Copolymerization of N-vinylcaprolactam and glycidyl methacrylate:: Reactivity ratio and composition control Academic Article uri icon

abstract

  • AbstractFreeradical copolymerizations of Nvinylcaprolactam (VCL) and glycidyl methacrylate (GMA) were investigated to synthesize temperatureresponsive reactive copolymers with minimized compositional heterogeneity. The average copolymer composition was determined by Fourier transform infrared and nuclear magnetic resonance techniques. The reactivity ratios for VCL and GMA were found to be 0.0365 0.0009 and 6.44 0.36 by the FinemanRoss method and 0.039 0.006 and 6.75 0.29 by the KelenTudos method, respectively. When prepared by batch polymerization, VCLGMA copolymers had a highly heterogeneous composition and fractions of different solubilities in water. The use of a gradual feeding technique, which included the sequential addition of more reactive GMA monomer into the reaction, yielded copolymers with much more homogeneous composition. The produced copolymers with 0.9 and 0.11 fractional GMA contents preserved their temperatureresponsive properties and precipitated from aqueous solutions when the temperature exceeded 31C. The GMA units in the VCLGMA copolymers were capable of reacting with amino endfunctionalized poly(ethylene oxide) at room temperature to produce poly(Nvinylcaprolactam)poly(ethylene oxide) graft copolymers. 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 183191, 2006

published proceedings

  • JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

altmetric score

  • 3

author list (cited authors)

  • Qiu, X. P., & Sukhishvili, S. A.

citation count

  • 45

complete list of authors

  • Qiu, XP||Sukhishvili, SA

publication date

  • January 2006

publisher