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  • 1
    Electronic Resource
    Electronic Resource
    Chemical reactions in the low-temperature decomposition of an epoxy resinThis research was conducted under the McDonnell Douglas Independent Research and Development program. (1988)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 26 (1988), S. 409-412 
    Details
    ISSN: 0887-6258
    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
    URL: http://dx.doi.org/10.1002/pol.1988.140260907
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  • 2
    Electronic Resource
    Electronic Resource
    Verbindungen mit Si-O-Se und Ge-O-Se-Gruppierungen (1961)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 73 (1961), S. 408-408 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19610731113
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Chemie des Selentrioxyds (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 75 (1963), S. 1024-1024 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19630752110
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  • 4
    Electronic Resource
    Electronic Resource
    Absorption of toluene in poly(aryl-ether-ether-ketone) (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 30 (1992), S. 113-126 
    Details
    ISSN: 0887-6266
    Keywords: sorption of toluene in PEEK, swelling and temperature effects in ; poly(aryl-ether-ether-ketone), transport of toluene penetrant in and swelling of ; morphology and swelling of PEEK in toluene ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The absorption and swelling of poly(aryl-ether-ether-ketone) (PEEK) in toluene as a function of resin morphology and temperature in the range 35-95°C was investigated. In all cases the weight gain curves exhibit three characteristics: (1) an induction period, which is a strong function of both temperature and initial crystallinity, (2) a main absorption region, which is linear with square-root time, and (3) a final equilibrium value, namely, solubility. The solubility of amorphous PEEK decreases with temperature and the heat of solution is -0.93 kcal/mol. The induction period varies with the fourth power of the crystallinity and decreases with temperature with an apparent activation energy of 50 kcal/mol. The strength of the interaction between the crystalline regions is markedly reduced at temperatures greater than 80°C. Swelling accompanying the absorption of the toluene is highly anisotropic with most of the dimensional changes occurring in the thickness direction. The deswelling process, however, is essentially isotropic. The concentration of toluene in solution has a strong effect on the transport process; the equilibrium solubility of toluene in amorphous PEEK immersed in a toluene/iso-octane mixture is a linear function of toluene concentration; but the pseudo-diffusion coefficient for the absorption of toluene varies approximately with the fourth power of its concentration.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1992.090300201
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  • 5
    Electronic Resource
    Electronic Resource
    Solvent-induced crystallinity in poly(aryl-ether-ether-ketone) [PEEK] (1992)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 30 (1992), S. 251-257 
    Details
    ISSN: 0887-6266
    Keywords: poly(aryl-ether-ether-ketone) (PEEK), solvent-induced crystallinity in ; crystallization of PEEK, solvent-induced ; sorption of solvents in PEEK, crystallinity induced by ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The amount and structure of the crystals formed by the solvent-induced crystallization (SIC) following a sorption-desorption cycle of five fluids (benzene, toluene, chloroform, methylene chloride, and carbon disulfide) in amorphous PEEK was determined by wideangle x-ray scattering (WAXS). The SIC crystal structure was compared with that produced by thermal methods, both those formed at low temperature by heating the amorphous material 10-20°C above Tg or by cooling from the melt. Although smaller in size, the SIC crystals are tighter and more organized than those produced thermally. The WAXS data indicates that all five fluids produce approximately 35% crystallinity in PEEK. Gravimetric data suggest that a low-density region, consisting of either microvoids or highly disordered amorphous region, surrounds the crystals.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1992.090300304
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  • 6
    Electronic Resource
    Electronic Resource
    The absorption of organic liquids in poly(aryl-ether-ether-ketone) [PEEK] (1991)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 29 (1991), S. 1533-1539 
    Details
    ISSN: 0887-6266
