Macromolecular Research

  • 제16권7호
  • /
  • Pages.614-619
  • /
  • 2008
  • /
  • 1598-5032(pISSN)
  • /
  • 2092-7673(eISSN)
한국고분자학회 (The Polymer Society of Korea)
권호 표지

A Study on the Copolymerization Kinetics of Phenylethyl Acrylate and Phenylethyl Methacrylate

  • Lee, Han-Na (Dept. of Materials Science and Engineering, Research Center for Biomolecular Nanotechnology, Gwangju Institute of Science and Technology) ;
  • Tae, Gi-Yoong (Dept. of Materials Science and Engineering, Research Center for Biomolecular Nanotechnology, Gwangju Institute of Science and Technology) ;
  • Kim, Young-Ha (Dept. of Materials Science and Engineering, Research Center for Biomolecular Nanotechnology, Gwangju Institute of Science and Technology)
  • 발행 : 2008.10.31
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초록

Copolymers of phenyl alkyl acrylates/methacrylates are used clinically as soft materials for the foldable intraocular lens (IOL) to treat cataracts. In this study, copolymers of 2-phenylethyl acrylate (PEA) and 2-phenylethyl methacrylate (PEMA) of various compositions were prepared using free radical polymerization in solution. The composition of the copolymers was determined by $^1H$-NMR analysis. The reactivity ratios of the monomers were calculated using the conventional Fineman-Ross or Kelen-Tudos method. The reactivity ratio of PEA ($r_1$) and PEMA ($r_2$) were estimated to be 0.280 and 2.085 using the Kelen-Tudos method, respectively. These values suggest that PEMA is more reactive in copolymerization than PEA, and the copolymers will have a higher content of PEMA units. The glass transition temperature ($T_g$) of the copolymers increased with increasing PEMA content. The molecular weight and polydispersity indices ($M_w/M_n$) of the polymers were determined by GPC. Overall, these results are expected to be quite useful in applications to foldable soft IOL materials.

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