Method for preparing polyaniline modified neutral conductive filter membrane

Abstract

The invention discloses a method for preparing a polyaniline modified neutral conductive filter membrane and belongs to the technical field of conductive filter membrane modification and preparation in the field of conductive composite materials. The method is characterized in that phytic acid with high conductivity is doped with polyaniline under neutral conditions, the low-cost filter material is subjected to conductive modification, and good conductive performance is kept under the neutral conditions. The doped polyaniline is firmly loaded, and the good filtering separation performance of the filter cloth is kept; the conductive performance is improved due to graphene modification; the non-conductive filter material is modified into a filter membrane with high conductivity, the application range of the filter membrane is widened, and the filter membrane is particularly suitable for applying a micro electric field to relieve the membrane pollution and other membrane charging processes. The method has the beneficial effects that the graphene polyaniline is combined with the filter material, and the conductivity of the filter membrane is greatly improved, particularly the conductivity under the neutral conditions; and therefore, the modified low-price filter material is a conductive filter membrane and has wide application prospects in the fields of membrane charging process and water treatment thereof.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of conductive composite materials, and relates to a modified conductive filter membrane and a preparation method, in particular to the use of phytic acid-doped polyaniline to modify a cheap filter material so that the non-conductive filter material can be used under neutral conditions. method with good electrical conductivity. Background technique [0002] At present, conductive composite materials have a wide range of applications, such as electromagnetic shielding materials, energy electrode materials, electrocatalytic materials, (electric) membrane separation, detection analysis and response, and control fields. Among them, the conductive filter membrane is a special type of membrane material, which has both electrical conductivity and filtration and separation properties. Metal film and carbon film have good electrical conductivity, but the cost is relatively high. Compos...

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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the applicable range of conductivity of polyaniline modified filter material is narrow; It has the characteristics of good conductivity under neutral conditions. Using phytic acid doped polyaniline to modify the matrix filter membrane, by controlling the conditions and steps of in-situ polymerization, polyaniline modified under neutral conditions and a wider range of applications can be obtained. conductive membrane

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