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Related Experiment Video

Updated: Jul 15, 2026

A Polyaniline-based Sensor of Nucleic Acids

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

Core/Shell Pigments with Polyaniline Shell: Optical and Physical-Technical Properties.

Tatyana A Pugacheva¹, Georgiy V Malkov¹, Alexander A Ilyin²

¹Institute for Problems of Chemical Physics of the Russian Academy of Sciences (IPCP RAS), Academician Semenov Avenue 1, 142432 Chernogolovka, Russia.

|May 28, 2022

Summary

Core/shell pigments combine anti-corrosion and barrier effects for low-toxicity, high-protection coatings. Their optical and absorption properties are optimized with specific polyaniline (PANi) content and core materials like kaolin and talc.

Keywords:

core/shell pigments doping inorganic fillers optical properties polyaniline

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Published on: January 7, 2019

Area of Science:

Materials Science
Corrosion Science

Background:

Core/shell pigments offer combined anti-corrosion and barrier properties.
They present an opportunity for low-toxicity, high-protective coatings in paints and varnishes.

Purpose of the Study:

To comprehensively study the properties of core/shell pigments.
To evaluate the impact of polyaniline (PANi) content on pigment characteristics.

Main Methods:

Investigated core/shell pigments with varying PANi content (5-50 wt.%) using sulfuric and phosphoric acids as dopants.
Assessed pigment properties including hiding power, blackness, and oil absorption.
Compared performance against pure PANi and black-iron-oxide pigments.

Main Results:

Hiding power approaches pure PANi at 50 wt.% PANi.
Blackness is constant around 35 above 10 wt.% PANi, with kaolin-based pigments showing lower blackness at 5 wt.%.
A 20 wt.% PANi pigment is optically equivalent to black-iron-oxide; higher PANi increases oil absorption.

Conclusions:

Core/shell pigments demonstrate tunable optical and protective properties.
Energy-efficient dispersion is achieved with kaolin and talc cores.
These pigments show promise for advanced anti-corrosion applications.