The influence of pigments with various chemical and structural constitutions on the crystallization process of massdyed polypropylene is investigated. For following and recording the isothermic crystallization of dyed PP-films the IR-absorption technique has been applied. The AVRAMI exponent for dyed P P is in the range between 2.3 to 2.9. The crystallization process of dyed P P is mainly determined by the time-dependent occasional formation of crystal nuclei.
Der EinfluP einiger Farbstoffe auf die Kristallisationskinetik uon PolypropylenDer EinfluB von Pigmenten mit unterschiedlicher chemischer Struktur und Morphologie auf den Kristallisations-prozef3 von massegefarbtem Polypropylen wird untersucht. Die isotherme Kristallisation der gefarbten PP-Filme wird infrarotspektroskopisch verfolgt. Der AVRAMI-Exponent des gefarhten Polypropylens liegt zwischen 2,3 und 2,9. Die Kristallisationskinetik des gefarbten Polymers wird hauptsachlich durch die zeitabhangige zufallige Bildung von Kristallisationskeimen bestimmt. Bamnue neEomopax Kpacumefieii na RunemuEy xpucmoimuaayuu noaunponwlca 3aqa14 oKparueHHoro B Macce nonHnponMneHa. more MeTonoM HH-cneKTpocKonHH m y~a n c~ npoqecc KpacTan-B YpaBHeHmi ABPAMH nemm B npenenax OT 2,3 no 2,9. ICuHeTma ~p~c~a n n~a a q~~ oKparuemoro nommepa onpege-ll3yYeHO BJIHRHUe IlHrMeHTOB pa3JIHYHOrO XHMHYeCKOrO CTPOeHHR H Pa3JIHYHOfi MOpI$OJIOrHH H a npOqeCC KpHCTannH-JIH3aqHH OKpalueHHLdX IIneHOK IIOJIHnpOnHJIeHa B W30TePMH9eCKHX yCJIOBHRX. HaBneHHOe 3HaYeHHe 3KCnOHeHTa JIReTCR, B OCHOBHOM, 3aBHCRIQHM OT BpeMeHEi CJlyYafiHbIM 06pa30BaHHeM 3apOgbItUeB KpHCTaJlJlH3aqHH.
Changes occurring in the fine structure of polyamide fibres caused by bulk and bath dyeing with acid and metallized dyes were established. It was found that the dyeing method and kindof used dye affect the crystallinity crystallite sizes and internal orientation of the fibres.
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