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  • 1990-1994  (5)
  • 1975-1979
  • 1994  (5)
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  • 1990-1994  (5)
  • 1975-1979
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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and characterization of polyaniline-PVC polymer composite film (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 51 (1994), S. 1347-1349 
    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.1994.070510722
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure-property relationship in copolymers of methacrylic acid esters. I. Thermal behavior (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 53 (1994), S. 1525-1531 
    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: This article describes the synthesis and thermal characterization of copolymers of methyl methacrylate (MMA) and alkyl methacrylates. The copolymerization was carried out using different mol fractions (0.05-0.25) of alkyl methacrylates, i.e., octyl methacrylate (OMA)/decyl methacrylate (DMA)/lauryl methacrylate (LMA)/stearyl methacrylate (SMA), in the initial feed at 80°C. The copolymer composition was determined from 1H-NMR. The thermal stability of the copolymers was investigated by thermogravimetric analysis and pyrolysis gas chromatography. A two/three-step degradation was observed in the copolymer samples. The monomers were the major product of degradation in most of the copolymers except in SMA/MMA copolymers where the product of side-group elimination was also observed. An attempt was also made to determine the yield of the monomers during degradation and then to evaluate the copolymer composition. © 1994 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070531114
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Methyl nadimide resins: Synthesis and characterizationPaper presented at IXth National Symposium and Workshop on Thermal Analysis held at Goa on November 8-10, 1993. (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 53 (1994), S. 1073-1081 
    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: This article describes the synthesis and characterization of several methyl nadimides endcapped resins based on tris(3-aminophenyl)phosphine oxide. These resins were prepared by reacting methyl-5-norbornene 2,3-dicarboxylic anhydride (methyl nadic anhydride) (MNA), pyromellitic dianhydride (PMDA)/3,3′,4,4′-benzophenone tetracarboxylic acid dianhydride (BTDA)/2,2-bis(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6F), and tris(3-aminophenyl)phosphine oxide (TAP) in glacial acetic acid/acetone. Structural characterization of the resins was done by elemental analysis, IR, and 1H-NMR. Thermal characterization of uncured resins using DSC and TGA techniques revealed an exothermic transition accompanied by a weight loss in the temperature range of 200-350°C. Residual weight at 800°C in nitrogen was found to be 47-55%. Isothermal curing of the resins was done at 340°C for 1 h in an air atmosphere. The cured resins were stable up to 400 ± 20°C. © 1994 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070530809
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Preparation, characterization, and thermal behavior of MMA-N-aryl maleimide copolymers (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 54 (1994), S. 2165-2170 
    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 work describes the synthesis and characterization of copolymers of methyl methacrylate (MMA) and N-o-tolyl maleimide (MO)/N-p-tolyl maleimide (MP)/4-maleimido benzoic acid (MB). The copolymers were synthesized by varying the mol fraction of N-aryl maleimides from 0.1 to 0.5 in the initial feed using azobisisobutyronitrile (AIBN) as an initiator and tetrahydrofuran as the solvent. The copolymer composition was determined from the 1H-NMR spectra by taking the ratio of proton resonance signals due to —OCH3 of MMA (δ=3.59 ppm) and the aromatic protons (δ=7.0-7.3 ppm) of N-aryl maleimides. The monomer reactivity ratios of MMA-MP were r1=0.926±0.001 and r2=0.47±0.03 and MMA-;MO were r1=1.37±0.005 and r2=0.31±0.01. The initial decomposition temperature of copolymers and glass transition temperatures increased with increasing N-aryl maleimide content in the backbone. © 1994 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070541319
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Copolymers of methyl methacrylate and N-cyclohexyl maleimide: Preparation and properties (1994)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 221 (1994), S. 1-9 
    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: Durch radikalische Copolymerisation von Methylmethacrylat (MMA) und N-Cyclo-hexylmaleimid (NCM) in Benzol wurden Copolymere mit niedriger Grenzviskosität erhalten. Copolymere mit NCM-Gehalten zwischen 0 und 30 Gew.-% und wesentlich höheren Grenzviskositäten wurden auch mittels Copolymerisation in Substanz in Form von Platten hergestellt. Eine Erhöhung des NCM-Gehaltes bewirkte eine Zunahme der thermischen Stabilität, des E-Moduls und der Wasseraufnahme sowie eine Abnahme der Zugfestigkeit, der Bruchdehnung, der Schlagzähigkeit gekerbter Probekörper und der Lichtdurchlässigkeit. Die Trübung nahm bis zu einem NCM-Gehalt von 15 Gew.-% nur geringfügig zu.
    Notes: Copolymers of methyl methacrylate (MMA) and N-cyclohexyl maleimide (NCM) with low intrinsic viscosity were obtained when free-radical copolymerization was carried out in benzene solution. Copolymers containing 0-30 wt.-% NCM were also prepared by bulk polymerization as cast acrylic sheets and had much higher intrinsic viscosity. An increase in NCM content in copolymers resulted in an increase in thermal stability and modulues and a decrease in tensile strength, strain at break, impact strength of unnotched specimen and light transmittance. The increase in haze was marginal up to 15 wt.-% of NCM. A decrease in water absorption was observed with an increase in NCM content.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1994.052210101
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    Paper (German National Licenses)
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