Mechanically stable melamine sponge assisted with cellulose nanofiber for marine oil spill clean-up
발표자
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초록
내용
An immediate removal of marine oil spills is required to prevent secondary pollutions. Porous adsorbents including sponge are evaluated as efficient clean-up materials for quick oil adsorption due to their high surface area. However, traditional sponge exhibit shrinkage under the high pressure of a pump for continuous separation of large-scale marine oil spills leading to reduced separation efficiency. Herein, polyvinyl alcohol (PVA) and cellulose nanofiber (CNF) were introduced to increase the mechanical stability of the melamine sponge. Distribution of nanoscale CNF on the surface of the porous structure enables continuous oil/water separation without considerable shrinkage of the sponge. Moreover, due to the hydrogen bonding between PVA and CNF layers, porous structure remains stable throughout the continuous oil clean-up process. Consequently, it is promising that introducing PVA and CNF on melamine sponge can work as a sponge-based adsorbent for large-scale oil spill clean-up.