The role of polyaniline in the formation of iron-containing nanocomposites

Monzón, Lorena M. A.; Ackland, Karl; Mosivand, Saba; Venkatesan, M.; Coey, J. M. D.

doi:10.1007/s11051-013-1533-5

Cited by 8 publications

(2 citation statements)

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“…However, PANI has been produced in solution using iron chloride [ 83 , 84 ] and silver nitrate [ 85 ]. Additionally, Fe +3 [ 86 ] and Ag + [ 87 ] can be used as oxidants to produce PANI in nanocomposites (see below). It is likely that longer (>5 min) grinding times are required to affect the polymerization.…”

Section: Resultsmentioning

confidence: 99%

Mechanochemical Synthesis of Polyanilines and Their Nanocomposites: A Critical Review

Barbero

Acevedo

2022

Polymers

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The mechanochemical synthesis of polyanilines (PANIs), made by oxidative polymerization of anilines, is reviewed. First, previous knowledge of the polymerization reaction in solution is discussed to understand the effect of different parameters: oxidant/monomer ratio, added acid, oxidant, temperature and water content on the properties of the conducting polymers (molecular weight, degradation, doping/oxidation level, conductivity, and nanostructure). The work on mechanochemical polymerization (MCP) of anilines is analyzed in view of previous data in solution, and published data are critically reconsidered to clarify the interpretation of experimental results. A key factor is the production of acids during polymerization, which is often overlooked. The production of gaseous HCl during MCP of aniline hydrochloride is experimentally observed. Since some experiments involves the addition of small amounts of water, the kinetics and heat balance of the reaction with concentrated solutions were simulated. A simple experiment shows fast (<2 min) heating of the reaction mixture to the boiling point of water and temperature increments are observed during MCP in a mortar. The form and sizes of PANI nanostructures made by MCP or solution are compared. The extensive work on the production of nanocomposites by MCP of anilines together with different nanomaterials (porous clays, graphene, carbon nanotubes, metal, and oxide nanoparticles) is also described.

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Section: Resultsmentioning

confidence: 99%

Mechanochemical Synthesis of Polyanilines and Their Nanocomposites: A Critical Review

Barbero

Acevedo

2022

Polymers

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“…On the other hand, Co NPs segregate into separate domains, as the attractive forces established among them are stronger than their tendency to spread at an interface. A way to control the remanence magnetization of the Co NPs and therefore their interfacial self-assembly, would be to synthesize particles with different particle size around the critical single-domain size [27,28].…”

Section: Discussionmentioning

confidence: 99%