Premium
Formation and evolution of the carbon black network in polyethylene/carbon black composites: Rheology and conductivity properties
Author(s) -
Ren Danqi,
Zheng Shaodi,
Wu Feng,
Yang Wei,
Liu Zhengying,
Yang Mingbo
Publication year - 2014
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.39953
Subject(s) - carbon black , materials science , rheology , composite material , composite number , electrical resistivity and conductivity , polyethylene , morphology (biology) , polymer , network structure , filler (materials) , natural rubber , machine learning , biology , computer science , electrical engineering , genetics , engineering
We report a detailed investigation on the effect of carbon black (CB) morphology on network formation and evolution in high‐density polyethylene/CB composites. There were three types of networks in our study, the electrical network in the solid state and the electrical and rheological networks in the melt state. The evolution of the network in the polymer melt was traced by simultaneous electrical resistivity ( R ) and dynamic rheology testing. An oscillation strain sweep was used to investigate the network stability with a large strain. We found that with high‐structure CB with a branched morphology, it was easier to form a filler–polymer or filler–filler network than with low‐structure CB with a spherical morphology in the composite melt. The high‐structure CB network was more stable with a large strain compared to the low‐structure one. Meanwhile, the low‐structure CB aggregates had stronger capability of movement and re‐aggregation in the polymer melt. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 39953.