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Fast and highly efficient one‐pot synthesis of polyoxadiazole/carbon nanotube nanocomposites in mild acid
Author(s) -
Loos Marcio R,
Abetz Volker,
Schulte Karl
Publication year - 2011
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2983
Subject(s) - carbon nanotube , nanocomposite , materials science , ultimate tensile strength , phosphoric acid , composite material , hydrazine (antidepressant) , chemical engineering , polymer chemistry , chemistry , chromatography , engineering , metallurgy
Sulfonated poly(4,4′‐diphenylether‐1,3,4‐oxadiazole) (POD) composites have been successfully prepared through solution polycondensation of 4,4′‐diphenylether dicarboxylic acid and hydrazine sulfate. The reactions were performed in the presence of various types of pristine carbon nanotubes, i.e. single‐, double‐ and multi‐walled carbon nanotubes, using mild poly(phosphoric acid) as a condensing agent. The POD composites with high molecular weight (of the order of 10 5 g mol −1 ) were highly soluble in polar aprotic solvents and thermally stable at temperatures as high as 475 °C. The synthesis method used guaranteed an improved interaction between filler and matrix, thus allowing an enhanced load transfer. The overall performance of the composites was enhanced due to a synergistic reinforcement effect. The nanocomposites exhibited an increase of +33% in storage modulus, +56% in tensile strength and +245% in tensile energy to break. Copyright © 2010 Society of Chemical Industry