کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
595914 | 1454028 | 2009 | 4 صفحه PDF | دانلود رایگان |
Cork is a natural cellular material. As fabricated cork stoppers for wine bottles are cylindrical with a uniform cross-sectional diameter. Upon removal from a bottle, the stopper shows a smaller and slightly non-uniform diameter. If a used cork stopper is immersed in water or water vapour at a sufficiently high temperature, the original dimensions can be recovered in a time interval of a few minutes. The kinetics of dimensional recovery in air and water (liquid and vapour) at different temperatures were experimentally determined. Water absorption is determinant of a fast recovery rate. A simple viscoelastic model is used to explain the experimental results. Since the mechanical properties are also restored, the stopper can be re-used, provided the damage due to the cork-screw used to remove the stopper is confined to its bulk.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 344, Issues 1–3, 20 July 2009, Pages 97–100