Synthesis of “block order” networks based on styrene-ethylene-butylene ABA triblock copolymer

✍ Scribed by A.G. Theodoropoulos; I.C. Konstantakopoulos; G.N. Valkanas

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 583 KB
• Volume: 30
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(94)90266-6

✦ Synopsis

Styrene-ethylene-butylene ABA triblock copolymer was modified via a novel post-polymerization reaction system, employing available styrene units and a bifunctional chloromethylated agent. The reaction was carried out in solution using a system based on carbon tetrachloride--cyclohexane mixtures and TIC14 catalysis. Using u.v. spectroscopy, it is demonstrated that the styrene units of the copolymer are reactive under the applied conditions. A series of products having various degrees of crosslinking was studied in order to characterize their swelling behaviour within a range of organic solvents. Data concerning the kinetics of the reaction, the porosity and the morphology of the final networks were also obtained.