Abstract
Different amounts of urushiol were added to a fixed amount of polyacrylonitrile (PAN) to make nanoscale urushiol/PAN films by the electrospinning method. Electrospinning solutions were prepared by using dimethylformamide (DMF) as the solvent. Nanoscale urushiol/PAN films and conductive Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)/polyvinyl pyrrolidone (PVP) films were prepared by electrospinning. In order to prepare an electrospun sandwich nanoscale film, urushiol/PAN films were deposited as both the top and bottom layers and PEDOT:PSS/PVP film as the inner layer. When the PAN to urushiol ratio was 7:5, the fiber diameter ranged between 150 nm and 200 nm. The single-layer urushiol/PAN film could not be etched after being immersed into 60%, 80%, and 100% sulfuric acid (H2SO4) for 30 min, which indicated the improved acid resistance of the PAN film. The urushiol/PAN film was used to fabricate the sandwich nanoscale films. When the sandwich film was immersed into 80% and 100% H2SO4 solutions for 30 min, the structure remained intact, and the conductive PVP film retained its original properties. Thus, the working environment tolerability of the functional PVP film was increased.
Highlights
2 g of polyvinyl pyrrolidone (PVP) was added to the resultant mixture and stirred with a magnetic stirrer at 450 r/min for 8 h to prepare a mixture of PEDOT:PSS/PVP
PVP in the middle layer was immediately dissolv the sandwich nanoscale film was immersed in water; the nanoscale PVP fil peared, resulting in a separation phenomenon, which limits the application of ma tional nanoscale PVP films due to their hydrolysis and intolerance to acids
The ages of the electrospun urushiol/PAN: PEDOT:PSS/PVP:urushiol/PAN fil shiol/PAN mixing ratio = 7:5; urushiol/PAN films were deposited at the top an of a PEDOT:PSS/PVP film) immersed in 80% and 100% sulfuric acid for 30 min are displayed in Figure 9c,d, respectively
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Nanomaterials 2021, 11, 957 structure, and this significantly improved the alkali resistance of the RL/PAMAM film. Wu et al [27] added raw lacquer to PVP and prepared nanofiber films by electrospinning, which improved the mechanical properties and acid resistance of the PVP films. The addition of urushiol can improve the shortcomings of low mechanical strength and chemical stability of PAN films. To further explore the use of urushiol/PAN nanoscale films as protective materials, a sandwich structure of urushiol/PAN-coated PVP nanoscale film was prepared by electrospinning. This sandwich nanoscale film was immersed in sulfuric acid and pure water to investigate its corrosion resistance
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