Abstract
Nanofibrous membranes for smoke filtration and flavor retention is developed from poly(vinyl alcohol) (PVA) and menthol/β-cyclodextrin inclusion complexes by solution electrospinning. The inclusion complexes of menthol and β-cyclodextrin with an embedding ratio of 64.6% are first prepared by a coprecipitation method, followed by mixing with PVA aqueous solutions for subsequent electrospun fabrication of nanofibrous films. The optimized nanofibrous films possess a high menthol content of 3.9 wt% and satisfied mechanical properties. The flavor compound, menthol, can be efficiently retained in the inclusion complexes and nanofibrous films while free menthol volatilizes rapidly under ambient condition. In addition to the sustained flavor release, the nanofibrous films show promise for air filtration, as evidenced by the reduced harmful substance contents when cigarette smoke as a model substance passes through the film. Moreover, this nanofibrous film is a biocompatible material, which could be potentially useful in the fields of nanofiltration and tobacco processing.
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