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Conference Paper: Relaxation processes in disaccharide sugar glasses

TitleRelaxation processes in disaccharide sugar glasses
Authors
KeywordsDisaccharide
Relaxation
Sugar
Bioprotection
Glass
Issue Date2013
Citation
AIP Conference Proceedings, 2013, v. 1518, p. 38-46 How to Cite?
AbstractWe represented relaxation processes of disaccharide sugars (anhydrous trehalose and maltose) in supercooled and glassy states by using several spectroscopy techniques which include a broadband dielectric loss spectroscopy, photon correlation spectroscopy and X-ray diffraction (Retvield analysis) methods which are powerful tools to measure the dynamics in glass forming materials. In a dielectric loss spectroscopy study, we found that anhydrous trehalose and maltose glasses have an extra relaxation process besides α-, JG β-and γ-relaxations which could be related to a unique property of glycoside bond in disaccharides. In photon correlation spectroscopy study, we found an interesting compressed exponential relaxation at temperatures above 140°C. The q-1 dependence of its relaxation time corresponds to an ultraslow ballistic motion due to the local structure rearrangements. In the same temperature range, we found the glycosidic bond structure changes in trehalose molecule from the Raman and the Retvield X-ray diffraction measurements indicating that the observed compressed exponential relaxation in supercooled liquid trehalose could be resulted in the glycosidic bond structure change. Therefore, the overall results from this study might support the fact that the superior bioprotection ability of disaccharide sugar glasses might originate from this unique relaxation process of glycosidic bond. © 2013 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/273650
ISSN
2023 SCImago Journal Rankings: 0.152
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHwang, Yoon Hwae-
dc.contributor.authorKwon, Hyun Joung-
dc.contributor.authorSeo, Jeong Ah-
dc.contributor.authorShin, Dong Myeong-
dc.contributor.authorHa, Ji Hye-
dc.contributor.authorKim, Hyung Kook-
dc.date.accessioned2019-08-12T09:56:16Z-
dc.date.available2019-08-12T09:56:16Z-
dc.date.issued2013-
dc.identifier.citationAIP Conference Proceedings, 2013, v. 1518, p. 38-46-
dc.identifier.issn0094-243X-
dc.identifier.urihttp://hdl.handle.net/10722/273650-
dc.description.abstractWe represented relaxation processes of disaccharide sugars (anhydrous trehalose and maltose) in supercooled and glassy states by using several spectroscopy techniques which include a broadband dielectric loss spectroscopy, photon correlation spectroscopy and X-ray diffraction (Retvield analysis) methods which are powerful tools to measure the dynamics in glass forming materials. In a dielectric loss spectroscopy study, we found that anhydrous trehalose and maltose glasses have an extra relaxation process besides α-, JG β-and γ-relaxations which could be related to a unique property of glycoside bond in disaccharides. In photon correlation spectroscopy study, we found an interesting compressed exponential relaxation at temperatures above 140°C. The q-1 dependence of its relaxation time corresponds to an ultraslow ballistic motion due to the local structure rearrangements. In the same temperature range, we found the glycosidic bond structure changes in trehalose molecule from the Raman and the Retvield X-ray diffraction measurements indicating that the observed compressed exponential relaxation in supercooled liquid trehalose could be resulted in the glycosidic bond structure change. Therefore, the overall results from this study might support the fact that the superior bioprotection ability of disaccharide sugar glasses might originate from this unique relaxation process of glycosidic bond. © 2013 American Institute of Physics.-
dc.languageeng-
dc.relation.ispartofAIP Conference Proceedings-
dc.subjectDisaccharide-
dc.subjectRelaxation-
dc.subjectSugar-
dc.subjectBioprotection-
dc.subjectGlass-
dc.titleRelaxation processes in disaccharide sugar glasses-
dc.typeConference_Paper-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1063/1.4794549-
dc.identifier.scopuseid_2-s2.0-84874747822-
dc.identifier.volume1518-
dc.identifier.spage38-
dc.identifier.epage46-
dc.identifier.eissn1551-7616-
dc.identifier.isiWOS:000317036300004-
dc.identifier.issnl0094-243X-

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