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Relationship between the Contact Time of Polymer Surfaces and Their Bond Strength

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Mechanics of Composite Materials Aims and scope

Abstract

Films of amorphous polystyrene (PS) (mono- and polydisperse polymers) and poly(phenylene oxide) (PPO) were brought into contact at a low pressure (0.8 MPa) under temperatures T h from 62 to 156°C. The contact time t was varied from 2 min to 96 h. Partially “healed” PS-PS, PPO-PPO, and PS-PPO contacts were broken at room temperature and the shear strength in the contact zone was measured. The experimental σ-t curves were analyzed in double logarithmic coordinates. The value of for the three interfaces investigated was within 0.07-0.32 at T h < T g, where is the glass transition temperature. In the same way, the data on strength development taken from the literature for a number of polymer-polymer contacts formed both above and below T g were analyzed, and the range of variations in α proved to be roughly the same (0.05-0.35). The results obtained are discussed within the framework of theories of molecular dynamics for the polymer bulk and the interface.

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  1. A. F. Ioffe Physico-Technical Institute, Russian Academy of Sciences, St. Petersburg, Russia

    Yu. M. Boiko

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Boiko, Y.M. Relationship between the Contact Time of Polymer Surfaces and Their Bond Strength. Mechanics of Composite Materials 39, 89–98 (2003). https://doi.org/10.1023/A:1022995807693

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