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  • American Physical Society  (23)
  • Wiley-Blackwell  (14)
  • 1980-1984  (37)
  • 1
    Electronic Resource
    Electronic Resource
    Grafting onto wool. XIV. Graft copolymerization of vinyl monomers by use of Mn(AcAc)3 as an initiator (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 26 (1981), S. 3797-3804 
    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: Ethyl acrylate (EA), butyl acrylate (BA), and vinyl acetate (VAc) have been graft copolymerized onto Himachali wool fiber in an aqueous medium by using Mn(AcAc)3 as an initiator. Graft copolymerization was studied at 45°, 55°, 65° and 75°C for various reaction periods. Percentage of grafting and percent efficiency were determined as functions of concentration of monomer, concentation of initiator, concentration of nitric acid, time, and temperature. Several grafting experiments were carried out in the presence of various additives which included: (i) pyridine and (ii) Et3 N. EA, BA, and VAc were found to differ in reactivity towards grafting and followed the order: EA 〉 BA 〉 VAc.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1981.070261126
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  • 2
    Electronic Resource
    Electronic Resource
    Crystallinity of pure and nucleated PET (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 28 (1983), S. 2177-2186 
    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: Pure and Al(OH)3-containing PET films were prepared, quenched, and subsequently annealed under identical conditions. The level of crystallinity of the films was determined by three methods: density measurements, X-ray crystallinity determination, and measurements by IR of the relative concentration of trans —O—C—C—O— conformation in the polymer. For pure PET it was found that the percentage crystallinity measured in annealed samples by X-ray and IR is about the same. The density measurements agree with these techniques only when the amorphous density is taken as 1.348 g/cm3. In the case of quenched pure PET, a 7% correction to the concentration of trans conformation must be introduced (in agreement with recent literature) to fit the IR results to the X-ray and density data. Annealed PET containing Al(OH)3 crystallizes to about the same level as annealed pure PET. The agreement between X-ray and IR data is reasonably good. In the quenched PET/Al(OH)3 there exists a higher level of trans conformation (enhanced order), probably resulting from adsorption of relatively extended PET chain segments on the surface of the hydroxide particles. These extended units may possibly serve as nucleation sites for PET crystallization upon cooling from the melt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1983.070280705
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of selective oxidation of toluene and methanol over supported V2O5-alkalimetal sulfates (1981)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 27 (1981), S. 41-51 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The catalytic activity of supported V2O5-alkalimetal sulfate catalysts was studied by oxidizing toluene and methanol to aldehydes and water. An isothermal, fixed-bed reactor, operating at atmospheric pressure and temperatures of 320, 345, and 370°C, was used to obtain the reaction rate data for different partial pressure combinations of the reaction components of these two systems. Three different approaches, Langmuir-Hinshelwood, Hinshelwood, and two-step redox mechanisms, have been used to study the kinetics, with statistical data interpretation.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690270108
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  • 4
    Electronic Resource
    Electronic Resource
    Selective oxidation of n-butanol over supported V2O5-K2SO4 catalyst: Experiments and models (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 855-857 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280530
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  • 5
    Electronic Resource
    Electronic Resource
    Letters to the editor (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 175-175 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280130
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  • 6
    Electronic Resource
    Electronic Resource
    Interpretive nonlinear viscoelasticity: Dynamic properties of nylon 6, nylon 66, and nylon 12 fibers (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 25 (1980), S. 2063-2104 
