Please use this identifier to cite or link to this item:
https://doi.org/10.15480/882.2934
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Dogenski, Mirelle | - |
dc.contributor.author | Gurikov, Pavel | - |
dc.contributor.author | Baudron, Victor | - |
dc.contributor.author | Oliveira, J. Valdimir de | - |
dc.contributor.author | Smirnova, Irina | - |
dc.contributor.author | Ferreira, Sandra R. S. | - |
dc.date.accessioned | 2020-09-28T11:47:14Z | - |
dc.date.available | 2020-09-28T11:47:14Z | - |
dc.date.issued | 2020-09-19 | - |
dc.identifier | doi: 10.3390/gels6030032 | - |
dc.identifier.citation | Gels 6, Special Issue "Aerogels 2020" (3): 32 (2020) | de_DE |
dc.identifier.issn | 2310-2861 | de_DE |
dc.identifier.uri | http://hdl.handle.net/11420/7410 | - |
dc.description.abstract | In this work, the ability of several solvents to induce gel formation from amylomaize starch solubilized in dimethyl sulfoxide (DMSO) was investigated. The formed gels were subjected to solvent exchange using ethanol and dried with supercritical carbon dioxide (sc-CO<sub>2</sub>) to obtain the aerogels. The influence of starch concentration (3–15 wt%) and solvent content (20–80 wt%) on gel formation was also studied. It was demonstrated that the gelation of starch in binary mixtures of solvents can be rationalized by Hansen Solubility Parameters (HSP) revealing a crucial hole of hydrogen bonding for the gel’s strength, which is in agreement with rheological measurements. Only the addition of water or propylene glycol to starch/DMSO solutions resulted in strong gels at a minimum starch and solvent content of 7.5 wt% and 50 wt%, respectively. The resulting aerogels showed comparably high specific surface areas (78–144 m<sup>2</sup> g<sup>−1</sup>) and low envelope densities (0.097–0.203 g cm<sup>−3</sup>). The results of this work indicate that the HSP parameters could be used as a tool to guide the rational selection of water-free gelation in starch/DMSO systems. In addition, it opens up an attractive opportunity to perform starch gelation in those solvents that are miscible with sc-CO<sub>2</sub>, avoiding the time-consuming step of solvent exchange. | - |
dc.description.abstract | In this work, the ability of several solvents to induce gel formation from amylomaize starch solubilized in dimethyl sulfoxide (DMSO) was investigated. The formed gels were subjected to solvent exchange using ethanol and dried with supercritical carbon dioxide (sc-CO<sub>2</sub>) to obtain the aerogels. The influence of starch concentration (3–15 wt%) and solvent content (20–80 wt%) on gel formation was also studied. It was demonstrated that the gelation of starch in binary mixtures of solvents can be rationalized by Hansen Solubility Parameters (HSP) revealing a crucial hole of hydrogen bonding for the gel’s strength, which is in agreement with rheological measurements. Only the addition of water or propylene glycol to starch/DMSO solutions resulted in strong gels at a minimum starch and solvent content of 7.5 wt% and 50 wt%, respectively. The resulting aerogels showed comparably high specific surface areas (78–144 m<sup>2</sup> g<sup>−1</sup>) and low envelope densities (0.097–0.203 g cm<sup>−3</sup>). The results of this work indicate that the HSP parameters could be used as a tool to guide the rational selection of water-free gelation in starch/DMSO systems. In addition, it opens up an attractive opportunity to perform starch gelation in those solvents that are miscible with sc-CO<sub>2</sub>, avoiding the time-consuming step of solvent exchange. | en |
dc.language.iso | en | de_DE |
dc.publisher | MDPI | de_DE |
dc.relation.ispartof | Gels | de_DE |
dc.rights | CC BY 4.0 | de_DE |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | de_DE |
dc.subject | starch-based aerogels | de_DE |
dc.subject | dimethyl sulfoxide | de_DE |
dc.subject | solvent-induced galation | de_DE |
dc.subject | solubility parameters | de_DE |
dc.subject.ddc | 600: Technik | de_DE |
dc.title | Starch-Based Aerogels Obtained via Solvent-Induced Gelation | de_DE |
dc.type | Article | de_DE |
