Prompt Description

A schematic diagram illustrating the synthesis of a polyaniline/cuttlebone composite material. The specific experimental steps are as follows: (1) Pretreatment of raw materials, including impurity removal and polydopamine coating: First, the dried cuttlebone material is immersed in a 25% ethanol solution to remove non-target substances from the raw material. Then, the immersed material is repeatedly rinsed with distilled water to ensure the removal of any residual ethanol solution. Finally, the purified cuttlebone material is dried in a 40 °C constant temperature drying oven for 24 h to obtain dry and pure cuttlebone material, preparing it for subsequent composite formation. Subsequently, the cuttlebone is immersed in a 3.2 g/L dopamine solution in 10 mM Tris buffer within a suction flask, vacuumed, and soaked for 6 hours. (2) Synthesis of the Polyaniline/Cuttlebone Composite: Add 150 mL of deionized water, 2 mL of aniline, and 12 g of boric acid sequentially to a 250 mL round-bottom flask, and stir for 1 h to obtain solution A. Next, dissolve 5 g of ammonium persulfate in 10 mL of deionized water to obtain solution B. Finally, weigh 5 g of the purified cuttlebone and add it along with solution B to solution A. Apply vacuum for 0.5 h, then allow to stand for 12 h. After standing, filter the sample solution using a vacuum pump and wash it repeatedly with deionized water and ethanol solution to remove unreacted aniline salts and other impurities. After washing, place the resulting solid product in a Petri dish and allow it to air dry naturally. Once the solid is dry, the composite material is obtained. (3) PDMS/PANI Modification: A certain amount of polydimethylsiloxane prepolymer and curing agent are added to ethyl acetate at a weight ratio of 10:1 and stirred thoroughly to form a homogeneous solution (2 mg/mL). Then, the PANI-modified cuttlebone is immersed in the above solution for 10 min. Finally, the modified sponge is cured at 100 degrees Celsius for 1 h.