Authors:
Alfréd MenyhárdLaboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3. H. ép. I, Budapest H-1111, Hungary
Hungarian Academy of Sciences, Chemical Research Centre, Institute of Environmental and Material Chemistry, Pusztaszeri út 59-67, Budapest H-1025, Hungary

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Gábor DoraLaboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3. H. ép. I, Budapest H-1111, Hungary
Hungarian Academy of Sciences, Chemical Research Centre, Institute of Environmental and Material Chemistry, Pusztaszeri út 59-67, Budapest H-1025, Hungary

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Zsuzsanna HorváthLaboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3. H. ép. I, Budapest H-1111, Hungary
Hungarian Academy of Sciences, Chemical Research Centre, Institute of Environmental and Material Chemistry, Pusztaszeri út 59-67, Budapest H-1025, Hungary

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Gábor FaludiLaboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3. H. ép. I, Budapest H-1111, Hungary
Hungarian Academy of Sciences, Chemical Research Centre, Institute of Environmental and Material Chemistry, Pusztaszeri út 59-67, Budapest H-1025, Hungary

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József VargaLaboratory of Plastics and Rubber Technology, Department of Physical Chemistry and Materials Science, Budapest University of Technology and Economics, Műegyetem rkp. 3. H. ép. I, Budapest H-1111, Hungary
Hungarian Academy of Sciences, Chemical Research Centre, Institute of Environmental and Material Chemistry, Pusztaszeri út 59-67, Budapest H-1025, Hungary

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Abstract

Crystallization kinetics of β-nucleated isotactic polypropylene (β-iPP) under isothermal conditions were investigated by differential scanning calorimetry. iPP was nucleated by a trisamide derivative, namely tris-2,3-dimethyl-hexylamide of trimesic acid (TATA). In the presence of TATA possessing dual nucleating ability, the formation of the α- and β-form occurs simultaneously. An isothermal stepwise crystallization method is suggested in this study, which can separate the crystallization process of β- and α-iPP and consequently their crystallization kinetics can be evaluated separately. The results indicated that the mechanism of crystallization changes in temperature especially in the vicinity of the upper critical temperature of the formation of the β-phase. In addition, it was found that the ratio of the growth rates of β- and α-modification determines the characteristics of crystallization and influences the apparent rate constant of crystallization of both polymorphs.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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