✍ Scribed by Schnabel, Von Wolfram ;Schamberg, Eckehard
No coin nor oath required. For personal study only.
Linear poly(viny1 acetate) possessing an approximately random molecular weight distribution has been y-irradiated in acetone solution a t various concentrations. It could be shown by light scattering and viscosity measurements, that a t concentrations below the critical concentration for gel formation the polymer is crosslinked to a certain extent besides the predominant degradation of the main chain. I n accordance with the previously developed theory of simultaneous crosslinking and degradation, the ratio of the specific degradation and crosslinking densities po/qo increases with decreasing polymer concentration and surpasses the value 2 a t the critical concentration.
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## Abstract Polyvinylpyrollidon und Polyacrylamid, die in wäßriger Lösung einzeln unter Gamma‐Bestrahlung vernetzen, bilden in derselben Lösung ein gemeinsames Netzwerk. Allgemein sind für die Netzwerke aus zwei Polymeren diejenigen Grenzstrukturen denkbar, in denen zwei Homo‐Netzwerke der beiden P