Über die Strukturaufklärung vernetzter Makromoleküle, insbesondere vernetzter Polyesterharze, mit chemischen Methoden

Dedicated to Professor Paul Schlack on the occasion of his 75th birthdayThe analytical characterization of synthetic fibers has not kept pace with their development and production. Whereas the "second-generation" fibers have already conquered the market, the chemical investigation methods used until now for the three classical fiber polymers of the polyester, polyamide, and polyacrylonitrile types are still frequently unsatisfactory. Though they satisfy the requirements of production supervision and quality control, they do not supply enough information to enable us to understand and to explain the degradation of and damage to the polymers under hydrolytic, thermal, or thermooxidative influences. This report presents methods of chemical analysis that open up new possibilities for investigations of this nature on synthetic fibers. The results reported for commercial products must not be taken as an assessment of quality. They are simply intended to show the diversity to be expected in the chemical properties and to emphasize the practical basis of the chemical analysis of synthetic fibers.

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Chemische Methoden zur Analyse von Netzwerken

Braun

1979

Angew. Makromol. Chem.

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ZUSAM M ENFASSUNG :Die chemische Auklarung der Netzstruktur von polymeren Netzwerken erfordert die definierte Spaltung der Polymerketten mit Hilfe eindeutig verlaufender Reaktionen. Aus Art und Menge der dabei entstehenden Spaltstucke lassen sich Ruckschlusse auf die Netzwerkstruktur ziehen. Die derzeitigen Miiglichkeiten und Grenzen der Analyse von vernetzten Polymeren mit chemischen Methoden werden an Beispielen von vernetzenden Polyreaktionen und der nachtraglichen Vernetzung von Makromolekulen diskutiert. SUMMARY:The chemical investigation of the network structure of crosslinked polymers requires the defined splitting of the polymer chains by inequivocal reactions. From nature and amount of the reaction products conclusions can be drawn on the network structure. The present possibilities and limits of the chemical analysis of crosslinked polymers are discussed on some examples of crosslinking polyreactions and subsequent crosslinking of macromolecules.

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Über die Strukturaufklärung vernetzter Makromoleküle, insbesondere vernetzter Polyesterharze, mit chemischen Methoden

Cited by 27 publications

References 111 publications

Chemische Analytik von Synthesefasern

Chemische Analytik von Synthesefasern

Chemical Analysis of Synthetic Fibers

Chemische Methoden zur Analyse von Netzwerken

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