structures of the metal chelated PVA-g-AN films were also studied.
    Type of Medium: Electronic Resource
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