Premium
Effect of the filler characteristics on the miscibility of styrene‐butadiene rubber and nitrile‐butadiene rubber blends
Author(s) -
Pérez León D.,
Sierra Ligia,
López Betty L.
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21126
Subject(s) - materials science , natural rubber , miscibility , composite material , styrene butadiene , filler (materials) , nitrile rubber , polymer , dispersion (optics) , glass transition , nitrile , polymer blend , styrene , copolymer , organic chemistry , chemistry , physics , optics
Styrene‐butadiene rubber (SBR) and nitrile‐butadiene rubber (NBR) blends are immiscible. Fillers can be used as compatibilizers. The SBR + NBR blends reinforced with a mesoporous silica and a precipitated silica are characterized by studying their miscibility by the determination of rubber bound, their changes in heat capacity at each glass transition temperature, and their mechanical performance. NBR is preferentially located at the silica surface improving its dispersion. Larger rubber + filler as well as SBR + NBR interphases are obtained for the blends reinforced with the mesoporous silica, whose high surface area and organized porous structure allow a better polymer + filler interaction. The reinforced blends present higher strength at break than each reinforced polymer alone. The best performance is attained for blends reinforced with mesoporous silica. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers