Influence of emulsion stability on poly(HIPE) morphology and mechanical properties

Influence of emulsion stability on poly(HIPE) morphology and mechanical properties

Bibliographic Details
Main Author: Rohm, Kristen
Language:English
Published: Case Western Reserve University School of Graduate Studies / OhioLINK 2019
Subjects:
Chemical Engineering
polyHIPE
crosslink density
foams
interfacial tension
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=case1547463711081874
id ndltd-OhioLink-oai-etd.ohiolink.edu-case1547463711081874
record_format oai_dc
spelling ndltd-OhioLink-oai-etd.ohiolink.edu-case15474637110818742021-08-03T07:09:26Z Influence of emulsion stability on poly(HIPE) morphology and mechanical properties Rohm, Kristen Chemical Engineering polyHIPE crosslink density foams interfacial tension Porous polymer foams were prepared by emulsion templating. The relationship between emulsion behavior before polymerization and final foam morphology and mechanical properties was investigated. Poly(High Internal Phase Emulsion) foams were synthesized with the same strut material and relative density but different morphology and mechanical properties, achieved by varying the surfactant system and concentration. The range of morphologies spanned from foams with hierarchical porosity and millimeter-scale voids to highly interconnected, micron-scale voids resembling Kelvin cell structures. The difference in mechanical properties was evaluated as a function of morphology and polymer crosslinking density. According to the Gibson-Ashby relative modulus – density relationship, morphology was not the sole indicator of mechanical properties. Variance in crosslinking density was inferred from foam swelling behavior, indicating that the interfacial film in the emulsion stage influences the polymerization reaction and the degree of crosslinking. A mixed surfactant system of cationic and nonionic surfactant showed the best ability to support small droplets and limit coalescence. However, the magnitude of the interfacial tension alone is not an indicator of the final foam properties. 2019-02-01 English text Case Western Reserve University School of Graduate Studies / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=case1547463711081874 http://rave.ohiolink.edu/etdc/view?acc_num=case1547463711081874 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
polyHIPE
crosslink density
foams
interfacial tension
spellingShingle Chemical Engineering
polyHIPE
crosslink density
foams
interfacial tension
Rohm, Kristen
Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
author Rohm, Kristen
author_facet Rohm, Kristen
author_sort Rohm, Kristen
title Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
title_short Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
title_full Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
title_fullStr Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
title_full_unstemmed Influence of emulsion stability on poly(HIPE) morphology and mechanical properties
title_sort influence of emulsion stability on poly(hipe) morphology and mechanical properties
publisher Case Western Reserve University School of Graduate Studies / OhioLINK
publishDate 2019
url http://rave.ohiolink.edu/etdc/view?acc_num=case1547463711081874
work_keys_str_mv AT rohmkristen influenceofemulsionstabilityonpolyhipemorphologyandmechanicalproperties
_version_ 1719454768303177728

Similar Items