The interaction force of epoxy soybean oil plasticizer in polymers
When plasticizers are added to polymers, The interaction force between plasticizers and polymer molecules, Has a significant impact on plasticizing effect. There are two forces between its molecules: Van der Waals forces and hydrogen bonds. The presence of two forces jointly affects the plasticizing effect of plasticizers.
(1) Van der Waals forces. Fan Dehua's strength includes dispersionカ, induceカThree types of orientation forces. It is a substance that always exists between polymer molecules or between non bonded atoms within a molecule, Weaker, A guide with a small scope of actionカ. It has additivity, So sometimes it's very big, Resulting in significant hindrance to the insertion of plasticizer molecules between polymer molecules.
(2) hydrogen bonding . For those containing－OH Group or－NH－Molecules of functional groups, Like polyamide, Polyvinyl alcohol, etc, Molecules can form hydrogen bonds between themselves. Hydrogen bonding is a type of bond with strong interactions,
Its existence will affect the insertion of plasticizer molecules into the polymer molecules. Especially for polymer molecules with a high number of hydrogen bonds, it is difficult to plasticize them. When the temperature rises, Due to the thermal motion of molecules, the orientation of polymer molecules is hindered, The effect of argon bonds will correspondingly weaken.
