2001
DOI: 10.1002/polb.1068
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Compatibilization efficiency of styrene–butadiene multiblock copolymers in PS/PP blends

Abstract: The compatibilizing effect of di-, tri-, penta-, and heptablock (two types) copolymers with styrene and butadiene blocks was studied in polystyrene/polypropylene (PS/PP) 4/1 blends. The structure of PS/PP blends with the addition of 5 or 10 wt % of a block copolymer (BC) was determined on several scale levels by means of transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). The results of the structure analysis were correlated with measured stress-transfer properties: elongation at br… Show more

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Cited by 56 publications
(54 citation statements)
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“…According to the results obtained in a study of polypropylene/polystyrene blends, it seems that the localization and structure of supermolecular objects of styrene-butadiene copolymers have a fundamental effect on mechanical properties of the blends. 6 We believe that the behavior of the supermolecular objects can explain discrepancies in the literature regarding the effects of the block copolymer architecture on their compatibilization efficiency.…”
Section: Introductionmentioning
confidence: 98%
“…According to the results obtained in a study of polypropylene/polystyrene blends, it seems that the localization and structure of supermolecular objects of styrene-butadiene copolymers have a fundamental effect on mechanical properties of the blends. 6 We believe that the behavior of the supermolecular objects can explain discrepancies in the literature regarding the effects of the block copolymer architecture on their compatibilization efficiency.…”
Section: Introductionmentioning
confidence: 98%
“…[1,2] Usually, the interfacial interactions are enhanced by (i) use of a functionalized modifier, and (ii) addition or in-situ formation of a block (graft) copolymer, the blocks of which have the same or similar chemical composition as the homopolymers in their immiscible blend. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] A compatibilizer can reduce particle sizes by lowering the interfacial tension, preventing particles from coalescing, and promoting adhesion between the two homopolymer phases, which results in improved mechanical properties.…”
Section: Introductionmentioning
confidence: 99%
“…Moreover, neither size nor structure of the particles can be predicted a priori. Generally a part of SBS block copolymer is localized in bulk phases in PP/PS/SBS blends [32,42]. The distribution of SBS copolymer between the interface and bulk phases is sensitive to a number of factors.…”
Section: Discussionmentioning
confidence: 99%