基于PVA纳米纤维的香烟焦油过滤装置研究

烟气中的焦油不仅对人体健康有害，并对环境造成一定的危害。该文采用静电纺丝技术制备了聚乙烯醇（PVA）纳米纤维，设计并实现了一种基于该纳米纤维薄膜的过滤装置，用于烟气中焦油的去除。滤膜吸收焦油后的质量增益是评价滤膜过滤效率的依据，该文研究了纤维直径、薄膜厚度和空气流速对滤油片的吸油量和焦油饱和度的影响，利用X射线光电子能谱分析了聚合物滤油片中可能存在的吸附物质。该工作展示了一种新型的过滤装置，可用于滤除、吸附香烟中的有害物质。

Electrospun PVA Nanofiber Filters for Tar Removal from Smoking Stream

Tar in smoking stream is detrimental to human health and has also exerted pressure on environment. In this work, the polyvinyl alcohol (PVA) nanofibers were fabricated using an electrospinning technique and a filter based on the nanofiber film was designed and implemented to eliminate tar from smoke stream. The filtering efficiency was evaluated by the mass gain of film after absorbing the tar. The fiber diameter, thickness of films and the inhaling rate affecting the quantity of tar absorption and the saturation of tar in filter were also investigated. The possible alien substances to the polymer filters were analyzed by X-ray photoelectron spectroscopy. The work demonstrates a novel filter device to abate hazardous matters in cigarette both for human health and a clean environment.