Morphological Studies of Epoxy/Polyaniline Blends

Abstract

Summary: Polyaniline‐dodecybenzenesulfonic acid (PANI‐DBSA)/epoxy resin (EP) blends were prepared by a solution‐in‐toluene process and direct mixing of PANI‐DBSA with EP. The dispersion quality of PANI‐DBSA proved to be strongly related to the final electrical properties of the cured blends. The solution processed blends showed enhanced electrical properties with small PANI‐DBSA contents (percolation threshold determined was around 2.3 wt.‐% PANI‐DBSA). The morphologies of these blends were investigated by atomic force (AFM), scanning electron (SEM) and transmission electron (TEM) microscopy. The existence of a translucent PANI‐DBSA network exists within the EP matrix. The microscopy investigations were in agreement with the results from differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA).SEM image of the PANI‐DBSA‐rich regions (indicated by arrows) surrounded by the conductive EP/PANI‐DBSA matrix (5 wt.‐% PANI‐DBSA).magnified imageSEM image of the PANI‐DBSA‐rich regions (indicated by arrows) surrounded by the conductive EP/PANI‐DBSA matrix (5 wt.‐% PANI‐DBSA).

Ultrasonic characterization of conductive epoxy resin/polyaniline composites

“…In related literature, PANI is added into polyethylene and polypropylene, polyamide, poly (vinyl alcohol), polycarbonate, poly (methylmethacrylate), rubbers and elastomers, and epoxies at different wt % amounts (1–60 wt %) for obtaining conductive composites, which have better materials properties (Mechanical, electrical, elastic, etc.). It is found that increasing amount of PANI causes an increase in conductivity, but meanwhile, after 7 wt % amount of PANI addition, a decrease in mechanical properties occurs.…”

Structure and properties of epoxy/polyaniline nanocomposites

“…However, preparation of these systems is often made difficult because of poor solubility and poor processability of PANI. Various procedures have been developed to overcome these shortcomings [2,[4][5][6][7][8]. One of the solutions consists in preparation of PANI in polymer in situ by a suitable polymerization reaction.…”

High dielectric constant polyaniline/sulfonated poly(aryl ether ketone) composite membranes with good thermal and mechanical properties

“…[11][12][13] Additionally, the low concentration of PANI within polymeric composite films can endow the films with conductive or semiconductive capabilities and promote the development of thin, light, flexible, and inexpensive organic electronics in displays, sensors, solar technology, and protonexchange membranes. [14][15][16][17] In this study, an advanced all-organic composite consisting of PANI particles as a functional filler and sulfonated poly(aryl ether ketone) (SPAEK) as the polymer matrix was investigated.…”