Print: | ISSN 0256-1115 |
Online: | ISSN 1975-7220 |
Korean Journal of Chemical Engineering,
Vol.24, No.4, 664-669, 2007 Kinetics for free radical solution polymerization of heptadecafluorodecyl (meth)acrylate in supercritical carbon dioxide
Free radical solution polymerization of heptadecafluorodecyl acrylate (HDFDA) and heptadecafluorodecyl methacrylate (HDFDMA) was carried out by using 2,2'-azobisisobutyronitrile (AIBN) as the initiator in supercritical carbon dioxide (scCO2). We performed solution polymerization with changing initiator concentration, temperature and polymerization time to study the polymerization kinetics. A nonlinear least square method and dead-end theory were used to determine the constant, K (K=(kp√f )/√fdkt) and initiator decomposition rate constant (kd) from experimental data. kd was measured as 3.77×10-5 s-1 at 62.7 ℃ for poly(HDFDA) and 2.71×10-5 s-1 at 62.5 ℃ for poly(HDFDMA), respectively, by nonlinear least square method.
Keywords:
Supercritical Carbon Dioxide; Heptadecafluorodecyl (meth)acrylate; Free Radical Solution Polymerization; Kinetics; Decomposition Rate Constant (kd); Nonlinear Least Square Method; Dead-end Theory
[References]
[Cited By]
|