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  • 1
    Electronic Resource
    Electronic Resource
    Configurational enthalpy of polystyrene (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 5 (1967), S. 705-710 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Recent precision measurements of the heats of combustion of atactic and isotactic polystyrene permit an unequivocal calculation of the enthalpy difference in the bulk amorphous forms of the two isomers of this polymer. Contributions to this quantity arise mainly from the differences in nonbonded interactions in the two configurations but may also contain terms relating to higher energy conformations and to intermolecular interactions. The thermochemical and NMR data of specific polymers and of simple molecules are discussed in a comparison with model compound calculations. The thermochemical method has potentially important applications in studying molecular interactions in stereoregular polymers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.160050407
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  • 2
    Electronic Resource
    Electronic Resource
    A carboxylic rubber from polyethylene (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 24 (1979), S. 595-598 
    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: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1979.070240224
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  • 3
    Electronic Resource
    Electronic Resource
    Thermodynamic properties of some monomeric compounds in the standard ideal gas stateN. C. L. communication No. 1371. (1970)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 8 (1970), S. 679-687 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Thermodynamic functions of ten monomeric compounds have been calculated for three temperatures by the statistical method using molecular structural data and vibrational assignments. The ideal gas state entropies at 298.15°K are: maleic anhydride, 71.9; β-propiolactone, 69.1; vinylene carbonate, 70.1; cyclopentadiene, 65.3; diketene, 72.3; cyclopropene, 58.7, vinyl fluoride, 60.4; ethyleneimine, 62.8; butatriene, 71.7; and carbon suboxide, 66.0 cal./deg-mole. The standard free energies and equilibrium constants of formation are also derived by using mostly the published data on the heats of formation of these monomers.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1970.160080502
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  • 4
    Electronic Resource
    Electronic Resource
    Polymer Purification (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 10 (1966), S. 1806-1806 
    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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1966.070101119
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  • 5
    Electronic Resource
    Electronic Resource
    Reactivity constants in copolymerization (1956)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 19 (1956), S. 582-583 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1956.120199319
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  • 6
    Electronic Resource
    Electronic Resource
    Chain transfer in solution polymerization. II. Vinyl acetate (1956)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 22 (1956), S. 508-508 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1956.1202210216
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  • 7
    Electronic Resource
    Electronic Resource
    The free radical polymerization of maleic anhydride (1962)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 53 (1962), S. 33-45 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Homopolymerisation von flüssigem Maleinsäureanhydrid bei 74.5°C wird kalorimetrisch untersucht. Die Polymerisationswärme wird zu 14±1 kcal/Mol bestimmt. Die Polymerisation in Substanz ist charakterisiert durch die hohe Kettenübertragung mit den kinetischen Konstanten CM = 0,07 und CI = 2,63. Das Verhältnis δ = kt1/2/kp ist endlich (∼109) und vergleichbar mit Werten, die man bei anderen reaktionsträgen Monomeren findet. Das zeigt, daß die allgemein angenommene Voraussetzung kp oder k22 = 0 bei kinetischen Untersuchungen der Copolymerisation dieses Monomeren unhaltbar ist. Bei der Copolymerisation von Maleinsäureanhydrid mit Allylchlorid erhält man für das erstgenannte Monomere eine große relative Reaktivität, nämlich ∼ 0,2; das Molverhältnis der Komponenten im Copolymeren überschreitet deutlich den Wert 0,5 für Maleinsäureanhydrid, was die Annahme einer Selbstaddition bekräftigt.
