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Dielectric and tensile behavior of nanoclay reinforced polyetherimide nanocomposites
Author(s) -
Dwivedi Mayank,
Dixit Alok,
Alam Sarfaraz,
Ghosh Anup K.
Publication year - 2011
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.34196
Subject(s) - materials science , polyetherimide , nanocomposite , composite material , exfoliation joint , ultimate tensile strength , dielectric , dielectric loss , organoclay , scanning electron microscope , polymer , nanotechnology , graphene , optoelectronics
Polyetherimide (PEI)/organoclay (Cloisite 30B) nanocomposite and PEI/pristine nanoclay (K10) nanocomposite were made by solution casting process. Nanoclay content of 0.5, 1.0, 2.0, and 3.0% (by weight) was reinforced in PEI. The dielectric properties (dielectric constant, loss tangent, and electromagnetic transmission/reflection losses) of PEI/Cloisite 30B were observed lower than PEI/K10 in X band frequency (8 to 12 GHz). Mixed morphology in terms of intercalation and exfoliation was evident in wide‐angle X‐ray diffraction (WAXD) analysis and transmission electron micrographs (TEM) of PEI/Cloisite 30B. Whereas, in PEI/K10, immiscibility, segregation, and phase separation of K10 were observed in WAXD analysis and scanning electron micrographs (SEM). Tensile properties (tensile strength, modulus, and elongation at break) of PEI/Cloisite 30B were superior to PEI/K10. Reinforcement with 1%, by weight, of Cloisite 30B in PEI resulted in the optimum properties, among all the compositions. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011