Influence of comonomer incorporation on morphology and thermal and mechanical properties of blends based upon isotactic metallocene-polypropene and random ethene/1-butene copolymers

Blends of isotactic polypropene (i‐PP) with random ethene/1‐butene (EB) copolymers containing 10, 24, 48, 58, 62, 82, and 90 wt % 1‐butene were prepared in order to examine the influence of the EB molecular architecture on the morphology development as well as on the thermal and mechanical propertie...

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Bibliographic Details
Published in:Journal of applied polymer science 1999-10, Vol.74 (4), p.838-848
Main Authors: Mäder, Dietmar, Thomann, Yi, Suhm, Jürgen, Mülhaupt, Rolf
Format: Article
Language:English
Subjects:
AFM
Applied sciences
blend
dynamic mechanical properties
ethylene-1-butene copolymers
Exact sciences and technology
glass transition
impact
metallocene
miscibility
Organic polymers
Physicochemistry of polymers
polypropene
Properties and characterization
rubber
Thermal and thermodynamic properties
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Summary:Blends of isotactic polypropene (i‐PP) with random ethene/1‐butene (EB) copolymers containing 10, 24, 48, 58, 62, 82, and 90 wt % 1‐butene were prepared in order to examine the influence of the EB molecular architecture on the morphology development as well as on the thermal and mechanical properties. Compatibility between i‐PP and EB increased with increasing 1‐butene content in EB to afford single‐phase blends at a 1‐butene content exceeding 82 wt %. The morphology was investigated using AFM and TEM. Improved compatibility accounted for enhanced EB dispersion and interfacial adhesion. Highly flexible as well as stiff blends with improved toughness were obtained. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 838–848, 1999
ISSN:0021-8995
1097-4628
DOI:10.1002/(SICI)1097-4628(19991024)74:4<838::AID-APP10>3.0.CO;2-L