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Morphology and mechanical properties of polypropylene/polystyrene blends compatibilized with styrene-butadiene block copolymers
- 1.0370458 - ÚMCH 2012 RIV US eng J - Journal Article
Fortelný, Ivan - Minkova, L. I. - Kotek, Jiří - Lapčíková, Monika - Michálková, Danuše
Morphology and mechanical properties of polypropylene/polystyrene blends compatibilized with styrene-butadiene block copolymers.
Polymer Engineering and Science. Roč. 52, č. 1 (2012), s. 191-204. ISSN 0032-3888. E-ISSN 1548-2634
R&D Projects: GA ČR GA106/06/0729; GA AV ČR IAA200500903
Institutional research plan: CEZ:AV0Z40500505
Keywords : polymer blends * compatibilization * morphology
Subject RIV: JI - Composite Materials
Impact factor: 1.243, year: 2012
The effect of molecular structure of styrene–butadiene block (SB) copolymers on the morphology, tensile properties, impact strength, and microhardness of polypropylene/polystyrene (PP/PS) (80/20) blends was studied. SB copolymers substantially reduce the size of dispersed PS particles formed at mixing. PS particles aggregate rapidly during compression molding and form honeycomb-like particles split by SB partitions, which persist at further annealing. Blends containing PS particles with well-developed honeycomb structure show lower yield stress, higher plasticity, and lower tensile impact strength than the blends having PS particles with simple structure.
Permanent Link: http://hdl.handle.net/11104/0204258
Number of the records: 1