    Notes: The homopolymerization of liquid maleic anhydride at 74.5°C. wird studied calorimetrically. The molar heat of polymerization is determined as 14±1 kcal./mole. The bulk polymerization is characterised by the high chain-transfer, with kinetic constants CM and CI of the order 0.07 and 2.63 respectively. The ratio δ= kt1/2/kp is finite (∼109) and comparable to other sluggish monomers which shows that the widely accepted assumption, kp or k22 = 0 in kinetic interpretations of copolymerization of this monomer is untenable. A copolymerization of maleic anhydride with allyl chloride gives a high monomer reactivity ratio of about 0.2 for the former and the copolymer composition well exceeded 0.5 in respect of maleic anhydride mole-fraction, confirming self-addition.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1962.020530105
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  • 8
    Electronic Resource
    Electronic Resource
    Heats of polymeric reactions. IIIN.C.L. Communication No. 578.. Methacrylic, acrylic, and vinyl esters, and some alternating copolymerization systems (1963)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 66 (1963), S. 114-125 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisationswärme von verschiedenen Methacrylsäure-, Acrylsäure- und Vinylestern wurde in einem isothermen Destillationskalorimeter bei 74,5°C bestimmt.Bei den Methacrylsäureestern scheinen die Kettenlänge und andere strukturelle Besonderheiten der Estergruppe einen zwar geringen aber immerhin deutlichen Einfluß auf die Bindungsenergie und somit auf die Polymerisationswärme zu haben.Dieser Einfluß ist bei Acrylsäure- und Vinylestern nicht zu bemerken.Mit zunehmender Kettenlänge des Esters findet man einen zunehmenden Anstieg der Geraden der Anfangspolymerisationsgeschwindigkeit/(Initiator)1/2, was auf die Abschirmung des wachsenden freien Radikals durch die Estergruppe zurückgeführt werden kann, welche die Abbruchsreaktion begünstigt.Im alternierenden Copolymerisationssystem ist die mittlere Polymerisationswärme der abwechselnden Wachstumsreaktion bedeutend kleiner als die der beiden Homopolymerisationsreaktionen. Daher ist die Zusammensetzung der Copolymeren 1:1-molar, und auch die hohe Copolymerisationsgeschwindigkeit ist darauf zurückzuführen.
    Notes: Heats of polymerization of several methacrylic, acrylic and vinyl esters were measured on an isothermal distillation calorimeter working at 74.5°C. Size and other structural variations in the ester group of methacrylic esters appear to have small but distinct effect on the energies of the bonds involved in polymerization and hence on the heat of polymerization. The esters in the other two series are less susceptible to such influence. In methacrylic esters the increase in ester length caused a progressive increase in the slope of the (linear) plots of initial rates of polymerization vs. (initiator)1/2, which may be attributed to the shielding effect of the ester group on the propagating free radical, affecting termination more than the propagation.In the alternating copolymerization systems the average heat of cross propagation was found to be considerably higher than the average of the two heats of self addition, accounting for the essentially 1:1-molar composition of the copolymer and the high rates of copolymerization.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1963.020660111
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  • 9
    Electronic Resource
    Electronic Resource
    Calorimetric determination of heat of polymerization of maleimideNCL Communication No. 520. (1963)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 62 (1963), S. 140-147 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisationswärme von Maleinimid, einem neuen reaktiven Monomeren, wurde in einem isothermen Destillationskalorimeter bei 74,5°C bestimmt. Ein Wert von 21,O ± 0,5kcal/Mol wurde für -ΔH88, in polaren Losungsmitteln wie Acetonitril und Dimethylform-amid erhalten; hierin hat die intermolekulare Assoziation des Monomeren (und des Polymeren) ein Minimum.Der Wert wird in Chlorbenzol, einem relativ unpolaren Medium, erheblich herabgesetzt (urn ca. 5 kcal). Die hohe Polymerisationsenthalpie des Maleininüds erklärt seine bemerkenswerte Polymerisationsfähigkeit; sie wird teilweise zurückgefiihrt auf Veränderungen der inneren Spannung des Monomerrings, welche die Polymerisation begleiten.
    Notes: The heat of polymerization of maleimide, a new rea,tive monomer was measured in an isothermal distillation calorimeter working a t 74.5°C. A value of 21.0 ± 0.5 kcal./mole has been obtained as the -ΔH88 in polar solvents, acetonitrile and dimethyl formamide in which the intermolecular association for the monomer (and polymer) has a minimum.This value is appreciably lowered (by about 5 kcal) in chlorobenzene, a relatively nonpolar medium. The high enthalpy of polymerization of maleimide accounts for its remarkable polymerizability and is partly attributed to the changes in the internal strain of the monomer ring accompanying polymerization.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1963.020620116
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  • 10
    Electronic Resource
    Electronic Resource
    A proposed osmotic balance (1959)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 35 (1959), S. 271-272 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1959.1203512824
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