ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Publication Date: 1977-06-01
    Print ISSN: 0372-820X
    Electronic ISSN: 1435-1536
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thin Solid Films 68 (1980), S. 67-76 
    ISSN: 0040-6090
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 255 (1977), S. 521-531 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Heptadeca-2,4-diin-1-ol und Heptadeca-2,4-diin-1-säure wurden dargestellt und das Polymerisationsverhalten im festen Zustand untersucht. Beide Verbindungen polymerisieren thermisch und photochemisch bei Bestrahlung mit UV-Licht und bilden dabei über eine 1,4-Addition an die konjugierten Dreifachbindungen Polymere mit einer Hauptkette aus konjugierten Doppel- und Dreifachbindungen. Die Photoantwortspektren ähneln den Absorptionsspektren und Maxima der Photoreaktivität liegen in dem Bereich der Absorption der konjugierten Dreifachbindungen der Monomeren. Beide Verbindungen lassen sich an der Grenzfläche Gas-Wasser eines Langmuir-Troges spreiten. Die Monoschichten konnten nach der Langmuir-Blodgett-Technik auf Quarz- oder Metallunterlagen überführt und auf these Weise Multischichten der Monomeren erzeugt wurden. Diese Multischichten wurden durch Bestrahlung mit energiereicher Strahlung polymerisiert und dadurch Multischichten des kristallinen, geordneten Polymeren erhalten. Die Multischichten des Polymeren wurden mit Elektronenbeugung und IR-Spektroskopie untersucht. Die Polymeren hatten die gleiche chemische Struktur wie die aus den Kristallen der Monomeren erhaltenen. Auf der Grundlage der bekannten chemischen Struktur der Polymeren, der Beugungs- und spektroskopischen Daten und aus der Tatsache, daß sich Monoschichten erhalten lassen, wurde ein Modell für die Struktur der Multischichten der Monomeren und der Polymeren entwickelt.
    Notes: Summary Heptadeca-2,4-diine-1-ol and Heptadeca-2,4-diine-1-acid were synthesized and their polymerization behaviour in the solid state was investigated. Both compounds polymerize thermally below the melting point and photochemically under the action of uv-light to form polymers via 1,4-addition to the conjugated triple bonds with a backbone of conjugated double-and triple-bonds. The photoresponse spectra resemble the absorption spectra exhibiting maxima of photoreactivity in the absorption band of the conjugated triple bonds of the monomers. Both compounds satisfy the general criteria of formation of monomeric monolayer films at the air-water-interface of a Langmuir-trough. The monolayers could be transfered onto quartz or metal substrates by the Langmuir-Blodgett-technique and multilayers of the monomers could be built up. These multilayers were polymerized by exposure to high energy-radiation and thus, multilayers of the crystalline, well ordered polymer were obtained. The polymer multilayers were studied by electron diffraction and ir-spectroscopy. The polymer has the same structure as the one obtained by solid-state polymerization of the crystals. A model of the structure of the monomeric and polymeric multilayers is proposed, which is based on the combined evidences from the known chemical structure, the diffraction and spectroscopic data and the formation of the layered structure.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 28 (1988), S. 1600-1606 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: The observation of a novel phenomenon is reported whereby the processing history of a nylon 6 leads to a memory effect which in turn affects its crystallization rate from the molten state. Differential scanning calorimetry (DSC) and optical microscopy are the primary techniques used to demonstrate that the melt-crystallization behavior of nylon 6 can be controlled by processing variables. Characterization data is presented to show that obvious parameters such as molecular weight, impurities, monomer and oligomers, etc. are not responsible for the observed changes in crystallization behavior upon processing. It is shown that the mechanical properties and/or morphology of a nylon 6 article can depend upon the processing technique (e.g., compression or injection molding) as well as the processing history of the nylon 6 resin itself.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 17 (1979), S. 655-662 
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The polymerization of the cyclic tetradiyne monomer, [—(CH2) 2—C≡C—C≡C—(CH2)2—]4, containing interstitial chloroform has been investigated using Raman and Fourier-transform infrared spectroscopy and x-ray diffraction techniques. A loss of crystallographic register between chains occurs during the polymerization reaction, although crystalline order in the chain-axis projection is retained. These studies indicate that 50 Mrad of 60Co γ-ray irradiation produces 1,4-addition polymerization at most of the diacetylene functionalities. Unreacted diacetylene groups are present primarily, although not completely, in soluble oligomeric material. Infrared spectroscopy indicates that this low molecular weight material has a butatriene (cumulene) backbone structure rather than the acetylenic structure of the insoluble polymer.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...