    Keywords: poly(aryl-ether-ether-ketone) (PEEK),sorption and diffusion of organic liquids in ; diffusion of organic liquids in PEEK ; absorption and desorption of organic liquids in PEEK ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The absorption and subsequent desorption of benzene, toluene, carbon disulfide, and chloroform in amorphous and 27% crystalline poly (aryl-ether-ether-ketone) (PEEK) were determined. At 35°C, the equilibrium weight gain (solubility) of benzene, toluene, chloroform, and CS2 are 23.5, 19.8, 51.2, and 21.2 wt%, respectively. The initial weight gain is linear with root-time and pseudodiffusion constants for absorption into amorphous PEEK ranging from 0.35 to 9.85 x 10-12m2/s were calculated. The desorption processes are two-step and are controlled by the Tg of the penetrant-resin mixture. The rate of diffussion into the crystalline material is extremely slow; crystalline PEEK reaches saturation (12.5 wt%) after immersion in CS2 (35°C) for several hundred hours but, even after 1300 h immersion, the other fluids do not reach saturation.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1991.090291210
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  • 7
    Electronic Resource
    Electronic Resource
    Thermooxidative Beständigkeit von plastifiziertem, mit erbium-Diphthalocyanin modifiziertem Poly(vinylchlorid) (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 225-228 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: By means of thermogravimetry in oxygen the effect of Er3+ diphthalocyanine on the thermooxidative stability of plasticized poly(vinyl chloride) has been investigated. The polymer modified by erbium diphthalocyanine exhibits higher thermal stability than the original polymer. The stabilizing action of Er3+ diphthalocyanine has been compared with that of Co2+ and Cu2+ phthalocyanines, respectively, and with metal porphyrins.
    Notes: Mittels Thermogravimetrie im Luftsauerstoffstrom wurde der Einfluß von Er3+-Diphthalocyanin auf die thermooxidative Beständigkeit von plastifiziertem Poly(vinylchlorid) untersucht. Das mit Erbium-Diphthalocyanin modifizierte Polymer weist eine höhre Thermostabilität als das Ausgangspolymer auf. Die stabilisierende Wirkung von Er3+-Diphthalocyanin wurde mit der von industriellen Co2+- und Cu2+-Phthalocyaninen sowie von Metallporphyrinen verglichen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420509
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  • 8
    Electronic Resource
    Electronic Resource
    The Chemistry of Selenium Trioxide (1963)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 2 (1963), S. 691-692 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.196306913
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Frage der Existenz einer Peroxoschwefligen Säure H2SO4 und einer Peroxoselenigen Säure H2SeO4 (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 92-97 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The sulfuric-acid isomer peroxosulfurous acid, H2SIVO4, and its derivatives are rearranged to the much more stable sulfuric acid after their intermediate formation in the course of different reactions. Peroxoselenous acid, H2SeIVO4, on the other hand, may be prepared from SeO2 or H2SeO3 and H2O2.
    Notes: Die zur Schwefelsäure isomere Peroxoschweflige Säure H2SIVO4, und ihre Derivate lagern sich nach ihrer Bildung bei verschiedenen Umsetzungen so rasch in die erheblich stabilere Schwefelsäure um, daß sie nicht isoliert werden können. Demgegenüber kann die peroxoselenige Säure H2SeIVO4, wenn auch noch nicht in reiner Form, aus SeO2 bzw. H2SeO3, und H2O2, dargestellt werden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643310114
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  • 10
    Electronic Resource
    Electronic Resource
    Peroxomonoselensäure H2SeO5 (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 330 (1964), S. 329-332 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Peroxomonoselenic acid, H2SeO5, may be prepared in equilibria with hydrogenperoxide and selenic acid from H2O2 and SeO3, H2O2 and H2SeO4 or Na2O2 and H2SeO4. The pure compound (thermally stable only below 0°) is synthesized by perhydrolysis of chloroselenic acid with 100% hydrogen peroxide. In slightly acid medium bromide and iodide are immediately oxydized by peroxomonoselenic acid.
    Notes: Im Gleichgewicht mit Wasserstoffperoxid und Selensäure kann Peroxomonoselensäure H2SeO5 aus H2O2 und SeO3, H2O2 und H2SeO4 bzw. Na2O2 und H2SeO4 dargestellt werden. In Substanz (nur bis etwa 0° thermisch beständig) ist sie durch Perhydrolyse von Chloroselensäure mit 100proz. H2O2 zugänglich. Sie oxydiert in schwach saurer wäßriger Lösung im Gegensatz zu H2O2 Bromid und Jodid sofort zu den freien Halogenen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643300514
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