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Interactions of low molecular weight compounds with solid polymers

✍ Scribed by Kryszewski, Marian ;Skorko, Marta

Publisher
Wiley (John Wiley & Sons)
Year
1963
Tongue
English
Weight
420 KB
Volume
1
Category
Article
ISSN
0449-2951

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✦ Synopsis

Abstract

In order to establish the kind of dispersion of low molecular weight compounds in solid polymers the absorption spectra of their solutions in liquid monomer and solid polymer were investigated. On this basis the oscillator strengths were calculated for solutions of the light stabilizers, 5‐chloro‐2‐hydroxybenzophenone phenyl salicylate, and 1‐naphthylamine in monomer and polymer. The change of oscillator strength is related to the change of dispersion character. Styrene and polystyrene were used as solvents. The hydroxybenzophenone and salicylate show molecular dispersion in the case of thermal polymerization, and are slightly incorporated into the chains during the initiated polymerization. Naphthylamine is incorporated into the chains in a higher degree. Besides it was stated that the oscillator strength is almost independent of conversion degree. If the incorporation of investigated substance into the chains takes place it occurs during the entire polymerization process.

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