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  • 1975-1979  (2)
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  • 1
    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: The present investigation was undertaken to study some block copolymers. These were synthesized by condensation reactions between homopolymers having monomeric units of type A and α- or α,ω-hydroxyl groups, and such having monomeric units of type B and α- or α,ω-oxychloroformyl groups. Polymers used in this work are polyisoprenes and polybutadienes with α- or α,ω-hydroxyl groups and polystyrenes with α- or α,ω-oxychloroformyl groups. The blocks are linked together by a carbonate bond formed by the hydroxyl and oxychloroformyl end groups. The structures of these copolymers are confirmed by IR and NMR analyses as well as by determination of the number average molecular weights.
    Notes: La présente étude a pour but la réalisation de copolymères séquencés. Ces derniers sont synthétisés par réaction de condensation entre des homopolymères α- ou α,ω-hydroxylés de motif monomère A et des homopolymères α- ou α,ω-oxychloroformylés de motif monomère B. Les polymères utilisés dans cette étude sont des polyisoprènes, polybutadiènes α- ou α,ω-hydroxylés et des polystyrènes α- ou α,ω-oxychloroformylés. Les séquences des copolymères sont liées entre elles par des liaisons du type carbonate résultant de la réaction des fonctions terminales hydroxyle et oxychloroformyle. La structure de ces copolymères est confirmée par spectroscopie de NMR et IR et par des measures de masses moléculaires moyenne en nombre.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Quinine was linked to 2-chlorocarbonyloxyethyl methacrylate (6) by a carbonate bound. This monomer 7 was characterized by usual spectroscopic methods and polymerized by a radical process. The resultant polymer 4 was biologically tested by toxicity and immunology studies on rabbit. Polymer 4 was analyzed by IR and NMR spectroscopy and compared with the polymer obtained by chemical modification of poly(2-hydroxyethyl methacrylate) (1).
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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