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Melt Polymerizations of Lactide Using Biocompatible Materials

Beilke, Tamara Lee
http://rave.ohiolink.edu/etdc/view?acc_num=osu1276200046

Abstract Details

2010, Master of Science, Ohio State University, Chemistry.
In this study, L-lactide was polymerized using various simple metal oxides and carbonates, as well as several over-the-counter health supplements to compare their activities towards ROP of lactide against that of the popularly used tin octanoate. The resulting polymer obtained from each catalyst was examined by means of mass spectrometry and gel permeation chromatography to determine its molecular weight and polydispersity index (PDI). Proton NMR and homonuclear decoupling NMR was also used to determine the microstructure of the resultant polymer, as well as to confirm the end groups. From the studies, it was found that CaO and the Goldline® Pink Bismuth tablets are able to convert the lactide to polylactide in high conversions (>90%) in 65 hours, which was similar to the tin octanoate. The PDI values obtained for these two catalysts were extremely narrow, 1.70 and 1.27 respectively, indicating a nicely controlled polymerization despite long reaction times. The molecular weights were comparable to tin octanoate, as determined by GPC and MALDI.
Malcolm Chisholm (Advisor)
James Cowan (Committee Member)
Chemistry
polylactide; melt polymerizations

Recommended Citations

Citations

  • Beilke, T. L. (2010). Melt Polymerizations of Lactide Using Biocompatible Materials [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276200046

    APA Style (7th edition)

  • Beilke, Tamara. Melt Polymerizations of Lactide Using Biocompatible Materials. 2010. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1276200046.

    MLA Style (8th edition)

  • Beilke, Tamara. "Melt Polymerizations of Lactide Using Biocompatible Materials." Master's thesis, Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276200046

    Chicago Manual of Style (17th edition)

osu1276200046
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© 2010, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.