dc.date.updated | 2020-09-25T13:26:31Z | - |
dc.identifier.doi | 10.15480/882.2934 | - |
dc.type.dini | article | - |
dcterms.DCMIType | Text | - |
tuhh.identifier.urn | urn:nbn:de:gbv:830-882.0106768 | - |
tuhh.oai.show | true | de_DE |
tuhh.abstract.english | In this work, the ability of several solvents to induce gel formation from amylomaize starch solubilized in dimethyl sulfoxide (DMSO) was investigated. The formed gels were subjected to solvent exchange using ethanol and dried with supercritical carbon dioxide (sc-CO<sub>2</sub>) to obtain the aerogels. The influence of starch concentration (3–15 wt%) and solvent content (20–80 wt%) on gel formation was also studied. It was demonstrated that the gelation of starch in binary mixtures of solvents can be rationalized by Hansen Solubility Parameters (HSP) revealing a crucial hole of hydrogen bonding for the gel’s strength, which is in agreement with rheological measurements. Only the addition of water or propylene glycol to starch/DMSO solutions resulted in strong gels at a minimum starch and solvent content of 7.5 wt% and 50 wt%, respectively. The resulting aerogels showed comparably high specific surface areas (78–144 m<sup>2</sup> g<sup>−1</sup>) and low envelope densities (0.097–0.203 g cm<sup>−3</sup>). The results of this work indicate that the HSP parameters could be used as a tool to guide the rational selection of water-free gelation in starch/DMSO systems. In addition, it opens up an attractive opportunity to perform starch gelation in those solvents that are miscible with sc-CO<sub>2</sub>, avoiding the time-consuming step of solvent exchange. | de_DE |
tuhh.publisher.doi | doi: 10.3390/gels6030032 | - |
tuhh.publication.institute | Thermische Verfahrenstechnik V-8 | de_DE |
tuhh.publication.institute | Entwicklung und Modellierung neuartiger nanoporöser Materialien V-EXK2 | de_DE |
tuhh.identifier.doi | 10.15480/882.2934 | - |
tuhh.type.opus | (wissenschaftlicher) Artikel | - |
dc.type.driver | article | - |
dc.type.casrai | Journal Article | - |
tuhh.container.issue | 3 | de_DE |
tuhh.container.volume | 6 | de_DE |
dc.relation.project | Stofftransportprozesse bei der Herstellung von biopolymerbasierten Aerogelen: in situ Charakterisierung und Modellierung | de_DE |
dc.rights.nationallicense | false | de_DE |
dc.identifier.scopus | 2-s2.0-85092504114 | de_DE |
tuhh.container.articlenumber | 32 | de_DE |
local.status.inpress | false | de_DE |
datacite.resourceType | Journal Article | - |
datacite.resourceTypeGeneral | Text | - |
item.mappedtype | Article | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.creatorOrcid | Dogenski, Mirelle | - |
item.creatorOrcid | Gurikov, Pavel | - |
item.creatorOrcid | Baudron, Victor | - |
item.creatorOrcid | Oliveira, J. Valdimir de | - |
item.creatorOrcid | Smirnova, Irina | - |
item.creatorOrcid | Ferreira, Sandra R. S. | - |
item.creatorGND | Dogenski, Mirelle | - |
item.creatorGND | Gurikov, Pavel | - |
item.creatorGND | Baudron, Victor | - |
item.creatorGND | Oliveira, J. Valdimir de | - |
item.creatorGND | Smirnova, Irina | - |
item.creatorGND | Ferreira, Sandra R. S. | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
crisitem.project.funder | Deutsche Forschungsgemeinschaft (DFG) | - |
crisitem.project.funderid | 501100001659 | - |
crisitem.project.funderrorid | 018mejw64 | - |
crisitem.project.grantno | GU 1842/3-1 | - |
crisitem.author.dept | Entwicklung und Modellierung Neuartiger Nanoporöser Materialien V-EXK2 | - |
crisitem.author.dept | Thermische Verfahrenstechnik V-8 | - |
crisitem.author.dept | Thermische Verfahrenstechnik V-8 | - |
crisitem.author.orcid | 0000-0002-9003-1059 | - |
crisitem.author.orcid | 0000-0003-0598-243X | - |
crisitem.author.orcid | 0000-0003-4503-4039 | - |
crisitem.author.orcid | 0000-0003-3393-0995 | - |
crisitem.author.parentorg | Studiendekanat Verfahrenstechnik (V) | - |
crisitem.author.parentorg | Studiendekanat Verfahrenstechnik (V) | - |
crisitem.author.parentorg | Studiendekanat Verfahrenstechnik (V) | - |
Appears in Collections: | Publications with fulltext |
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