Plasticizer retention in PVC geomembranes — Korea University
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
GSP-142: PLASTICIZER RETENTION IN PVC GEOMEMBRANES - ResearchGate
GSP-142: PLASTICIZER RETENTION IN PVC GEOMEMBRANES 1 PLASTICIZER RETENTION IN PVC GEOMEMBRANES T. D. Stark1, H. Choi2, and P. W. Diebel3 1Department of Civil and Environmental...
Plasticizer retention in PVC geomembranes — University
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.
PLASTICIZER MOLECULAR WEIGHT AND PLASTICIZER RETENTION IN PVC
The mechanisms controlling plasticizer retention in contact with these three media, air, liquid, or a solid, are described below. 2.1 Plasticizer retention in air Volatile loss or...
Clarifying the nomenclature of Elvaloy-based geomembranes
A KEE molecular weight of 100,000 grams/mole is 250 times higher than currently required (400 grams/mole) by the FGI 1117 specification for PVC geomembranes. KEE is a solid-phase (polymeric) plasticizer, not liquid, which helps explain its high molecular weight and resistance to migration.
