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Phase behavior, nucleation and optical properties of the binary system isotactic polypropylene/N,N',N''-tris-isopentyl-1,3,5-benzene-tricarboxamide

Titelangaben

Kristiansen, Per Magnus ; Greß, Anja ; Smith, Paul ; Hanft, Doris ; Schmidt, Hans-Werner:
Phase behavior, nucleation and optical properties of the binary system isotactic polypropylene/N,N',N''-tris-isopentyl-1,3,5-benzene-tricarboxamide.
In: Polymer. Bd. 47 (2006) Heft 1 . - S. 249-253.
ISSN 0032-3861
DOI: https://doi.org/10.1016/j.polymer.2005.08.053

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

The phase behavior of the binary system consisting of previous termisotactic polypropylenenext term (i-PP) and N,N′,N″-tris-isopentyl-1,3,5-benzene-tricarboxamide (1)—a selected member of a class of novel, versatile 'designer' nucleating/clarifying agents—was investigated over the entire additive concentration range by means of differential scanning calorimetry (DSC) and optical microscopy. Experimental phase diagrams were constructed from data obtained in melting and crystallization studies, and a simple monotectic is advanced, very similar to the previously studied binary system i-PP/1,3:2,4-bis(3,4-dimethylbenzylidene) sorbitol (DMDBS). In contrast to the latter, the crystallization temperature in the present system i-PP/1 was found to increase to not, vert, similar120 °C already at the lowest additive concentration employed and remained constant at further increasing additive concentration. Liquid-liquid phase separation was observed at elevated temperatures for i-PP/1 mixtures comprising more than not, vert, similar2 wt% of 1. A study on the optical properties of the i-PP/1 system revealed that the values for haze and clarity of injection-molded plaques progressively decreased and increased, respectively, in the concentration range up to 0.15 wt%. An intermediate region of fairly concentration-independent optical properties was found between 0.15 and 1 wt%, followed by a rapid increase in haze at concentrations exceeding 2 wt%.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie I
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie I > Lehrstuhl Makromolekulare Chemie I - Univ.-Prof. Dr. Hans-Werner Schmidt
Profilfelder
Profilfelder > Advanced Fields
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Forschungseinrichtungen > Forschungszentren > Bayreuther Institut für Makromolekülforschung - BIMF
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 29 Jun 2015 10:37
Letzte Änderung: 01 Sep 2022 11:52
URI: https://eref.uni-bayreuth.de/id/eprint/1350