Characteristics of Plasticizers According to Their Chemical Structure

2 Characteristics of Plasticizers According to Their Chemical Structure 

Plasticizers can also be divided in groups according to their chemical structure [36, 39-42, 45]. 

Phthalic Acid Esters. Di(2-ethylhexyl) phthalate (DOP) and diisooctyl phtha-late (DIOP) are largely used for PVC and its copolymers with vinyl acetate or propene. They have well-balanced properties as plasticizers, i.e., they have affinity to these polymers, they produce a good solvation, and they maintain a good flexibility of finished products at low temperature. Their volatility is low and their water resistance is good. 

Diisodecyl phthalate (DIDP), octyl decyl phthalate (ODP), and dicapryl phthalate (DCP) have a lower solvency. For this reason they are used in stable PVC pastes. 

Butyl octyl phthalate (BOP), butyl decyl phthalate (BDP), and butyl benzyl phthalate (BBP) are mixed together to obtain special creep properties or to modify the processibility of PVC blends. These plasticizers have a good solvency and they are used to adjust melt viscosity and fusion time in the production of high-quality foams. 

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