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Yan Huang Dissertation.pdf (2.71 MB)

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Micro- and Nanogel Formation through the Ionic Crosslinking of Polyelectrolytes

Huang, Yan
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1417781855

Abstract Details

2014, Doctor of Philosophy, University of Toledo, Chemical Engineering.
Colloidal polyelectrolyte/counterion micro- and nanogels form automatically via ionic crosslinking, upon mixing multivalent counterions solution with dilute polyelectrolyte solution. Despite the broad application and abundant research of these colloidal materials, most of the studies have been based on trial and error without mechanistic understanding of their formation and coagulation process, and, the relation between molecular and colloidal interactions to their final properties (e.g., size distributions and stabilities). The lack of mechanistic understanding leads to poor control, reproducibility and explanation of experimental results. To address this, isothermal titration calorimetry (ITC) was first used to relate the binding thermogram to the formation and coagulation of polyelectrolyte/counterion colloidal particles. Chitosan/TPP micro- and nanogel system was then studied by ITC, dynamic light scattering (DLS), transmission electron microscopy, zeta-potential and stopped-flow light scattering under various conditions (i.e., pH and ionic strength) to probe the mechanism of the micro- and nanogel formation and coagulation, and, to relate the molecular/colloidal interactions to their final properties(e.g., size distributions and stabilities).
Yakov Lapitsky (Advisor)
Constance Schall (Committee Member)
Sasidhar Varanasi (Committee Member)
Saleh Jabarin (Committee Member)
Eda Yildirim-Ayan (Committee Member)
245 p.
Chemical Engineering; Polymers
chitosan; TPP; colloid; mechanism; salt; stability; kinetics; polyelectrolyte; nanoparticle; microgel; polydispersity; coagulation;

Recommended Citations

Citations

  • Huang, Y. (2014). Micro- and Nanogel Formation through the Ionic Crosslinking of Polyelectrolytes [Doctoral dissertation, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1417781855

    APA Style (7th edition)

  • Huang, Yan. Micro- and Nanogel Formation through the Ionic Crosslinking of Polyelectrolytes. 2014. University of Toledo, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1417781855.

    MLA Style (8th edition)

  • Huang, Yan. "Micro- and Nanogel Formation through the Ionic Crosslinking of Polyelectrolytes." Doctoral dissertation, University of Toledo, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1417781855

    Chicago Manual of Style (17th edition)

toledo1417781855
1,254
© 2014, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.