| The conducting polymer has become an ideal conductivity controlled material in the functional material field due to its conductivity can varied reversibly from insulator to semiconductor and even to metal (10-9~105S/cm) only through simple doping/de-doping method. Among all the conducting polymers, poly(3,4-ethylenedioxythiophene)(PEDOT) has a high conductivity, good thermal stability and chemical stability, so it has become a new research focus.In this paper, the composite conducting fibers of poly(3,4-ethlenedioxythiophene) doped with poly(4-styrenesulfonate) were fabricated by a wet-spinning technique, its electric conductivity as well as mechanical properties has been investigated. Such researches have important scientific and application value. The main results are as follows:1. poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate)(PEDOT/PSS) with a high conductivity was synthesized by Chemical Oxidation polymerization, and the resulted PEDOT/PSS exhibits good water dispersion.2. The aqueous solution of PEDOT/PSS was mixed with polyvinyl alcohol (PVA) and then wet spinning was carried out. The conductivity of prepared PEDOT/PSS- PVA composite fibers were as high as 34.5S/cm. Effects of PEDOT/PSS content and draw ratio on the conductivity of composite fibers were investigated. Results show that the micro-fibers increased with the increasing of draw ratios, and PEDOT/PSS-PVA composite fiber’s conductivity, crystal properties, thermal stability and mechanical properties were improved also.3. PEDOT-coated conducting textile was prepared via in-situ polymerization obtained a low surface resistance of conductive fabric with the resulted PEDOT/PSS-PVA fabric as the substrate (in-situ PEDOT/PSS-PVA). The detect results show that the minimum surface resistance (SR) of in-situ PEDOT/PSS-PVA is 3~4Ω/□. The in-situ PEDOT/PSS-PVA has good near-infrared shielding ability and electromagnetic shielding properties. It is expected to further obtain military applications. |
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