    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: Nonlinear response of nylon 6, nylon 66, and nylon 12 fibers to sinusoidal straining under relatively large strain amplitude is analyzed in terms of the changes in properties during the straining, i.e., the change in modulus, change in internal friction and change in structure which involves energy release or absorption in straining. Modulus generally increases with strain but it decreases with increase of strain amplitude, the effect of strain amplitude being largest with nylon 6 and smallest with nylon 66. Mechanical loss increase with the increase of strain amplitudes in nonlinear manner, and the magnitude of change is largest with nylon 66 and smallest with nylon 6. During the extension phase, structural change occurring in nylon 6 is predominantly an increase in order or orientation while that with nylon 66 is crack opening or cavitation. Various aspects of the experiments and analysis of the data are described in detail.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1980.070250920
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  • 7
    Electronic Resource
    Electronic Resource
    Grafting onto wool. XX. Graft copolymerization of vinyl monomers by use of redox initiators. Comparison of monomer reactivities (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 1321-1326 
    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: Methyl methacrylate (MMA) and ethylacrylate (EA) have been graft copolymerized onto Himachali wool in aqueous medium by using a ferrous ammonium sulfate-hydrogen peroxide (FAS—H2O2) system as redox initiator. Percentage of grafting has been determined as functions of concentration of monomer, molar ratio of [FAS]/[H2O2], time and temperature. Percentage of grafting is found to depend upon the molar ratio of [FAS]/[H2O2]. An attempt has been made to compare the reactivities of the acceptor monomer (MMA and EA) with that of the donor monomer (VAc) toward grafting onto wool.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270421
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  • 8
    Electronic Resource
    Electronic Resource
    Polychalkogenoanionen der Übergangsmetalle. IV. Neuartige Redoxkondensationsreaktionen von MoO2S22- in H2O und zur Darstellung von Di-μ-sulfido-Komplexen von Mov (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 472 (1981), S. 69-74 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Polychalcogenoanions of the Transition Metals. IV. Novel Redox Condensation Reactions of MoO2S22- in H2O and Preparation of Di-μ-sulfido Complexes of MovMoVIO2S22- polymerizes after protonation in aqueous solution under physiological conditions forming polynuclear complexes with η-S22- ligands (for example [Mo2vO2S2(S2)2]2-). From the solution other di-μ-sulfido Mov complexes as for example [Mo2O2S2(Et2dtc)2] can be easily obtained.
    Notes: MoVIO2S22- kondensiert nach Protonierung im wäßrigen Medium unter physiologischen Bedingungen (bei pH-Werten von etwa 7) zu mehrkernigen schwefelverbrückten Komplexen mit η-S22--Liganden (wie z. B. [Mo2VO2S2(S2)2]2-) bei einem ebenfalls ablaufenden intramolekularem Redoxprozeß. Aus der Lösung lassen sich auch andere Di-μ-sulfido-MoV-Komplexe wie z. B. [Mo2O2S2(Et2dtc)2] isolieren.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814720107
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  • 9
    Electronic Resource
    Electronic Resource
    Ternary complexes of some rare earth metal ions with 1,2-diaminocyclohexanetetraacetic acid and hydroxy acids (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 462 (1980), S. 226-230 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ternäre Komplexe einiger Seltener Erd-Ionen mit 1,2-Diaminohexantetraessigsäure und Hydroxysäuren1:1:1-Systeme aus Seltenen Erd-Ionen, CDTA und Hydroxysäuren wurden pH-metrisch untersucht. Die Bildungskonstanten (log KMLL′) und freien Bildungsenergien (ΔF°) der Komplexe wurden berechnet. Die Stabilitätsreihe in bezug auf die Metallionen ist: La 〈 Nd 〈 Gd 〈 Dyrin bezug auf die Hydroxysäuren: Weinsäure 〈 Apfelsäure.
    Notes: 1:1:1, Rare earth ions-CDTA-hydroxy acids ternary systems have been studied pH-metrically. The formation constants (log KMLL′) and free energies of formation (ΔF°) of the resulting octa-coordinated metal ion mixed-ligand complexes have been calculated. The order of stability in terms of metal ions has been reported as: La 〈 Pr 〈 Nd 〈 Gd 〈 Dy and in terms of hydroxy acids as: TAR 〈 MAL.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804620126
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  • 10
    Electronic Resource
    Electronic Resource
    Über K2MoO3S, Darstellung eines reinen Monothiomolybdats (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 468 (1980), S. 193-196 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: K2MoO3S, Preparation of a Pure MonothiomolybdateA preparation method for a pure monothiomolybdate (K2MoO3S) is reported for the first time. The compound is characterized spectroscopically (IR, Raman) and by a powder pattern.
    Notes: Es wird erstmals eine Methode zur Darstellung eines reinen Monothiomolybdats (K2MoO3S) angegeben. Die Verbindung wird spektroskopisch (IR-Raman) und röntgenographisch charakterisiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804680124
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