Acetylated Lignin Added PBAT Functional Film with Enhanced Dispersibility
발표자
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초록
내용
To lower the production cost of PBAT-based biodegradable plastics, various attempts to blend PBAT with natural polymers are actively ongoing. Lignin, a lignocellulosic biomass, is also one of the efficient additives within PBAT. However, the agglomeration of lignin that can occur during polymer processing significantly reduces the dispersibility of lignin in PBAT. Therefore, pretreatment and chemical modification of the lignin is essential. In this study, lignin was modified through acetylation to prevent self-aggregation during the polymer processing of the PBAT/Lignin film. FTIR, 31P NMR, and XPS were used to determine the acetylation degree of lignin. Morphological and rheological studies were used to clarify the dispersibility and interaction between acetylated lignin and PBAT, The mechanical and thermal properties of the PBAT/Lignin films were analyzed. Lastly, the UV and water vapor blocking performance of the PBAT/Lignin film was assessed, and the ability of lignin to prevent the photodegradation of PBAT was evaluated through long-term UV irradiation.