Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


PhD Dissertation-Xuehui Gong.pdf (5.29 MB)

ETD Abstract Container

Abstract Header

POROUS POLYMERIC FUNCTIONAL MATERIALS

Gong, Xuehui
http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586

Abstract Details

2020, Doctor of Philosophy, Case Western Reserve University, Chemical Engineering.
Porous polymer materials with well-designed interconnected structures have a variety of important technological applications. Although many fabrication techniques for porous polymeric material have been reported, here, we introduce a unique porous hollow structure design via a solvent-free approach, and highlight the advantage of combining natural materials with polymers in functional porous structure fabrication. High internal phase emulsions (HIPEs)-templating method was explored as an environmental-friendly alternative for conventional organic solvent-based electrospinning processes to fabricate porous hollow fibers/beads. Extruding HIPEs into a heated aqueous curing bath containing an initiator (NaPS) and an electrolyte (NaCl) at various concentrations generate controllable porous hollow structure. In vitro drug release study using these hollow fibers show a controlled release profile that reveals the hollow fiber’s potential application in slow-release drug delivery. The presence of pores in the walls of the fibers also enable size-selective loading and separation of microspheres. In order to achieve eco-friendly porous polymer systems, porous hydrogels prepared by polymerizing the bio-emulsifier soy-protein-isolate (SPI) stabilized HIPEs is introduced for the first time. The performance of the SPI-polyHIPE composites in heavy metal ion capture are explored. The functionality of polysaccharide-based plant resource, psyllium, for use in composites is also developed by fabricating a low-density three-dimensional conductive filler skeleton consisting of psyllium and conductive carbon nanostructure via freeze-drying. After infiltration of polydimethylsilane (PDMS), a composite with excellent electrical conductivity and piezoresistive properties which respond to compressive forces can be obtained. The new composites demonstrate potential applications in pressure switches for circuit control and human motion detection. This technique opens a new way to fabricate compressive and porous conductive structure for developing composite strain sensors.
Donald Feke (Advisor)
Ica Manas-Zloczower (Committee Member)
Harihara Baskaran (Committee Member)
Julie Renner (Committee Member)
200 p.
Chemical Engineering

Recommended Citations

Citations

  • Gong, X. (2020). POROUS POLYMERIC FUNCTIONAL MATERIALS [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586

    APA Style (7th edition)

  • Gong, Xuehui. POROUS POLYMERIC FUNCTIONAL MATERIALS. 2020. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586.

    MLA Style (8th edition)

  • Gong, Xuehui. " POROUS POLYMERIC FUNCTIONAL MATERIALS." Doctoral dissertation, Case Western Reserve University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586

    Chicago Manual of Style (17th edition)

case1595256175834586
309
© 2020, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.