Chapter
May 7, 2012
Plasticizer Retention in PVC Geomembranes
Authors: T. D. Stark, H. Choi, and P. W. DiebelAuthor Affiliations
Publication: Waste Containment and Remediation
Abstract
Plasticizers are used to make PVC flexible so it can be used as a geomembrane for containment purposes. Plasticizers can migrate from PVC geomembranes over time because of contact with air, liquid, and an absorbent solid material. Plasticizer migration can reduce the flexibility of PVC geomembranes. This paper discusses the three mechanisms of plasticizer migration and the factors influencing these mechanisms, such as plasticizer molecular weight and linearity of plasticizers. The paper recommends that a minimum average plasticizer molecular weight of 400 be used to ensure long-term plasticizer retention in the field. The weighted-average method for calculating the average molecular weight is recommended when two or more plasticizers are incorporated into the PVC geomembrane.
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Published In
Waste Containment and Remediation
Pages: 1 - 15
Copyright
© 2005 American Society of Civil Engineers.
History
Published online: May 7, 2012
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Affiliations
T. D. Stark
Department of Civil and Environmental Engineering, The University of Illinois, 2217 NCEL, 205 N. Mathews Ave., Urbana, IL 61801
H. Choi
Department of Civil Engineering, The University of Akron, 209D ASEC, Akron, OH 44325
P. W. Diebel
Canadian General Tower, Ltd., 52 Middleton Street, P.O. Box 160, Cambridge, Ontario, Canada, N1R 5T6
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