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Study on the Fibre Modified by Polyaniline and the Electrical Conductivity of That

Author: QiaoXin
Tutor: DuJianGong
School: Hebei University of Science and Technology
Course: Textile Chemistry and Dyeing and Finishing Engineering
Keywords: Polyaniline Polyester Conductive fibers Research Progress Situ polymerization Conductivity Influencing factors
CLC: TQ340.1
Type: Master's thesis
Year: 2010
Downloads: 62
Quote: 0
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Abstract


Conductive fiber uses a wide range of textile products with antistatic function and radiation , and can be used for the preparation of the fabric sensors and smart clothing and other high-tech products , electricity , medicine , clothing , protection , bio- science and aviation aerospace and other fields are playing an extremely important role . The papers as polyester fiber matrix , using the in situ polymerization of polyaniline / polyester composite conductive fiber , find out the inherent laws of various process conditions on the performance impact of fiber conductive . The basic steps of the in situ polymerization as follows: put polyester fiber in the aniline solution soak for a period of time , so that a certain amount of aniline monomer fiber adsorption , reinvested containing an oxidizing agent and a dopant acid reaction solution , aniline oxidation polymerization to form the poly aniline. The conductive properties of the fibers and a polyaniline oxidation degree and medium acids related to the doping reaction . Best; When polyaniline macromolecular chains oxidation unit , and restoring the number of cells is substantially equal to , the conductive properties of the fiber only through the dielectric acid efficiently doped polyaniline can be conductive . This subject focused on the alkali treatment, the prepreg time oxidant species and concentration , doping acid type and concentration , reaction temperature and reaction time and other factors impact on the performance of the fiber electrically conductive . Polyester fiber by controlling the reaction conditions , the effective absorption of polyaniline . Experiment the following conclusions: ( 1) situ polymerization of the polyester fiber for good conductive properties ; ( 2) oxidant concentration , doping acid concentration , reaction temperature and reaction time are significant factors affecting the electrical properties of the fibers , alkali the treatment can also be effective in improving the surface polarity of the polyester , and increase the amount of adsorption of the fiber of polyaniline . ( 3) using the in situ polymerization of polyaniline / polyester composite conductive fiber optimum conditions are : ammonium persulfate concentration was 0.6 mol / L , p-toluenesulfonic acid concentration of 1 mol / L , reaction time of 2 h , the reaction The temperature is 15 ℃ -25 ℃.

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CLC: > Industrial Technology > Chemical Industry > The chemical fiber industry > General issues > Basic theory
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