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Halloysite Nanotubes Filled in Asymmetric Blend of Polyamide 6, 12/poly (Ethylene‐Octene) Elastomer: Tough‐to‐Brittle Transition in Nanocomposites
Author(s) -
Kumar Sunil,
Maiti Saurindra N.,
Satapathy Bhabani K.
Publication year - 2017
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201600155
Subject(s) - materials science , composite material , nanocomposite , brittleness , fracture toughness , toughness , elastomer , maleic anhydride , octene , halloysite , copolymer , polymer
Summary A tough‐to‐brittle transition is distinctly observed with a critical correspondence to dispersed phase domain size in halloysite nanotubes filled ternary nanocomposites based on compositionally asymmetric and toughened blend of polyamide 6, 12 (PA‐6, 12)/poly(ethylene‐octene) copolymer‐g‐maleic anhydride (POE‐g‐MA) as the matrix. The maxima in the resistance to fracture initiation and crack propagation resistance normalized fracture initiation as a measure of toughness followed by a significant drop with a direct correspondence to brittleness‐index (BI), comprehensively establishes such a transition. Microscopically a smooth transition in the deformation mechanism above a domain‐size ( D n ) of ∼0.43 μm with an intrinsic brittleness‐index (BI) of ∼0.57 (×10 12 Pa −1 ) seem to be responsible for the same.