Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations

Here, we study the structural relaxation kinetics in modified binary (i.e., ternary) mixtures with strong concentration fluctuation imposed by a polar picoline and an apolar triphenylethylene by adding a surfactant phenanthridine. The dielectric and enthalpy relaxation measurements are applied to mo...

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Autores principales:	Xiao Jin, Li-Min Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Glass transition Mixtures Calorimetric Dielectric Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/31ab7f3467944e7e991800069a11626a
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spelling	oai:doaj.org-article:31ab7f3467944e7e991800069a11626a2021-11-28T04:37:55ZRelaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations2590-159110.1016/j.nocx.2021.100072https://doaj.org/article/31ab7f3467944e7e991800069a11626a2021-09-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590159121000133https://doaj.org/toc/2590-1591Here, we study the structural relaxation kinetics in modified binary (i.e., ternary) mixtures with strong concentration fluctuation imposed by a polar picoline and an apolar triphenylethylene by adding a surfactant phenanthridine. The dielectric and enthalpy relaxation measurements are applied to monitor the dynamic properties aiming at distinguishing various effects of the concentration fluctuation. It is found that the strong concentration fluctuations are largely suppressed by adding the surfactant molecule. However, compared with the binary mixtures, a larger difference in the glass transition temperatures determined by the dielectric and enthalpy methods is observed in some of the ternary mixtures. Another unusual behavior in the ternary mixtures is that the enthalpy relaxation produces higher non-exponential factor β than the dielectric relaxation. The comparison of various parameters confirm that the reduced glass transition width is more suitable for characterizing the strength of concentration fluctuations in multi-component systems.Xiao JinLi-Min WangElsevierarticleGlass transitionMixturesCalorimetricDielectricMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENJournal of Non-Crystalline Solids: X, Vol 11, Iss , Pp 100072- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Glass transition Mixtures Calorimetric Dielectric Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Glass transition Mixtures Calorimetric Dielectric Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 Xiao Jin Li-Min Wang Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
description	Here, we study the structural relaxation kinetics in modified binary (i.e., ternary) mixtures with strong concentration fluctuation imposed by a polar picoline and an apolar triphenylethylene by adding a surfactant phenanthridine. The dielectric and enthalpy relaxation measurements are applied to monitor the dynamic properties aiming at distinguishing various effects of the concentration fluctuation. It is found that the strong concentration fluctuations are largely suppressed by adding the surfactant molecule. However, compared with the binary mixtures, a larger difference in the glass transition temperatures determined by the dielectric and enthalpy methods is observed in some of the ternary mixtures. Another unusual behavior in the ternary mixtures is that the enthalpy relaxation produces higher non-exponential factor β than the dielectric relaxation. The comparison of various parameters confirm that the reduced glass transition width is more suitable for characterizing the strength of concentration fluctuations in multi-component systems.
format	article
author	Xiao Jin Li-Min Wang
author_facet	Xiao Jin Li-Min Wang
author_sort	Xiao Jin
title	Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
title_short	Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
title_full	Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
title_fullStr	Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
title_full_unstemmed	Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
title_sort	relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/31ab7f3467944e7e991800069a11626a
work_keys_str_mv	AT xiaojin relaxationdynamicsinmulticomponentglassformerswithadjustableconcentrationfluctuations AT liminwang relaxationdynamicsinmulticomponentglassformerswithadjustableconcentrationfluctuations
_version_	1718408250778451968

Relaxation dynamics in multicomponent glass formers with adjustable concentration fluctuations

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