Treatment by Physical Interaction

After physical treatment, inorganic fillers can be covered with either low-weight (through a surfactant) or high-weight organic molecules (through an encapsulation with polymer). Since secondary forces (like van der Waals, hydrogen, and electrostatic forces) can theoretically produce an adhesion of 7.0 x 102 to 7.0 x 103 MPa, in comparison with chemical bonds possessing specific adhesive forces of 7.0 x 103 to 7.0 x 104 MPa, the effect of surface modification based on physical interactions is, however, less significant than that of a chemical treatment.

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