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dc.contributor.author
Cuggino, Julio César
dc.contributor.author
Calderon, Marcelo
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Alvarez Igarzabal, Cecilia Ines
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Strumia, Miriam Cristina
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Silva, Karolaine
dc.contributor.author
Penott Chang, Evis
dc.contributor.author
Müller, Alejandro
dc.date.available
2017-02-13T21:13:46Z
dc.date.issued
2011-05
dc.identifier.citation
Cuggino, Julio César; Calderon, Marcelo; Alvarez Igarzabal, Cecilia Ines; Strumia, Miriam Cristina; Silva, Karolaine; et al.; New dendronized polymers from acrylate Behera amine and their ability to produce visco-elastic structured fluids when mixed with CTAT worm-like micelles; Elsevier; Journal Of Colloid And Interface Science; 357; 1; 5-2011; 147-156
dc.identifier.issn
0021-9797
dc.identifier.uri
http://hdl.handle.net/11336/12936
dc.description.abstract
Two new water soluble dendronized polymers (PLn) from acrylate Behera amine monomer of different molecular weights were successfully synthesized. The polymers were characterized by FTIR, NMR, GPC and DLS. Both GPC and DLS results indicated that these PLn have a remarkable tendency to form aggregates in solution that lead to apparent molecular weights that are much higher than their theoretical values, as well as large diameters in solution. However, the addition of any PLn to water did not cause any increase in viscosity up to concentrations of 1000 ppm. The possible interactions of PLn with the cationic surfactant CTAT were explored by solution rheometry. A synergistic viscosity enhancement was found by adding small amounts of dendronized PLn polymers to a CTAT solution composed of entangled wormlike micelles. The highest association tendency with CTAT was found for PL1 at the maximum polymer concentration before phase separation (i.e., 100 ppm). The solution viscosity at low shear rates could be increased by an order of magnitude upon addition of 100 ppm of PL1 to a 20 mM CTAT solution. For this mixture, the fluid obtained was highly structured and exhibited only shear thinning behavior from the smallest shear rates employed. These PL1/CTAT mixtures exhibited an improved elastic character (as determined by dynamic rheometry) that translated in a much longer value of the cross-over relaxation time and a pronounced thixotropic behavior which are indicative of a strong intermolecular interaction. In the case of the polymer with a higher theoretical molecular weight, PL2, its association with CTAT leads to an extraordinary doubling of solution viscosity with just 0.25 ppm polymer addition to a 20 mM CTAT solution. However, such synergistic viscosity enhancement saturated at rather low concentrations (25 ppm) indicating an apparent lower solubility as compared to PL1, a fact that may be related to its higher molecular weight.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Dendrons
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Dendronized Polymers
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Ctat
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Worm-Like Micelles
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Structured Fluids
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
New dendronized polymers from acrylate Behera amine and their ability to produce visco-elastic structured fluids when mixed with CTAT worm-like micelles
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-02-09T13:51:52Z
dc.journal.volume
357
dc.journal.number
1
dc.journal.pagination
147-156
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Chicago
dc.description.fil
Fil: Cuggino, Julio César. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina. Universidad Nacional de Cordoba. Facultad de Ciencias Quimicas; Argentina
dc.description.fil
Fil: Calderon, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Freie Universität Berlin; Alemania
dc.description.fil
Fil: Alvarez Igarzabal, Cecilia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina. Universidad Nacional de Cordoba. Facultad de Ciencias Quimicas; Argentina
dc.description.fil
Fil: Strumia, Miriam Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto Multidisciplinario de Biología Vegetal (p); Argentina. Universidad Nacional de Cordoba. Facultad de Ciencias Quimicas; Argentina
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Fil: Silva, Karolaine. Universidad Simón Bolívar; Venezuela
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Fil: Penott Chang, Evis. Universidad Simón Bolívar; Venezuela
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Fil: Müller, Alejandro. Universidad Simón Bolívar; Venezuela
dc.journal.title
Journal Of Colloid And Interface Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jcis.2011.01.075
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0021979711001068
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