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PS/EPDM blends prepared by in situ polymerization of styrene by Emerson Lourenço; Maria Isabel Felisberti is a Materials Science article available to read on EtoBox.

What is PS/EPDM blends prepared by in situ polymerization of styrene about?

## Abstract PS/EPDM blends formed by __in situ__ polymerization of styrene in the presence of EPDM were prepared. EPDM has excellent resistance to factors such as weather, ozone and oxidation and it could be a good alternative for substituting polybutadiene‐based rubbers in PS toughening. The PS/EPDM blends present two phases, an EPDM elastomeric phase dispersed into a rigid matrix. The blends show higher thermal stability than polystyrene homopolymer due to the stabilizing effect of EPDM incorporation. The mechanical properties of __in situ__ polymerized PS/EPDM blends with different compositions were evaluated before and after accelerated photoaging and compared with the properties of HIPS submitted to the same aging conditions. The blend containing 17 wt % of EPDM presents an increase in the impact resistance of 210% in comparison with the value of PS. Although the initial mechanical properties of HIPS are superior, a pronounced drop was observed after an exposure time. For example, after the aging period, all PS/EPDM blends showed higher strain at break than HIPS. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

Who reads PS/EPDM blends prepared by in situ polymerization of styrene?

Author

Emerson Lourenço; Maria Isabel Felisberti

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0021-8995)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)