Detail mechanism of plasticizer

Plasticizer plasticizer molecular mechanism of action is inserted into the polymer molecule chains, weakened stress between the polymer chains, results in increased mobility of the polymer chains, reduces the crystallization of the polymer chains degrees, so that the plastic polymer is increased, which is a major factor against the plasticizing effect of stress between the polymer chains of the molecular chain of the polymer crystallinity, while they depend on the polymer chemistry and physical structure. Metallic stearate
When the plasticizer is added to the polymer, the plasticizer molecules with each other, to give a polymer plasticizing the interaction between molecules is important. Unless all these interactions (between plasticizers and plasticizer, plasticizer and between the polymers, polyethylene and polymer material and between) are the same size, it may not plasticizing effect and anti-plasticized effect. Van der Waals forces in the state of aggregation of matter exist between molecules and molecules of a weak gravity. Van der Waals dispersion forces, including the induction force and the orientation force. Van der Waals force range of only a few angstroms.
Dispersion force dispersion force is present in all polar or non-polar molecules, is due to a slight transient dipole dipole interaction is so near to the poles adjacent state resulting from a gravity. But only in the non-polar systems such as benzene, polyethylene or polystyrene, the dispersion force component of the more significant only account. plasticizer
When induction force with a fixed dipole molecules in a non-polar molecules adjacent to induce an induced dipole that, between the permanent dipole induced dipole and the gravitational force is called induction. Since π electron aromatic compounds can be highly polarized so the impact is particularly strong, such as low molecular weight esters and between polystyrene and polyvinyl acetate or benzene, mainly between the induction force.
When the polarity of the molecule orientation force close to each other, due to the inherent causes the orientation of the dipole intermolecular force is called an orientation force. PVC plasticizer such as esters or cellulose nitrate is a representative example of the interaction.
Bond containing-OH group or-NH-group of molecules, such as polyamide, polyvinyl alcohol, cellulose, etc., between the molecules, and sometimes can form hydrogen bonds within the molecule. Bond is a relatively strong interaction key, they do not interfere plasticizer molecule inserted between the polymer molecules, if the hydrogen distribution along the polymer chain more dense corresponding plasticizer inserted against the stronger effect. Therefore, the plasticizer and the polymer molecules required to produce a similar effect of a strong. The other hand, as the temperature increases, the molecular attraction between the decrease of the hydrogen significantly weakened, which is due to thermal motion of molecules hinder orientation of the polymer molecules.