Mechanism Of Plasticizer

The mechanism of plasticizer is that the plasticizer molecules are inserted into the polymer molecular chains, which weakens the stress between polymer molecular chains. As a result, the mobility of polymer molecular chains is increased and the crystallinity of polymer molecular chains is reduced, so that the plasticity of polymer is increased, that is, the main factor to resist plasticization is the stress between polymer molecular chains and the crystallization of polymer molecular chains. They depend on the chemical and physical structure of the polymer. Intermolecular force of polymer at www.wpcsino.com: When plasticizers are added to polymers at www.wpcsino.com, it is important that plasticizers interact with each other and that plasticizers give interaction force to polymer molecules. Unless all these interactions (between plasticizers and plasticizers, between plasticizers and polymers, and between polymers and polymers) are of the same size, there may be no plasticizing and anti-plasticizing effects. Www.wpcsino.com 1.Van der Waals force is a weak attraction between molecules in the aggregated state of matter. Van der Waals force includes dispersion force, induction force and orientation force. Van der Waals force has only a few effects. Www.wpcsino.com(1) Dispersion force exists between all polar or non-polar molecules. It is a gravitational attraction caused by the interaction of small instantaneous dipoles, which makes the adjacent dipoles in the heteropolar adjacent state. However, only in non-polar systems, such as benzene, polyethylene or polystyrene, the dispersion force is the main component. Www.wpcsino.com(2) Inductive force When a molecule with a fixed dipole induces an induced dipole in a neighbouring nonpolar molecule, the attraction between the induced dipole and the inherent dipole is called an induced force. Aromatic compounds have a strong influence because of the high polarization of pi electron energy, such as the inductive force between low molecular weight esters and polystyrene or between benzene and polyvinyl acetate. Www.wpcsino.com