Ring-opening polymerization behavior of L-lactide catalyzed by aluminum alkyl catalysts

Ji Yun Yoo; Youngjo Kim; Young Soo Ko

Journal of Industrial and Engineering Chemistry, Vol.19, No.4, 1137-1143, July, 2013

DOI10.1016/j.jiec.2012.12.010 Export Citation

Ring-opening polymerization behavior of L-lactide catalyzed by aluminum alkyl catalysts

Ji Yun Yoo, Youngjo Kim¹, and Young Soo Ko^†

Department of Chemical Engineering, Kongju National University, Budaedong 275, Cheonan, Chungnam 314-701, Republic of Korea
¹Department of Chemistry, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheongju, Chungbuk 361-763, Republic of Korea

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The L-lactide polymerization using trimethylaluminum (TMA), triethylaluminum (TEAL), trioctylaluminum (TOA), triisobutylaluminum (TIBA), and aluminum isopropoxide (Al(O-i-Pr)3) were studied to produce a PLA. The conversion, turnover frequency (TOF), and molecular weight of TIBA were higher than those of Al(O-i-Pr)3 with the polymerization time of 5 min. In the case of 15 min, the conversion of aluminum alkyls was lower than that of Al(O-i-Pr)3, but the molecular weight of PLA produced by aluminum alkyl was relatively high in comparison with the catalytic activity of Al(O-i-Pr)3. TMA, TEAL, and TIBA seemed to have lower propagation rates and much lower termination rates than Al(O-i-Pr)3.

Keywords:Biodegradable polymer;Poly(lactide);Aluminum alkyls;Ring-opening polymerization

[References]

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Purnama P, Jung Y, Hong CH, Han DS, Kim SH, Macromol. Res., 20(5), 515 (2012)
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Kim NY, Yun YS, Lee JY, Choochottiros C, Pyo H, Chin IJ, Jin HJ, Macromol. Res., 19(9), 943 (2011)
Noh YH, Ko YS, Polym.(Korea), 36(1), 53 (2012)
Kohn FE, Ommen JGV, Feijen J, European Polymer Journal., 19, 1081 (1983)
Khanna A, Sudha YS, Pillai S, Rath SS, Journal of Molecular Modeling., 14, 367 (2008)
Jamshidi K, Hyon SH, Ikada Y, Polymer., 29, 2229 (1988)
Furukawa T, Sato H, Murakami R, Zhang JM, Duan YX, Noda I, Ochiai S, Ozaki Y, Macromolecules, 38(15), 6445 (2005)

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[3] Coulembier O, Degee P, Hedrick JL, Dubois P, Progress in Polymer Science., 31, 723 (2006)

[4] Tokiwa Y, Calabia BP, Journal of Polymers and the Environment., 15, 259 (2007)

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[13] Aubrecht KB, Hillmyer MA, Tolman WB, Macromolecules, 35(3), 644 (2002)

[14] Purnama P, Jung Y, Hong CH, Han DS, Kim SH, Macromol. Res., 20(5), 515 (2012)

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