Abstract
In this paper, the electrospinning of polyaniline under different dopant conditions were studied, the experimental phenomena was introduced, analyzed the relationship between the nanofiber surface morphology of DBSA-PANI/PAN, HCl-PANI/PAN and PTSA-PANI/PAN membranes and dopant type and content. The average diameter of DBSA-PANI/PAN electrospinning fiber membrane showed a decreasing trend when the content of doped polyaniline increased 1%-4%, and reached a minimum value of 780nm when the concentration was 4%. The strength of DBSA-PANI/PAN fiber membrane was the highest when the concentration of doped polyaniline was 1%, and the maximum intensity was 1.8×10 5 Pa. The average diameter of HCl/PANI/PAN fiber membranes decreases with the increase of doped polyaniline concentration, and it fluctuates up and down within a small range. When the content of doped polyaniline was increased to 4%, the average fiber diameter reached a minimum of 420 nm. The strength of the HCl-PANI/PAN fiber membrane was the highest when the concentration of doped polyaniline was 4%, and the maximum intensity was 1.08×10 5 Pa. The average diameter of the PTSA-PANI/PAN electrospun fiber membrane was the smallest at 2% doped polyaniline content and was 430 nm, the strength of PTSA-PANI/PAN fiber membrane is the highest when the content of doped polyaniline is 2%, and the maximum intensity is 3.9×10 4 Pa. In this paper, the basic research of doped polyaniline electrospinning nanofibers has made a useful supplement to the existing research of polyaniline nanofibers, and has a reference value for the application of polyaniline.
Highlights
In 1862, polyaniline was first used as a dyestuff in H.Letheby’s research
Polyaniline is obtainable as a raw material, is manipulated by synthetic processes, has a high conductivity, a unique doping performance, an excellent electromagnetic microwave absorbing performance, is environmental stabile, chemically stabile, and has optical properties[2]
The dodecyl benzene sulfonic acid (DBSA) is the most commonly doped macromolecule, which could effectively improve the dispersibility of the product and does not weaken the performance of polyaniline [3]
Summary
In 1862, polyaniline was first used as a dyestuff in H.Letheby’s research. There have been three phases of polyaniline research: the discuss on “Aniline Black” as a dyestuff, the research of organic semiconductor, and as well as extensive studies of conducting polymer[1]. In 1976 MacDiarmid found that polyaniline boasted unique properties such as electric conduction. Polyaniline is obtainable as a raw material, is manipulated by synthetic processes, has a high conductivity, a unique doping performance, an excellent electromagnetic microwave absorbing performance, is environmental stabile, chemically stabile, and has optical properties[2]. Electrospinning is a process that uses electrostatic forces to form fibers[4]. The polymer content of the electrospun polyaniline composite fiber influences the fiber morphology by changing the content of the PANI or the polymer to make a stable jet during electrospinning, which forms a stable fiber. The diameter and the electrical conductivity of the polyaniline composite fibers have increased and the mechanical properties have been enhanced under specific conditions [6]
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