Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering

Relaxation mechanisms of shake gels (particle-polymer systems) are not yet fully understood, mainly because of the lack of effective structural parameters to describe relaxation processes. Small-angle X-ray scattering and dynamic light scattering methods were employed to track the relaxation process...

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Autores principales:	Qiang Tian, Jiayi Sun, Mark Julian Henderson, Xuegang Huang, Na Li, Jérémie Courtois, László Almásy
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Shake gel Relaxation SAXS DLS Polymers and polymer manufacture TP1080-1185
Acceso en línea:	https://doaj.org/article/7069352a009248ef9cc4b5e157cbcba3
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spelling	oai:doaj.org-article:7069352a009248ef9cc4b5e157cbcba32021-11-14T04:27:59ZQuantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering0142-941810.1016/j.polymertesting.2021.107391https://doaj.org/article/7069352a009248ef9cc4b5e157cbcba32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0142941821003366https://doaj.org/toc/0142-9418Relaxation mechanisms of shake gels (particle-polymer systems) are not yet fully understood, mainly because of the lack of effective structural parameters to describe relaxation processes. Small-angle X-ray scattering and dynamic light scattering methods were employed to track the relaxation processes in a water-based shake gel system, composed of 20 wt % of 24.8 nm silica nanoparticles and 0.3 wt % of poly(ethylene oxide) (PEO1000k). The gelation of the studied silica-PEO dispersion was readily induced by quick manual shaking (∼3 cycles/s). Temporal structural evolution of the shake gel after manual agitation was inferred from the development of the modeled parameters. The quantitative structural parameters extracted from the scattering data, i.e. nearest neighbor distance of silica nanoparticles and floc size of gel network, showed that the shake gel network quickly relaxes during the first 10–20 min following the shake-induced gelation, and then slowly reaches a quiescent structure after 1 h.Qiang TianJiayi SunMark Julian HendersonXuegang HuangNa LiJérémie CourtoisLászló AlmásyElsevierarticleShake gelRelaxationSAXSDLSPolymers and polymer manufactureTP1080-1185ENPolymer Testing, Vol 104, Iss , Pp 107391- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Shake gel Relaxation SAXS DLS Polymers and polymer manufacture TP1080-1185
spellingShingle	Shake gel Relaxation SAXS DLS Polymers and polymer manufacture TP1080-1185 Qiang Tian Jiayi Sun Mark Julian Henderson Xuegang Huang Na Li Jérémie Courtois László Almásy Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
description	Relaxation mechanisms of shake gels (particle-polymer systems) are not yet fully understood, mainly because of the lack of effective structural parameters to describe relaxation processes. Small-angle X-ray scattering and dynamic light scattering methods were employed to track the relaxation processes in a water-based shake gel system, composed of 20 wt % of 24.8 nm silica nanoparticles and 0.3 wt % of poly(ethylene oxide) (PEO1000k). The gelation of the studied silica-PEO dispersion was readily induced by quick manual shaking (∼3 cycles/s). Temporal structural evolution of the shake gel after manual agitation was inferred from the development of the modeled parameters. The quantitative structural parameters extracted from the scattering data, i.e. nearest neighbor distance of silica nanoparticles and floc size of gel network, showed that the shake gel network quickly relaxes during the first 10–20 min following the shake-induced gelation, and then slowly reaches a quiescent structure after 1 h.
format	article
author	Qiang Tian Jiayi Sun Mark Julian Henderson Xuegang Huang Na Li Jérémie Courtois László Almásy
author_facet	Qiang Tian Jiayi Sun Mark Julian Henderson Xuegang Huang Na Li Jérémie Courtois László Almásy
author_sort	Qiang Tian
title	Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
title_short	Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
title_full	Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
title_fullStr	Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
title_full_unstemmed	Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering
title_sort	quantitative analysis of the structural relaxation of silica-peo shake gel by x-ray and light scattering
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7069352a009248ef9cc4b5e157cbcba3
work_keys_str_mv	AT qiangtian quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT jiayisun quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT markjulianhenderson quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT xueganghuang quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT nali quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT jeremiecourtois quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering AT laszloalmasy quantitativeanalysisofthestructuralrelaxationofsilicapeoshakegelbyxrayandlightscattering
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Quantitative analysis of the structural relaxation of silica-PEO shake gel by X-ray and light scattering

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