Simultaneous interpenetrating polymer networks based on epoxy–acrylate combinations

✍ Scribed by A. A. Baidak; J. M. Liégeois; L. H. Sperling

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 259 KB
• Volume: 35
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19970915)35:12<1973::aid-polb12>3.0.co;2-z

✦ Synopsis

Simultaneous interpenetrating polymer networks (SINs) based on epoxy/ poly(n-butyl acrylate) systems were synthesized at 120ЊC. The polymerization kinetics were studied both in situ by Fourier Transform Infrared Spectroscopy (FT-IR). Three key events occurred during the polymerization, namely the gelation of the network I, gelation of the network II, and phase separation of one polymer from the other. Thus, metastable phase diagrams describing the relations between the three events were constructed. Three-dimensional tetrahedrons characterizing the four-component system (the two monomers and the two polymers) allow the visualization of these three key events and also define some critical points, for example, the loci of the points where simultaneous gelation of the two networks occurs. The inside of the tetrahedron was also investigated using partially reacted model compounds. These tetrahedrons can be used as guidelines for setting up a synthesis strategy leading to desired morphologies.