Impact of polymer processing on sorption of benzaldehyde vapor in amorphous and semicrystalline polypropylene |
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| Authors: | Ying Qin Maria Rubino Rafael Auras Loong‐Tak Lim |
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| Affiliation: | 1. Center for Green Manufacturing, University of Alabama, Tuscaloosa, Alabama;2. School of Packaging, Michigan State University, East Lansing, Michigan;3. Department of Food Science, University of Guelph, Guelph, Ontario, Canada |
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| Abstract: | In this study, organic vapor sorption properties of different polypropylene (PP) forms (resin, sheet, thermoformed sheet, and atactic PP) at 25°C were investigated. The sorption of benzaldehyde at five vapor activities was studied by using a continuous gravimetric method. The sorption of benzaldehyde vapor in PP exhibited different behaviors among resin, sheet, and polyhedron thermoformed sheet. The experimental results demonstrated that the extrusion and thermoforming processes used for forming these parts had a great impact on the sorption behavior because of the changes in surface and bulk morphologies, especially at high vapor activities. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008. |
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| Keywords: | sorption polypropylene gravimetric method processing morphology |
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