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测试与分析 艾罡·表面活性剂对炭黑 / 聚苯胺电导率的影响

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Effect of surfactants on the conductivity of carbon black / Polyaniline

Ai Gang
(Yulin Hanting Chemical Technology Development Co. LTD., Yulin 718100, Shaanxi, China)

Abstract: In this paper, the effects of the amount of cationic surfactant, anionic surfactant and
mixed cationic/anionic surfactant on the conductivity of carbon black / polyaniline composite particles
were studied. It was tested and characterized by SEM and four probe conductivity tester. Carbon black /
polyaniline composite particles with better conductivity were synthesized by in-situ polymerization; When the
molar ratio of aniline to cationic surfactant was 5:1, the conductivity of carbon black / polyaniline composite
particles was the highest, the value was 4 142.052 S . cm , which was 3 orders of magnitude higher than
-1
that without surfactant; The conductivity of carbon black / polyaniline composite particles with anionic
surfactant was also improved, and it was higher than that with the same proportion of cationic surfactant;
However, the conductivity of carbon black / polyaniline composite particles was not significantly affected by
the addition of mixed cationic/anionic surfactants, but it was 2 orders of magnitude higher than that without
surfactants. In this experiment, the carbon black / polyaniline composite particles with high conductivity were
obtained by adding surfactants in the polymerization system of aniline and carbon black, which were 3 orders
of magnitude higher than that of the carbon black / polyaniline composite particles without surfactants, and
the effect was better observed in the photos of SEM.
Key words: surfactant; electrical conductivity; in situ polymerization; electrical conductivity
(R-03)

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