Abstracts Book - IMRC 2018

• SE2-O045
ELECTRICAL AND MECHANICAL PROPERTIES ENHANCING OF
PMMA AND PA6 BY FUNCTIONALIZED MWCNTs ADITION
José de Jesús Contreras Navarrete 1 , Jael Madaí Ambriz Torres 2 , Carmen Judith Gutiérrez
García 2 , Francisco Gabriel Granados Martínez 2 , Diana Litzajaya Garcia Ruiz 2 , Jaime Abraham
Guzmán Fuentes 2 , Pedro Garnica González 3 , María de Lourdes Mondragón 3 , Ezequiel Huipe
Nava 4,5 , Omar Aguilar García 6 , Lada Domratcheva Lvova 2,7
1 Universidad Michoacana de San Nicolás de Hidalgo, Mechanical Engineer, Mexico.
2 Universidad Michoacana de San Nicolás de Hidalgo, Mechanical Engineering, Mexico.
3 Instituto Tecnológico de Morelia, Materials Engineering, Mexico. 4 Universidad Michoacana de
San Nicolás de Hidalgo, Electrical Engineering, Mexico. 5 Universidad Michoacana de San
Nicolás de Hidalgo, Language Deparment, Mexico. 6 Instituto Tecnológico de Morelia, Industrial
Engineering, Mexico. 7 Universidad Michoacana de San Nicolás de Hidalgo, Wood Technology
Engineering, Mexico.
Multiwall Carbon Nanotubes (MWCNTs) applying as reinforce in polymeric
matrices has been increasing in recent years. Improvements in thermal,
electrical and mechanical properties are achieved incorporating MWCNTs in
several polymers. There are many techniques to obtain nanocomposites using
MWCNTs and polymeric matrices such as melt mixing, casting, electrospinning,
electrodeposition, etc. MWCNTs dispersion in polymeric matrix is important to
reach improves in composite properties, however the type of polymeric matrix
used also influences over the finally properties. In this research functionalized
MWCNTs were incorporated in Polyamide 6 (PA6) and Polymethyl Methacrylate
(PMMA) by casting method. PA6 was dissolved in hydrochloric acid and PMMA
in toluene, using magnetic stirrer at 600 and 250 rpm respectively, during two
hours. Then 5, 7 and 9 wt% functionalized MWCNTs were introduced in the
solutions. Finally, the produced mixtures were casted in Petri dishes and dried
out at room temperature 5-48 hours. Composites were characterized by
Scanning Electron Microscopy (SEM), Raman and Fourier Transform Infrared
Spectroscopy (FTIR). Composite microhardness and electrical conductivity were
measured. SEM images showed the MWCNTs embedded into polymeric
matrices. Typical bands of PMMA and PA6 were observed by Raman
spectroscopy at 1453, 2951, 1540 and 2800 cm -1 . The D, G and G MWCNTs bands
were detected in PMMA/MWCNTs composites; in PA6/MWCNTs a wrapping
effect was observed. C=O, C-O, and -CH 2 functional groups were observed in
both composites by FTIR. A significant increasing in electrical conductivity was
observed in composites (PA6/MWCNTs and PMMA/MWCNTs) with the highest
carbon nanotubes concentration reaching values of 2.21x10 -4 and 8.77x10 -4