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Influence of annealing time on linear rheology and morphology of silica filled polyisoprene rubber and ethylene‐propylene rubber
Author(s) -
Xie Zhou,
Xu Yiting,
Song Yihu,
Zheng Qiang
Publication year - 2018
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.46679
Subject(s) - natural rubber , ethylene propylene rubber , materials science , rheology , annealing (glass) , dynamic mechanical analysis , ethylene , agglomerate , copolymer , dynamic modulus , composite material , vulcanization , polymer chemistry , chemical engineering , polymer , chemistry , organic chemistry , catalysis , engineering
Dynamic rheology in combination of fluorescence and molecular weight analysis was carried out to explore annealing‐induced structural evolutions in silica filled polyisoprene rubber (IR) and ethylene‐propylene rubber compounds containing rhodamine B modified silica of 2.5% in volume fraction. The results show that storage modulus of the ethylene‐propylene rubber compounds increases slightly with increasing annealing time while that of the IR compounds exhibits a peaking behavior at mediate silica contents. Fluorescence tests reveal that the silica agglomerates in both compounds while the agglomeration is more significant in the IR ones. Molecular weight analysis shows that IR in the compounds undergoes degradation during the annealing. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46679.