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Preparation, thermal and mechanical properties of poly (ether‐imide) composite reinforced with carbon nanotube buckypaper
Author(s) -
Ribeiro Bruno,
Corredor Jefersson A. R.,
Ardila Laura,
Santos Luis F. P.,
Costa Michelle L.,
Rezende Mirabel C.,
Botelho Edson C.
Publication year - 2020
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.48330
Subject(s) - buckypaper , materials science , thermogravimetric analysis , thermal decomposition , composite number , composite material , carbon nanotube , scanning electron microscope , chemical engineering , polymer chemistry , organic chemistry , chemistry , engineering
Vacuum filtration technique was employed in order to prepare multiwalled carbon nanotube buckypapers (MWCNT‐BP) through a well‐dispersed suspension of MWCNT/H 2 O with the aid of Triton X‐100 surfactant. The obtained BP (buckypaper) was then infiltrated with a solution of poly (ether‐imide) (PEI) under vacuum conditions. The visual inspection demonstrated the importance of the centrifugation procedure before the vacuum filtration of the suspension, revealing a smooth surface of the as‐prepared buckypaper. Thermogravimetric experiments (TGA) and scanning electron microscopy analyses have demonstrated the role of isopropyl alcohol in the removal of Triton X‐100 from the nanotube network. SEM observations of the cross‐section view of the samples revealed a porous network of the fabricated BP, and an impregnated structure of the PEI/BP composite, suggesting a good interfacial bonding between MWCNT and PEI. Moreover, significant improvements were achieved in mechanical and thermal properties of PEI matrix by the incorporation of BP, as the increase of both the storage modulus (42%) and the T g (11 °C) for the PEI/BP composite. TGA have shown a significant increase in the onset decomposition temperature of the polymer by the incorporation of the BP. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48330.