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Distribution of morphology and transport properties of water vapor in injection-molded biodegradable aliphatic polyester
Article first published online: 27 APR 2010
DOI: 10.1002/app.32137
Copyright © 2010 Wiley Periodicals, Inc.
1097-4628/asset/cover.gif?v=1&s=e26a028b9ea53b1db3bdcdf154d4f4fab00f90a5 "Journal of Applied Polymer Science")
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How to Cite
Partini, M., Gorrasi, G. and Pantani, R. (2010), Distribution of morphology and transport properties of water vapor in injection-molded biodegradable aliphatic polyester. J. Appl. Polym. Sci., 117: 2831–2838. doi: 10.1002/app.32137
Publication History
- Issue published online: 24 MAY 2010
- Article first published online: 27 APR 2010
- Manuscript Accepted: 22 JAN 2010
- Manuscript Received: 7 NOV 2009
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Keywords:
- biodegradable;
- diffusion;
- injection molding;
- polyesters;
- morphology
Abstract
A biodegradable polyester, poly(tetramethylene dodecanedioate), was injection molded in a rectangular cavity. Thin sections were sliced from molded samples starting from the skin. The morphology distribution inside the molded samples was studied by X-ray analysis. The diffusion and solubility coefficient of water vapor were then measured using the microgravimetric method at the temperature of 30°C. Results show that morphology developed during the process influences the diffusion of water molecules through the polymer matrix. In particular, a direct influence of crystalline degree on the sorption and diffusion parameters was identified. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010