Potassium hydroxide koh

Multi-wall carbon nanotubes (MWCNTs, 98%, Sigma Aldrich, Seoul, Korea), zinc acetate dihydrate (Zn(OAc)₂∙2H₂O, 98%, Duksan, Seoul, Korea), hydrochloric acid (HCl, 35%, Duksan, Seoul, Korea), Sulfuric acid (H₂SO₄, 98%, Duksan, Seoul, Korea), ethanol (CH₃CH₂OH, 99.9%, Duksan, Seoul, Korea), 8-hydroxyquinoline (99%, Junsei Chemical, Tokyo, Japan), aluminum chloride (AlCl₃, 99%, Fluka, Seoul, Korea), and potassium hydroxide (KOH, 85%, DAEJUNG, Seoul, Korea). All chemicals were used as received without any further purification.

PBEAS and nylon 6,6 (as a negative control) fishing nets and monofilaments were kindly provided by National Institute of Fisheries Science (Busan, Korea). The molar ratio of succinic acid and adipic acid, which are dicarboxylic acid components, was 97:3, and the molar ratio of 1,4‐butanediol and ethylene glycol, which are glycol components, was 98:2. The reaction input molar ratio of the dicarboxylic acid component and the glycol component was 1: 1.25. The mean diameter of each fishing net is 280 µm. Cellulose powder suitable for thin‐layer chromatography (TLC) grade with a particle size of less than 20 µm was obtained from Sigma–Aldrich. Fertilizer and rabbit feed for preparing compost were provided from KG Chemical and Hagen, respectively. Sea sand, potassium hydroxide (KOH), and barium chloride (BaCl₂) for measuring the biodegradability of the fishing net were supplied from Daejung (Siheung, Korea).

Diethyl-2,5-dihydroxyterephthalate and hydrochloric acid (HCl) were purchased from Sigma Aldrich Chemical Co. (Yongin, Korea). DHN, HBA, acetic anhydride, and bromoethane were purchased from TCI Co. (Seoul, Korea), and anhydrous potassium carbonate (K₂CO₃), N,N′-dimethylformamide (DMF), and potassium hydroxide (KOH) were purchased from Daejung Co. (Seoul, Korea).