Development of Hydrophobic Melamine Foam Using Acetylated Lignin for Efficient Water Separation; [효율적인 유수분리를 위한 아세틸화 리그닌을 이용한 소수성 멜라민 폼 개발]

초록

In this study, lignin was acetylated to enhance its hydrophobicity and applied to a porous substrate to evaluate its oil-water separation performance. Through the acetylation reaction, hydroxyl groups in lignin were reduced and acetyl groups were introduced, resulting in changes in surface properties. Chemical analyses confirmed that the chemical modification of lignin was successfully achieved. Water contact angle measurements showed a contact angle of approximately 150°, indicating a significant improvement in hydrophobicity. Morphological analysis confirmed that the porous structure of the substrate was maintained, and thermal analysis demonstrated that the composite foam preserved its structural stability. Oil-water separation experiments revealed high separation efficiency and filtration performance. Overall, the results confirm that acetylation is an effective surface modification method and demonstrate the strong potential of lignin as a functional material for oil-water separation applications. © 2026, Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

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