ZUSAMMENFASSUNG:Cellulose-und Amylose-tricarbanilate sind isomere Ketten, die sich nur in ihrer Bindungsart unterscheiden. Ihre Strukturunterschiede werden mit Hilfe von Lichtstreuungsund Viekositatsmessungen in verdiinnten Acetonlosungen n&er untersucht.Die Abhiingigkeit der Tragheitsradien vom Molekulargewicht laBt sich empirisch durch die Beziehung = (R:) (1 + 134/105 z . . . .), wobei der quadratische Trlgheitsradius eines idealen Knauels ist. Es wird eine Beziehung zwischen dem Exponenten E und dem Parameter z abgeleitet, der den E i d u B des Losungsmittels aufdie Struktur beschreibt. Damit ist es moglich, z und zu berechnen. Aus = CM l+C (cellulose tricarbanilate: E = 0,26; amylose tricarbanilate: E = 0,32). According to the present theories the radius of gyration of a real coil is given by . Furthermore, the internal restricted rotation of the chain links 358 Vergleichende Strukturanalyse von Cellulose-und Amylose-tricarbanilaten in Losung can be calculated from (Ro2). Cellulose and amylose tricarbanilates in an indifferent solvent show approximatively the same restricted rotation of the chain links, although the radii of gyration of cellulose are 50% greater than those of amylose. It is demonstrated that this is due to the differences between a-and P-linkages. The relation between the viscosity numbers and the molecular weight is well represented by the theory of KURATA and...
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