Final answer:
Between chains of polypropene, the intermolecular forces present are van der Waals forces, more specifically, London dispersion forces, due to temporary, induced dipole interactions.
Step-by-step explanation:
The type of intermolecular forces that exist between chains of polypropene are primarily van der Waals forces, specifically London dispersion forces. Polypropene is a nonpolar polymer and does not have the necessary hydrogen bonding to highly electronegative atoms like oxygen, nitrogen, or fluorine that are required for hydrogen bonding. Additionally, it does not contain ions for ionic bonding, and the chemical linkages between the atoms within the
polymer chain are covalent bonds, which are not considered intermolecular forces. Therefore, the intermolecular forces present are due to temporary, instantaneous dipole moments that induce dipoles in adjacent nonpolar molecules, leading to attraction between them.