Miscibility of poly(2-bromoethyl methacrylate) with various polymethacrylates

The miscibility behavior of poly(2-bromoethyl methacrylate) (PBEMA) with various polymethacrylates was investigated by differential scanning calorimetry. PBEMA is only miscible with poly-(tetrahydrofurfurylmethacrylate) (PTHFMA) and is immiscible with poly(methyl methacrylate), poly(ethyl methacrylate), poly(n-propyl methacrylate), poly(isopropyl methacrylate), poly(n-butyl methacrylate), and poly(cyclohexyl methacrylate). PBEMA/PTHFMA blends did not exhibit lower critical solution temperature (LCST) behavior and degraded before phase separation could be induced. In comparison, PBEMA has a more limited degree of miscibility with polymethacrylates than poly(2-chloroethyl methacrylate). 20 ref.--AA