화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.17, No.5, 346-351, May, 2009
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Ring-opening Polymerization of L-Lactide with Silica Supported Titanium Alkoxide Catalysts
Eonah Kim, Eun Woo Shin, Ik-Keun Yoo, Jin Suk Chung†, Younjin Hong1, and Youngjo Kim1
  • School of Chemical Engineering and Bioengineering, University of Ulsan, Ulsan 680-749, Korea
  • 1Department of Chemistry, Chungbuk National University, Chungbuk 361-763, Korea
E-mail:
TiCl(O-i-Pr)3/SiO2 and Ti(O-i-Pr)4/SiO2 were prepared by immobilizing chlorotitanium (IV) isopropoxide (TiCl(O-i-Pr)3) and titanium (IV) isopropoxide (Ti(O-i-Pr)4), to pretreated silica. The effect of the polymerization reaction conditions on the catalytic activity and characteristics of the resulting PLA were investigated. The catalytic conversion, molecular weight and polydispersity index (PDI) of the PLA produced on the titanium alkoxide supported catalysts increased proportionally with the reaction temperature. When the PLA was synthesized in bulk polymerization, the PLA produced with the supported catalysts had higher molecular weight than those with homogeneous catalysts. The melting temperature of the polymer produced with silica supported alkoxide catalysts was approximately 170-180 ℃.
Keywords:titanium alkoxide catalyst;silica support;polylactide;biodegradable polymer.
  1. Sawyer DJ, Macromol. Symp., 201, 271 (2003)
  2. Jacobsen S, Fritz HG, Dege P, Dubiose P, Jrme R, Ind. Crop. Prod., 11, 265 (2000)
  3. Lee HT, Lee DS, Macromol. Res., 10(6), 359 (2002)
  4. Shin BY, Jo GS, Kang KS, Lee TJ, Kim BS, Lee SI, Song JS, Macromol. Res., 15(4), 291 (2007)
  5. Drumright RE, Gruber PR, Henton DE, Adv. Mater., 12, 1844 (2000)
  6. Lunt J, Polym. Degrad. Stabil., 59, 145 (1998)
  7. Mohanty AK, Misra M, Hinrichsen G, Macromol. Mater. Eng., 276, 1 (2000)
  8. Moon SI, Kimura Y, Polym. Int., 52, 299 (2003)
  9. Yoo DK, Kim D, Lee DS, Macromol. Res., 14(5), 510 (2006)
  10. Lee JK, Ryou JH, Lee WK, Park CY, Park SB, Min SK, Macromol. Res., 11(6), 476 (2003)
  11. O’keefe BJ, Hillmyer MA, Tolman WB, J. Chem. Soc., Dalton Trans., 2215 (2001)
  12. Dechy-Cabaret O, Martin-Vaca B, Bourissou D, Chem. Rev., 104(12), 6147 (2004)
  13. Ovitt TM, Coates GW, J. Am. Chem. Soc., 124(7), 1316 (2002)
  14. Hormnirun P, Marshall EL, Gibson VC, White AJP, Williams DJ, J. Am. Chem. Soc., 126(9), 2688 (2004)
  15. Chen CT, Huang CA, Huang BH, Macromolecules, 37(21), 7968 (2004)
  16. Kowalski A, Duda A, Penczek S, Macromolecules, 31(7), 2114 (1998)
  17. Montaudo G, Montaudo MS, Puglisi C, Samperi F, Spassky N, Leborgne A, Wisniewski M, Macromolecules, 29(20), 6461 (1996)
  18. Dove AP, Li H, Pratt RC, Lohmeijer BGG, Culkin DA, Waymouth RH, Hendrick JL, Chem. Commun., 2881 (2006)
  19. Cheng M, Attygalle AB, Lobkovsky EB, Coates GW, J. Am. Chem. Soc., 121(49), 11583 (1999)
  20. Dove AP, Gibson VC, Marshall EL, Rzepa HS, White AJP, Williams DJ, J. Am. Chem. Soc., 128(30), 9834 (2006)
  21. Dove AD, Gibson VC, Marchall EL, Rzepa HS, White AJP, Willams DJ, Chem. Commun., 283 (2001)
  22. Kim Y, Jnaneshwara GK, Verkade JG, Inorg. Chem., 42(5), 1437 (2003)
  23. Mun S, Lee J, Kim SH, Hong Y, Ko Y, Shim YK, Lim JH, Hong CS, Do Y, Kim Y, J. Organomet. Chem., 692, 3519 (2007)
  24. Takashima Y, Nakayama Y, Watanabe K, Itono T, Ueyama N, Nakamura A, Yasuda H, Harada A, Okuda J, Macromolecules, 35(20), 7538 (2002)
  25. Richardson JT, Principles of catalyst development, Plenum Press, New York and London, 1989, pp 108-117
  26. Fraile JM, Garcia JI, Mayoral JA, Vispe E, J. Catal., 233(1), 90 (2005)
  27. Ejfler J, Kobylka M, Jerzykiewicz LB, Sobota P, J. Mol. Catal. A-Chem., 257(1-2), 105 (2006)
  28. Choi KY, Chung JS, Woo BG, Hong MH, J. Appl. Polym. Sci., 88(8), 2132 (2003)