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Full text release has been delayed at the author's request until May 12, 2024

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An Affordable and Effective Macroamine Ligand for Atom Transfer Radical Polymerization

Wang, Xianjun
http://rave.ohiolink.edu/etdc/view?acc_num=akron1555692867285719

Abstract Details

2019, Master of Science, University of Akron, Polymer Science.
The transition metal catalyst complex plays a significant role in the reversible activation/deactivation equilibrium between active and dormant species in atom transfer radical polymerization (ATRP). The ligand modification provides synthetic opportunities to tune the catalyst properties in order to overcome limitations in monomer selection and achieve better control of the polymerization. Branched polyethyleneimine (b-PEI), which is widely used as a transfection reagent in the field of biology, is a promising candidate as an ATRP ligand. According to Hammett parameters, the introduction of methyl groups to all primary and secondary amine-endings should further increase the catalyst activity and avoid hydrogen bonding aggregation. The fully methylated branched polyethyleneimine (Me-b-PEI) was tested by polymerizations of well-established vinyl monomers such as methyl methacrylate, methyl acrylate, and t-butyl acrylate to establish the polymerization conditions. This new ligand was also employed to polymerize N,N- dimethyl acrylamide, a more challenging monomer, to expand the scope of ATRP monomers. In addition, a galactose-based hyperbranched polymer was successfully synthesized because the elimination side reaction, which occurs with traditional ATRP ligands, was largely suppressed due to the bulkiness of the Cu/Me-b-PEI complex.
Coleen Pugh (Advisor)
Li Jia (Committee Member)
84 p.
Polymer Chemistry

Recommended Citations

Citations

  • Wang, X. (2019). An Affordable and Effective Macroamine Ligand for Atom Transfer Radical Polymerization [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555692867285719

    APA Style (7th edition)

  • Wang, Xianjun. An Affordable and Effective Macroamine Ligand for Atom Transfer Radical Polymerization. 2019. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1555692867285719.

    MLA Style (8th edition)

  • Wang, Xianjun. "An Affordable and Effective Macroamine Ligand for Atom Transfer Radical Polymerization." Master's thesis, University of Akron, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555692867285719

    Chicago Manual of Style (17th edition)

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© 2019, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.