Prompt Description

A schematic diagram illustrating the synthesis of a polyaniline/cuttlebone composite material is presented. The specific experimental steps are as follows: (1) Pretreatment of Raw Materials: The raw cuttlebone material is initially immersed in a 25% ethanol solution to remove impurities. Subsequently, the material is rinsed multiple times with distilled water to eliminate any residual ethanol. The purified cuttlebone material is then dried in a 40°C constant temperature drying oven for 24 hours to obtain a dry and pure material, preparing it for subsequent composite formation. Afterwards, the cuttlebone is immersed in a 3.2g/L dopamine solution in 10 mM Tris buffer within a suction flask, vacuumed, and soaked for 6 hours. (2) Synthesis of Polyaniline/Cuttlebone Composite: 150 mL of deionized water, 2 mL of aniline, and 12 g of boric acid are sequentially added to a 250 mL round-bottom flask and stirred for 1 hour to obtain solution A. Next, 5 g of ammonium persulfate is dissolved in 10 mL of deionized water to obtain solution B. Finally, 5 g of the purified cuttlebone and solution B are added to solution A, vacuumed for 0.5 hours, and allowed to stand for 12 hours. After standing, the sample solution is filtered using a vacuum pump and washed multiple times with deionized water and ethanol to remove unreacted aniline salts and other impurities. The resulting solid product is then placed in a petri dish to air dry naturally until completely dry, yielding the composite material. (3) PDMS/PANI Modification: A specific 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). The PANI-modified cuttlebone is then immersed in the solution for 10 minutes. Finally, the modified sponge is cured at 100 degrees Celsius for 1 hour. The experimental flowchart should be concise.