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

In this: publication
By this: publisher
In this Subject: <a title="Chemical Engineering" href="/content/subcat?j_subject=165&j_availability=">Chemical Engineering ,&nbsp; <a title="General & Civil Engineering" href="/content/subcat?j_subject=188&j_availability=">General & Civil Engineering
By this author: Boiko Y.M.

Author: Boiko Y.M.

Source: Mechanics of Composite Materials, Volume 39, Number 1, January 2003 , pp. 89-98(10)

Publisher: Springer

Buy & download fulltext article:

Price: $47.00 plus tax (Refund Policy)

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 sigma -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 alpha 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.