Library

feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
Filter
  • Electronic Resource  (2)
  • Chemistry  (2)
Material
  • Electronic Resource  (2)
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 2 (1947), S. 626-631 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The same point in the space cannot be occupied simultaneously by two molecules. In a solution of rigid rodlike macromolecules, each molecule prevents its neighbors from occupying certain positions, the whole of which form the forbidden angle. Calculation shows that in the case of rigid, filiform molecules, this angle is large even at very low concentrations. Isotropy is not possible at moderate concentrations. The consideration of the forbidden angle is necessary in the study of viscosity, osmotic pressure, flow birefringence, sedimentation, and molecular light scattering. In the solid state, the substance can be put under great tension, and the return to the normal state is extremely slow. This tension accounts for the abnormal solubility of disordered high polymers.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 6 (1951), S. 149-156 
    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: Der früher gerechtfertigte Standpunkt, nach dem die anorganischen Kolloide und die organischen Makromoleküle eine verschiedenartige Struktur haben sollen, ist heutzutage nicht mehr aufrecht zu halten. Die beiden Stoffklassen mit hohem Molekulargewicht unterscheiden sich nur durch sekundäre Merkmale, und die Vorstellungen und Begriffe der physikalischen Chemie der Makromoleküle sind direkt auf die anorganischen Kolloide anwendbar, soweit sie durch Kondensation entstanden sind.
    Notes: Les colloïdes minéraux et les macromolécules organiques sont le plus souvent considérés comme ayant une constitution différente. Ce point de vue qui était autrefois justifié, n'est plus acceptable maintenant. Les deux classes de produits à très haut poids moléculaire ne diffèrent que par des caractères secondaires, et les conceptions qui ont assuré le développement de la physicochimie des macromolécules sont applicables directement aux colloïdes minéraux, formés eux aussi par condensation.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...