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INFLUENCE OF TRIFLUOROMETHYL SUBSTITUENTS ON STRUCTURAL AND THERMAL STABILITY OF POLYIMIDE AEROGEL MATRIX

Vivod, Stephanie L
http://orcid.org/0000-0002-8927-7959
http://rave.ohiolink.edu/etdc/view?acc_num=akron155855118490992

Abstract Details

2019, Doctor of Philosophy, University of Akron, Polymer Science.
Within this thesis, a statistical design of experiments was employed to synthesize and analyze novel polyimide aerogels with enhanced, specific properties for aeronautic, aerospace, and commercial applications. The main objective of this research was to create a novel material combining chemistries that will result in improvement to physical and optical properties of polyimide aerogels. This study varied backbone chemistry of polyimide aerogels to tailor properties such as pore volume, pore size distribution, shrinkage, free volume, thermal stability, and optical transparency. Polymer aerogels exhibit a much higher structural integrity over silica-based counterparts; and polyimides offer a much higher temperature range than many polymers. However, the challenge with most conventional polyimides is the coloration from pale yellow to deep brown. Issues such as opacity, can be addressed by the incorporation of fluorocarbon monomers and bulky substituents into the polyimide backbone prior to gelation. In addition, characteristics such as shrinkage and onset of decomposition temperatures can be enhanced to more desirable ranges. Multiple routes were examined to study the effects of combining various diamines, dianhydrides, and multifunctional cross-linkers with the objective of producing high performance polyimide aerogels. Herein we examine the effect of fluorocarbon pendant groups on the backbone of the polymer matrix in regard to optical and physical properties
Coleen Pugh, PhD (Advisor)
Mary Ann Meador, PhD (Committee Member)
Kevin Cavicchi, PhD (Committee Member)
Sadhan Jana, PhD (Committee Member)
Yu Zhu, PhD (Committee Member)
164 p.
Aerospace Materials; Chemistry; Nanotechnology; Polymer Chemistry; Polymers
Polyimide, aerogel, fluorinated polymer, aerospace

Recommended Citations

Citations

  • Vivod, S. L. (2019). INFLUENCE OF TRIFLUOROMETHYL SUBSTITUENTS ON STRUCTURAL AND THERMAL STABILITY OF POLYIMIDE AEROGEL MATRIX [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron155855118490992

    APA Style (7th edition)

  • Vivod, Stephanie. INFLUENCE OF TRIFLUOROMETHYL SUBSTITUENTS ON STRUCTURAL AND THERMAL STABILITY OF POLYIMIDE AEROGEL MATRIX . 2019. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron155855118490992.

    MLA Style (8th edition)

  • Vivod, Stephanie. "INFLUENCE OF TRIFLUOROMETHYL SUBSTITUENTS ON STRUCTURAL AND THERMAL STABILITY OF POLYIMIDE AEROGEL MATRIX ." Doctoral dissertation, University of Akron, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron155855118490992

    Chicago Manual of Style (17th edition)

akron155855118490992
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© 2019, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.
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