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Heterophasic copolymers of polypropylene: Development, design principles, and future challenges
Author(s) -
Gahleitner Markus,
Tranninger Cornelia,
Doshev Petar
Publication year - 2013
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.39626
Subject(s) - polypropylene , elastomer , compounding , materials science , copolymer , polymer science , polymer , thermoplastic elastomer , impact resistance , composite material
Initially developed to overcome the limited low‐temperature impact resistance of polypropylene (PP) and allow its application in subzero temperatures, the PP/elastomer blends became a very important and industrially relevant material class. Within the last 40 years, a whole range of PP impact copolymers from multireactor processes have been developed that are capable of covering wide application areas. This review summarizes their developmental history and presents options for the in‐reactor design of these polymers and their modification by compounding with elastomers and fillers or reinforcements after the polymerization. An overview of the application range is also presented together with a glimpse into the future of this material class. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3028–3037, 2013