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Compatibilisation of PPE/SAN blends by triblock terpolymers : Correlation between block terpolymer composition, morphology and properties

Titelangaben

Ruckdäschel, Holger ; Sandler, Jan K. W. ; Altstädt, Volker ; Rettig, Cornelia ; Schmalz, Holger ; Abetz, Volker ; Müller, Axel H. E.:
Compatibilisation of PPE/SAN blends by triblock terpolymers : Correlation between block terpolymer composition, morphology and properties.
In: Polymer. Bd. 47 (2006) Heft 8 . - S. 2772-2790.
ISSN 0032-3861
DOI: https://doi.org/10.1016/j.polymer.2006.02.064

Volltext

Link zum Volltext (externe URL): Volltext

Abstract

Immiscible blends of poly(2,6-dimethyl-1,4-phenylene ether) (PPE) and poly(styrene-co-acrylonitrile) (SAN) with a weight composition of 60/40 were compatibilised by polystyrene-block-polybutadiene-block-poly(methyl methacrylate) triblock terpolymers (SBM) using a two-stage melt-processing approach. In order to investigate the influence of the SBM composition on the compatibilisation efficiency, the block lengths of the triblock terpolymers were systematically varied. The resulting morphological features of the blend systems as function of SBM composition and processing parameters are correlated with the resulting thermal and thermo-mechanical properties. In the ideal case, SBM should be located at the interface as PS is miscible with PPE while PMMA is miscible with SAN. The elastomeric middle block as an immiscible component should remain at the interface. This particular morphological arrangement is known as the `raspberry morphology'. A detailed TEM analysis of the blend morphologies following initial extrusion-compounding revealed a high compatibilisation efficiency of the SBM types with equal lengths of the end blocks and, furthermore, the desired raspberry morphology was achieved. In contrast, high PS contents in comparison to the other blocks led to a pronounced micelle formation in the PPE phase. Further evaluation of the blend structures following injection-moulding indicated that the morphologies remain relatively stable during this second melt-processing step. A detailed thermal analysis of all blend systems supports the interpretation of the observed morphological features. The fundamental correlation between SBM composition and blend morphology established in this study opens the door for the controlled development of interfacial properties of such compatibilised PPE/SAN blends during melt-processing. (c) 2006 Elsevier Ltd. All rights reserved.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: ISI:000236817700023
Keywords: polymer blend; compatibilisation; triblock terpolymer
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie II > Lehrstuhl Makromolekulare Chemie II - Univ.-Prof. Dr. Andreas Greiner
Profilfelder > Advanced Fields > Polymer- und Kolloidforschung
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie
Profilfelder
Profilfelder > Advanced Fields
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
Eingestellt am: 16 Apr 2015 05:39
Letzte Änderung: 02 Mär 2022 12:57
URI: https://eref.uni-bayreuth.de/id/eprint/10400