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Thermoplastic elastomers based on semicrystalline block copolymers

Title data

Schmalz, Holger ; Abetz, Volker ; Lange, Ronald:
Thermoplastic elastomers based on semicrystalline block copolymers.
In: Composites Science and Technology. Vol. 63 (June 2003) Issue 8 . - pp. 1179-1186.
ISSN 0266-3538
DOI: https://doi.org/10.1016/S0266-3538(03)00039-3

Official URL: Volltext

Abstract in another language

Thermoplastic elastomers are used in a wide range of applications due to easy processing by conventional methods like injection molding and extrusion. ABC triblock copolymers with two hard domain forming end blocks in a rubbery matrix of B are one way to approach thermoplastic elastomers. In this contribution we will compare polystyrene-block-poly(ethylene-alt-propylene)-block-polyethylene (PS-b-PEP-b-PE) and polystyrene-block-poly-(ethylene-alt-propylene)-block-polystyrene (PS-b-PEP-b-PS) triblock copolymers with similar middle block content with respect to their morphological and mechanical properties. Transmission electron microscopy (TEM) and scanning force microscopy (SFM) reveal for the PS-b-PEP-b-PE triblock copolymers a morphology consisting of PS cylinders and PE crystallites within a matrix of the PEP block. Mechanical characterization of these triblock copolymers demonstrated that for small strains the PS-b-PEP-b-PE triblock copolymers exhibit the aimed smaller plastic deformations, i.e. better elastic properties, compared to the polystyrene based ABA type thermoplastic elastomers. However, at high strains the PS-b-PEP-b-PS triblock copolymers show a significantly better elastic recovery. (C) 2003 Elsevier Science Ltd. All rights reserved.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: ISI:000182739600014
Keywords: triblock copolymer
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 16 Apr 2015 05:57
Last Modified: 27 Apr 2016 07:12
URI: https://eref.uni-bayreuth.de/id/eprint/10404