Premium
Tailoring electrical and thermal properties of polymethyl methacrylate‐carbon nanotubes composites through polyaniline and dodecyl benzene sulphonic acid impregnation
Author(s) -
Bashir Farrukh,
Hussain Tajamal,
Mujahid Adnan,
Shehzad Khurram,
Raza Muhammad Aamir,
Zahid Muhammad,
Athar Muhammad Makshoof
Publication year - 2018
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.24485
Subject(s) - materials science , composite material , carbon nanotube , polyaniline , percolation threshold , thermal stability , filler (materials) , dielectric , nanocomposite , percolation (cognitive psychology) , electrical resistivity and conductivity , polymer , chemical engineering , optoelectronics , engineering , neuroscience , electrical engineering , polymerization , biology
A series of composites of polymethyl methacrylate (PMMA) with polyaniline‐multiwalled carbon nanotubes (PANI‐CNTs) as filler I and dodecyl benzene sulphonic acid‐multiwalled carbon nanotubes (DBSA‐CNTs) as filler II are developed by solution mixing method. Composites are characterized for morphological, electrical, and thermal properties to study effect of two different types of additives, PANI, and DBSA. Furthermore, their influence on dispersion of CNTs is also studied. Electrical percolation behavior of both composites series is investigated through dielectric and conductivity measurements. Sharp insulators to conductor transition curves are obtained for filler I and II, with conductivity of 5.6 S cm −1 at 2 wt% of CNTs and 2 S cm −1 at 3 wt% of CNTs, respectively. High dielectric constant is observed for filler I as compared to filler II due to the formation of comparatively big clusters of filler I than II. Theoretically calculated percolation threshold was found to be 1.3 wt% for filler I and 0.8 wt% for filler II in the matrix with exponent constants 2.4 and 1.25, respectively. Thermal stability of PMMA composites, containing filler II, indicated an impressive increase by 72°C onset and 55°C in complete degradation temperature as compared to pure PMMA. POLYM. COMPOS., 39:E1052–E1059, 2018. © 2017 Society of Plastics Engineers