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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 165 (1989), S. 181-196 
    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: Multiblock copolymers involving crystallizable blocks of poly(1-dimethylsilyl-4-dimethylethylenesilyl benzene) and blocks of either polystyrene (PS) or poly(ethyleneoxide) (PEO) were prepared by hydrosilylation reaction between α,ω-difunctional precursor polymers. The organosilicic precursor was fitted at both chain-ends with dimethylsilane functions. The reactive end groups of the PS or PEO precursors were silvinylic functions attached to the polymer chains through chemical groups of the same nature as the monomer unit of the crystallizable block. In this case, and under adequate stoichiometric conditions the hydrosilylation reaction between functional chain ends is possible and yields multiblock copolymers containing 6 to 10 blocks.
    Notes: Des copolymères multiséquencés comportant des séquences cristallisables de poly(diméthylsilyl-1 diméthyléthylènesilyl-4 benzène) et des séquences, soit de polystryrène (PS), soit de poly(oxyéthylène) (POE), ont été préparés par réaction d'hydrosilylation entre polymères précurseurs, α,ω-difonctionnels. Le polymère organosilicique utilisé portait des fonctions diméthylsilane aux deux extrémités de sa chaîne. Les polymères précurseurs PS et POE étaient dotés aux deux extrémités de leur chaîne de fonctions silvinyliques portées par un motif chimique de même nature que celle de l'unité monomère de la séquence organosilicique. Dans des conditions expérimentales adéquates, la réaction d'hydrosilylation conduit alors à des copolymères multiséquencés comportant 6 à 10 séquences.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 110 (1967), S. 173-179 
    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: Es wurde das polymere Produkt untersucht, das durch γ-Bestrahlung der sorgfältig getrckneten, eutektischen Mischungen von Styrol und β-Propiolacton erhalten wurde. Die Mischungen wurden wenige Grade unterhalb ihres Schmelzpunktes in evakuierten und abgeschmolzenen Gefäßen bestrahlt. Es wurden keine Copolymeren erhalten, sondern nur Gemische von Homopolyimeren. Im Falle der γ-Bestrahlung eines festen Gemisches von Acrylnitril und β-Propiolacton ergaben sich jedoch Hinweise, die eine frühere Behauptung, daß unter diesen Bedingungen Copolymere erhalten wurden, unterstützten.
    Notes: A study has been made of the polymeric product obtained by exposure to γ-rays of carefully dried eutectic mixtures of styrene and β-propiolactone which were sealed in vacuum and maintained at a few degrees below the melting point. No copolymer was formed, only a mixture of homopolymers. However, evidence was obtained which supports an earlier claim that a copolymer is formed by γ-irradiation of a solid mixture of acrylonitrile and β-propiolac tone.
    Additional Material: 2 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science: Macromolecular Reviews 3 (1968), S. 1-48 
    ISSN: 0076-2083
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 33 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 14 (1976), S. 1097-1109 
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Spectra of polarized light scattered from model networks of polystyrene swollen by benzene have been measured by optical mixing spectroscopy. Various series of networks of different functionalities and different lengths of the elastic chain elements have been investigated. A theoretical expression for the characteristic time constant of fluctuations has been derived from rubber elasticity theory. An analysis of the experimental results within the framework of this theory allows determination of the frictional constants of the gels.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 4 (1966), S. 995-997 
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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