POROUS POLYMERIC FUNCTIONAL MATERIALS

POROUS POLYMERIC FUNCTIONAL MATERIALS

Bibliographic Details
Main Author: Gong, Xuehui
Language:English
Published: Case Western Reserve University School of Graduate Studies / OhioLINK 2020
Subjects:
Chemical Engineering
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-case15952561758345862021-08-03T07:15:53Z POROUS POLYMERIC FUNCTIONAL MATERIALS Gong, Xuehui 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. 2020-09-07 English text Case Western Reserve University School of Graduate Studies / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586 http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Chemical Engineering
spellingShingle Chemical Engineering
Gong, Xuehui
POROUS POLYMERIC FUNCTIONAL MATERIALS
author Gong, Xuehui
author_facet Gong, Xuehui
author_sort Gong, Xuehui
title POROUS POLYMERIC FUNCTIONAL MATERIALS
title_short POROUS POLYMERIC FUNCTIONAL MATERIALS
title_full POROUS POLYMERIC FUNCTIONAL MATERIALS
title_fullStr POROUS POLYMERIC FUNCTIONAL MATERIALS
title_full_unstemmed POROUS POLYMERIC FUNCTIONAL MATERIALS
title_sort porous polymeric functional materials
publisher Case Western Reserve University School of Graduate Studies / OhioLINK
publishDate 2020
url http://rave.ohiolink.edu/etdc/view?acc_num=case1595256175834586
work_keys_str_mv AT gongxuehui porouspolymericfunctionalmaterials
_version_ 1719457391343304704

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