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Dissertation_PrasantVijayaraghavan.pdf (47.77 MB)

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Investigating the Effect of Thermoelectric Processing on Smart Ionomer Composites

Vijayaraghavan, Prasant
http://rave.ohiolink.edu/etdc/view?acc_num=osu1534689821549276

Abstract Details

2018, Doctor of Philosophy, Ohio State University, Mechanical Engineering.
The scientific goal of this thesis is to investigate the effect of thermal and electrostatic field on thermoplastics ionomers and apply the resulting knowledge in advanced manufacturing of multi-functional composites. Ionomers are a class of polymers which contain a small fraction of charged groups in the polymer backbone. These ionic groups aggregate (termed ionic aggregates) to form temporary cross-links that break apart over the ionic dissociation temperature and reaggregate on cooling, influencing the mechanical properties of these polymers. The objective of this thesis is to develop a fundamental understanding of the effect of temperature and electrostatic fields (thermo-electric processing) on the morphology and properties of ionomers and their composites. Experimental studies focus on ionomers as the polymer phase and piezoelectric, mechanoluminescent and conductive nanoparticles as functional additives in ionomer composites. This research has lead to the following original contributions: (1) A system of characterization techniques to study the influence of thermo-electric fields on ionic aggregates. (2) A technique for the simultaneous functionalization and ionic aggregate control in smart material-ionomer composites. (3) Development of multifunctional ionomer composites fabrication methods. (4) Demonstration to harvest controlled arcing for rapid exothermic reactions in electrically conductive ionomer composites. The broader application of this thesis is the additive manufacture of smart structural components using thermo-electric fields. It is envisioned that application of an electric field across the extrusion head during thermoplastic manufacture will enable simultaneous control of size and distribution of ionic aggregates in the ionomer and functionalize the additives resulting in smart material structures with high molecular precision and interfacial adhesion.
Vishnu-Baba Sundaresan (Advisor)
Jose Castro (Committee Member)
Hanna Cho (Committee Member)
Lisa Hall (Committee Member)
193 p.
Mechanical Engineering
Ionomers; Structural Composites; Smart Materials

Recommended Citations

Citations

  • Vijayaraghavan, P. (2018). Investigating the Effect of Thermoelectric Processing on Smart Ionomer Composites [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534689821549276

    APA Style (7th edition)

  • Vijayaraghavan, Prasant. Investigating the Effect of Thermoelectric Processing on Smart Ionomer Composites. 2018. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1534689821549276.

    MLA Style (8th edition)

  • Vijayaraghavan, Prasant. "Investigating the Effect of Thermoelectric Processing on Smart Ionomer Composites." Doctoral dissertation, Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1534689821549276

    Chicago Manual of Style (17th edition)

osu1534689821549276
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This open access ETD is published by The Ohio State University and OhioLINK.