Facile preparation of multifunctional poly(amide‐imide)/polyaniline films: Combining self‐cleaning, self‐extinguishing, and conductive

Abstract

Recently, multifunctional films are of particular interest to scientists owing to their diversified properties. Here, we demonstrated that self‐cleaning, self‐extinguishing, and high conductive films were fabricated by simple solvent‐casting method from poly(amide‐imide)/polyaniline composites. The multifunctional films exhibited controllable water contact angles varying from 65° to 120° and high electrical conductivities of over 40 S m−1. Moreover, due to the improved hydrophobicity, the multifunctional films showed self‐cleaning characteristics and were used to collect the dust powders easily and perfectly during the dispensed water droplet rolling off the solid surface. Furthermore, the self‐extinguishing property of the multifunctional films was confirmed by thermogravimetric analysis. The special film composition and morphology are the two important aspects that induce such unusual properties. The polyaniline content can strongly influence the morphology of the composite films, which in turn display different hydrophobicities and conductivities. POLYM. ENG. SCI., 59:E33–E43, 2019. © 2018 Society of Plastics Engineers

Facile Preparation of Highly Conductive Poly(amide-imide) Composite Films beyond 1000 S m−1 through Ternary Blend Strategy

“…In general, with adding CB into PAI/PANI binary films, the conductivity of PAI/PANI/CB ternary films increased hugely. In detail, PAI/PANI binary blend composites exhibited a conductivity of 9.6 S m −1 , which is almost the same as what we reported before [17]. As shown in Figure 4a, the conductivity of PAI/PANI/CB ternary films increased exponentially.…”

“…Previously, we fabricated a series of PAI/PANI conductive polymer composites [17], and the conductive property of PAI/PANI polymer composites was clearly improved compared with pure PAI. A conductivity of 10 S m −1 was achieved when the content of PANI reached 20 wt%, but this was still low.…”

“…As shown in Figure 1, aromatic PAI was prepared from diimide diacid and diamine through a Yamazaki–Higashi phosphorylation reaction [7,17], and their structures were confirmed by H-NMR as shown in Figure 2 and Figure 3.…”

“…The insulator–conductor transition could be achieved by incorporating conductive fillers into the polymer matrix. Usually, organic conductive fillers are classified into two groups—intrinsically conductive polymers (ICPs) [12,13,14,15,16,17,18] and carbonaceous fillers (CFs) [19,20,21,22,23,24,25]. Polyaniline (PANI), an intrinsically conductive polymers, has been considered one of the most important conducting polymers to fabricate CPCs, because of its low-cost, relative environmental stability, and electrochemical behavior [26,27,28,29,30].…”

“…Polyaniline (PANI), an intrinsically conductive polymers, has been considered one of the most important conducting polymers to fabricate CPCs, because of its low-cost, relative environmental stability, and electrochemical behavior [26,27,28,29,30]. However, the conductivity of most CPCs based on this kind of conductive filler is relatively low [31,32,33]; more importantly, their mechanical performance clearly deteriorates with the increasing content of ICPs [17,34,35]. Carbon nanotubes (CNTs), as a kind of carbonaceous filler, have been regarded as ideal conductive fillers, which can improve conductive and mechanical performance simultaneously [36,37,38,39,40].…”