OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES

ABSTRACT The objective of this study is the rheological characterization of photocrosslinked alginate hydrogels synthesized from methacrylated alginate macromonomers. We first optimized the rheological acquisition parameters for this hydrogels, that is, we studied the influence of the geometries dia...

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Autores principales:	Solar,Camila, Palacio,Daniel, Sánchez,Susana, Urbano,Bruno F.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2019
Materias:	rheology alginate hydrogel macromonomer
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304542
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id	oai:scielo:S0717-97072019000304542
record_format	dspace
spelling	oai:scielo:S0717-970720190003045422019-11-06OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLESSolar,CamilaPalacio,DanielSánchez,SusanaUrbano,Bruno F. rheology alginate hydrogel macromonomer ABSTRACT The objective of this study is the rheological characterization of photocrosslinked alginate hydrogels synthesized from methacrylated alginate macromonomers. We first optimized the rheological acquisition parameters for this hydrogels, that is, we studied the influence of the geometries diameter, distance between plates (gap), and solvent trap in the rheological response. Our results show important variations of shear storage modulus, G', and yield strain with the three parameters measured. Secondly, with the optimized experimental parameters, rheological tests were performed on hydrogels synthesized under different conditions. Three parameters were studied; UV exposure time (polymerization time), macromonomer concentration and photoinitiator concentration. Our data indicate that the polymerization time and the macromonomer concentration have an important effect on the viscoelastic properties of the hydrogel, significantly modifying the shear storage modulus, G', and the yield strain while the photoinitiator concentration did not influence the viscoelastic properties.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304542en10.4067/S0717-97072019000304542
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	rheology alginate hydrogel macromonomer
spellingShingle	rheology alginate hydrogel macromonomer Solar,Camila Palacio,Daniel Sánchez,Susana Urbano,Bruno F. OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
description	ABSTRACT The objective of this study is the rheological characterization of photocrosslinked alginate hydrogels synthesized from methacrylated alginate macromonomers. We first optimized the rheological acquisition parameters for this hydrogels, that is, we studied the influence of the geometries diameter, distance between plates (gap), and solvent trap in the rheological response. Our results show important variations of shear storage modulus, G', and yield strain with the three parameters measured. Secondly, with the optimized experimental parameters, rheological tests were performed on hydrogels synthesized under different conditions. Three parameters were studied; UV exposure time (polymerization time), macromonomer concentration and photoinitiator concentration. Our data indicate that the polymerization time and the macromonomer concentration have an important effect on the viscoelastic properties of the hydrogel, significantly modifying the shear storage modulus, G', and the yield strain while the photoinitiator concentration did not influence the viscoelastic properties.
author	Solar,Camila Palacio,Daniel Sánchez,Susana Urbano,Bruno F.
author_facet	Solar,Camila Palacio,Daniel Sánchez,Susana Urbano,Bruno F.
author_sort	Solar,Camila
title	OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
title_short	OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
title_full	OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
title_fullStr	OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
title_full_unstemmed	OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES
title_sort	oscillatory strain sweeps of hydrogels from methacrylated alginate macromonomers: assessment of synthesis and acquisition variables
publisher	Sociedad Chilena de Química
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304542
work_keys_str_mv	AT solarcamila oscillatorystrainsweepsofhydrogelsfrommethacrylatedalginatemacromonomersassessmentofsynthesisandacquisitionvariables AT palaciodaniel oscillatorystrainsweepsofhydrogelsfrommethacrylatedalginatemacromonomersassessmentofsynthesisandacquisitionvariables AT sanchezsusana oscillatorystrainsweepsofhydrogelsfrommethacrylatedalginatemacromonomersassessmentofsynthesisandacquisitionvariables AT urbanobrunof oscillatorystrainsweepsofhydrogelsfrommethacrylatedalginatemacromonomersassessmentofsynthesisandacquisitionvariables
_version_	1714200940607700992

OSCILLATORY STRAIN SWEEPS OF HYDROGELS FROM METHACRYLATED ALGINATE MACROMONOMERS: ASSESSMENT OF SYNTHESIS AND ACQUISITION VARIABLES

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