July 1, 1993

Hydrophilic Edible Films: Modified Procedure for Water Vapor Permeability and Explanation of Thickness Effects

Key Points

Key points are not available for this paper at this time.

Abstract

ABSTRACT The ASTM E96 Standard Method for determining water vapor permeability (WVP) was modified for hydrophilic edible films. Accurate measurement of relative humidity conditions and maintenance of 152 m/min air speeds were essential outside the test cups. The WVP Correction Method was developed to account for the water vapor partial pressure gradient in stagnant air layer of the test cup. Errors were as high as 35% without this correction. Applying these guidelines explained commonly observed thickness effects on WVP values of hydrophilic films. Relative humidity was the cause of observed thickness effects.

Bookmark

Cite This Study

McHugh et al. (Thu,) studied this question.

synapsesocial.com/papers/69ded5157702a00918b0ce9f https://doi.org/https://doi.org/10.1111/j.1365-2621.1993.tb09387.x

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

Bookmark