In-situ monitoring on dynamics of solute transport in polymer films
作者： Julia S.P. Wong , Mingjun Hu , Dean Shi , Robert K.Y. Li , Janet S.S. Wong
DOI: 10.1016/J.POLYMER.2014.12.039
关键词:
摘要: Abstract A new and non-invasive technique based on confocal laser scanning microscopy (CLSM) that allows the visualization of penetrant diffusion in-situ has been developed was applied to quantify local solute dynamics in polymeric films. The effectiveness proposed demonstrated using a model penetrant, rhodamine-6G (Rh-6G), system polyvinyl alcohol (PVA) films with different degree cross-linking, content montmorillonite (MMT) clay. penetrant's transport across PVA were monitored by measuring time evolutions through thickness fluorescence intensity profiles. These profiles then converted concentration profiles, which allow coefficients (i.e. Rh-6G) be determined. methodology both single layer bilayers heterogeneity detected. Hence can multi-layer films, beneficial film developments for packaging filtration technology.
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