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Selective localization of reduced graphene oxides at the interface of PLA/EVA blend and its resultant electrical resistivity
Author(s) -
Shen Ying,
Zhang TingTing,
Yang JingHui,
Zhang Nan,
Huang Ting,
Wang Yong
Publication year - 2017
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.23769
Subject(s) - materials science , composite material , electrical resistivity and conductivity , masterbatch , nanocomposite , graphene , percolation threshold , percolation (cognitive psychology) , nanometre , oxide , composite number , nanotechnology , metallurgy , neuroscience , electrical engineering , biology , engineering
Cocontinuous PLA/EVA (60/40 wt%) blends were filled with reduced graphene oxides (0.1–3 wt%) through the master batches of PLA/rGOs and EVA/rGOs, respectively. The results show that rGOs are located at the interface when the blend nanocomposites were prepared from PLA masterbatch. On the other hand, rGOs are located in EVA component when the blend nanocomposites were prepared from EVA/rGOs materbatch. The underlying mechanism for selective localization of rGOs in PLA/EVA was systematically investigated. First, theoretical prediction indicates the interface energies between two polymer components and rGOs are similar and rGOs prefer to locate at the interface of blend. Therefore, kinetic effects, including interfacial stability of rGOs and viscoelastic properties of polymer, play an important role on the selective localization of rGOs migration. Finally, The electrical resistivity measurements show that nanocomposites with rGOs locating at the interface is endowed much lower resistivity and percolation threshold compared to the blend nanocomposites with rGOs locating at EVA component. POLYM. COMPOS., 38:1982–1991, 2017. © 2015 Society of Plastics Engineers