The influence of molecular weight on plasticizer retention
For this reason, the PVC Geomembrane Institute (PGI) has developed the PGI-1104 Specification, which requires an average plasticizer molecular weight greater than or equal to 400 to ensure long-term plasticizer retention in the PVC geomembrane.
The influence of molecular weight on plasticizer retention
For this reason, the PVC Geomembrane Institute (PGI) has developed the PGI-1104 Specification, which requires an average plasticizer molecular weight greater than or equal to 400 to ensure long-term plasticizer retention in the PVC geomembrane. ASJC Scopus subject areas Geotechnical Engineering and Engineering Geology Polymers and Plastics
The influence of molecular weight - ResearchGate
l.() 0 0 N -§ re 2 28 The influence of molecular weight on plasticizer retention ~--A key change to specification PG/-1104 improves understanding of long-term PVC geomembrane performance
The influence of molecular weight on plasticizer retention
Conversely, increasing the plasticizer molecular weight increases the retention because, as the molecular weight increases, the size and length of the plasticizer increase, which makes it more difficult for the plasticizer to diffuse from the PVC molecular structure to the geomem- brane surface.
The influence of molecular weight on plasticizer retention
These data show that increasing the molecular weight of the plasticizer increases the resistance to evapo- ration. The increased retention is caused by the greater difficulty for larger plasticizer molecules to dif- fuse from inside the sheet to the surface-especially as the tortu- osity increases. 70
