Isothermal-crystallization Kinetics and Spherulite Growth of Aliphatic Polyketone/Polyamide-6 Blends

In this research, the morphologies, isothermal-crystallization kinetics, and spherulite growth of aliphatic polyketone/polyamide-6 blends were studied. A single glass-transition temperature （Tg） was determined, and the composition dependence of Tg for these blends was well described by the Kwei equa...

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Published inChinese journal of polymer science Vol. 35; no. 6; pp. 782 - 792
Main Authors Zhang, He-xin, Huh, Seong-Rok, Ko, Eun-Bin, Park, Byung-Sik, Yoon, Keun-Byoung
Format Journal Article
LanguageEnglish
Published Beijing Chinese Chemical Society and Institute of Chemistry, CAS 01.06.2017
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Crystal growth
Industrial Chemistry/Chemical Engineering
Polyamide resins
Polymer Sciences
Polyamide-6
Polyketone
Crystallization kinetics
Spherulite growth
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Summary:In this research, the morphologies, isothermal-crystallization kinetics, and spherulite growth of aliphatic polyketone/polyamide-6 blends were studied. A single glass-transition temperature （Tg） was determined, and the composition dependence of Tg for these blends was well described by the Kwei equation. The strong intermolecular interaction between the two polymer components was confirmed by melting-point depression. The isothermal-crystallization kinetics were analyzed on the basis of the Avrami approach. A linear increase in the radii of the spherulites with time was observed for all compositions. All the spherulites continued to grow at nearly identical growth rates. With increasing polyamide-6 content, the size of the spherulites in the polyketone/polyamide-6 blends gradually decreased, and the number of spherulites in the blends increased.
Bibliography:Polyketone; Polyamide-6; Crystallization kinetics; Spherulite growth
In this research, the morphologies, isothermal-crystallization kinetics, and spherulite growth of aliphatic polyketone/polyamide-6 blends were studied. A single glass-transition temperature （Tg） was determined, and the composition dependence of Tg for these blends was well described by the Kwei equation. The strong intermolecular interaction between the two polymer components was confirmed by melting-point depression. The isothermal-crystallization kinetics were analyzed on the basis of the Avrami approach. A linear increase in the radii of the spherulites with time was observed for all compositions. All the spherulites continued to grow at nearly identical growth rates. With increasing polyamide-6 content, the size of the spherulites in the polyketone/polyamide-6 blends gradually decreased, and the number of spherulites in the blends increased.
11-2015/O6
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-017-1936-3