Development of environmental friendly castor oil-based waterborne polyurethane dispersions with polyaniline

Abstract

This study describes the fabrication and characterization of castor oil‐based waterborne polyurethane/polyaniline (COWPU/PAni) conducting polymer blend films. The COWPU synthesized from isophorone diisocyanate was reacted with castor oil to form prepolymers, which were chain extended by reacting it with N‐methyldiethanolamine. Quaternization and self‐emulsification including deionized water followed in COWPU dispersions. Also, COWPU/PAni hybrid dispersions were synthesized with 2, 4, and 6 wt% of PAni–dodecyl benzene sulfonic acid to make different conductive composites. The outcome of COWPU/PAni was characterized by Fourier transform infrared spectrometer, differential scanning calorimeter, thermogravimetric analysis, dynamic mechanical and thermal analyzer, and scanning electron microscopy analysis. According to Fourier transform infrared spectrometer analysis, hydrogen bonding appears between –NH of PAni and CO of COWPU. Meanwhile, incorporating PAni can improve the thermal stability of COWPU. The resulting COWPU/PAni conducting blend films can be used as antistatic and anticorrosive coating materials. Copyright © 2016 John Wiley & Sons, Ltd.

Enhanced Mechanical Properties and Functional Performances of Cationic Waterborne Polyurethanes Enabled by Different Natural Phenolic Acids

“…Acetic acid (AA) is one of the most common acid neutralizers used in the production of cationic waterborne polyurethanes. 24 Hydrochloric acid (HCL), 25 glycollic acid, 3 dimethyl sulfuric acid, 26 and guanidinoacetic acid 27 have also been reported as neutralizers to prepare cationic WPUs. These neutralizers are all derived from petroleum feedstock.…”

Flame‐retardant compounds for polymeric materials from an abundantly available, renewable biosource, castor oil

“…11 Many of these also function as valuable food sources. [13][14][15] The oil may be utilized as a base for the generation of a variety of polymeric materials. Unrefined castor oil is toxic to humans and animals because it contains ricin, ricinine, and other poisonous agents.…”

“…Thus, there are two active functionalities in each fatty ester chain that may be utilized for the conversion of the oil to useful polymer additives. [13][14][15] The oil may be utilized as a base for the generation of a variety of polymeric materials. [16][17][18] It may also be pyrolyzed to generate heptaldehyde and 10-undecenoic acid, a commercially useful compound.…”

Cross‐linked waterborne alkyd hybrid resin coatings modified by fluorinated acrylate‐siloxane with high waterproof and anticorrosive performance

“…Definitely, applying anticorrosive coatings represents an easy and scalable strategy. However, solvent‐borne coating is gradually replaced by the waterborne coating, because increasing environmental pressures are forcing the coating industry to minimize the release of volatile organic compounds . Among the water‐based coatings, waterborne alkyd resin had become one of the hot topics in the field of waterborne anticorrosion coating because of its high cost‐effective and excellent performance .…”