Development of sustainable resource‐based nanostructured polyaniline/castor oil polyurethane composites

Abstract

Processibility is one of the important requirements for the commercial utilization of conducting polymers. Studies on composites and blends based on nano polyaniline (PANI) dispersions have become the subject of scientific curiosity with regard to their morphology, stability, and electron transport properties. In general, polymer nanocomposites are made by dispersing inorganic or organic nanoparticles into either a conventional thermoplastic or thermoset polymer. The present study reports the synthesis of nanostructured MO-PANI and castor oil polyurethane (COPU)-based composites. The effect of loading of nanostructured MO-PANI in COPU on the spectral, physicochemical and morphological properties has been analyzed.

Polyorthotoluidine dispersed castor oil polyurethane anticorrosive nanocomposite coatings

“…Castor oil polyurethane was prepared by a reported method. 39 Castor oil was reacted with TDI (NCO/OH ratio 1 : 2) in a threenecked round bottom ask under nitrogen gas purge. The reaction was carried out at room temperature (30 C) with continuous stirring for 2 h. The polymer of COPU was isolated as a viscous liquid.…”

“…from 3356 cm À1 of pristine POT to 3341 cm À1 for the -NH stretching and for the -NHCO peak from 1744 cm À1 to 1728 cm À1 . 39 The negative shi in the -NH and urethane of POT/COPU indicates that the urethane group of COPU interacts strongly with that of the -NH group of the POT. 39 The broadness of the NH peak is attributed to the presence of strong hydrogen bonding in between the -NH and -NHCO groups.…”

“…39 The negative shi in the -NH and urethane of POT/COPU indicates that the urethane group of COPU interacts strongly with that of the -NH group of the POT. 39 The broadness of the NH peak is attributed to the presence of strong hydrogen bonding in between the -NH and -NHCO groups. The carbonyl of the POT/COPU absorption peaks in the nanocomposites of POT/COPU observed at 1728 cm À1 and 1650 cm À1 exhibit a shi of À16 and À15 cm À1 as compared to that of the pristine COPU, which can be further correlated to the intense hydrogen bonding between the -NH of POT and the -NHCO of COPU (Fig.…”

Conductive Polymer Composites and Blends

“…The semi-IPNs were prepared via chemical polymerization by immersing ferric chloride impregnated CPEAU films in an aqueous pyrrole solution for different time periods. The same authors designed nanostructured PANI reinforced castor oil based polyurethane COPU nanocomposites [78]. Conductivity of the semi-IPN films was found to be in the semiconducting range, 2.9 3 10 24 S/cm to 6.8 3 10 26 S/cm.…”

Polyurethane derived from castor oil reinforced with long cotton fibers: Static and dynamic testing of a novel eco-friendly composite material

“…12 Castor oil hydroxyl functionality, making it suitable to produce polyurethane elastomers, is an interpenetrating polymer network from castor oil-based polyurethane and polyurethane foam. 13 In fact, there is a clear trend to increase the percentage of ''green''-based raw materials in the formulations of polymers, fibers, and composites for high added value applications as shown by the literature. [14][15][16][17][18][19][20][21] Sathishkumar et al 22 have presented the tensile and flexural properties of snake grass natural fiber-reinforced isophthalic polyester composites, showing several advantages over synthetic fibers.…”