Search Results - "Piérola, Inés F"

Poly(N-vinylimidazole) Gels as Insoluble Buffers that Neutralize Acid Solutions without Dissolving by Horta, Arturo, Piérola, Inés F

“…Typical buffers are solutions containing weak acids or bases. If these groups were anchored to insoluble gels, what would be their behavior? Simple…”
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Determination of the Parameters Controlling Swelling of Chemically Cross-Linked pH-Sensitive Poly(N-vinylimidazole) Hydrogels by Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F

“…The number of variables controlling the behavior of ionic gels is large and very often some of them are unknown. The aim of this work is to interpret…”
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Discrimination of the roles of crosslinking density and morphology in the swelling behavior of crosslinked polymers: Poly(N-vinylimidazole) hydrogels by Pacios, Isabel E, Piérola, Inés F

“…The degree of swelling (S) of crosslinked polymers depends on several variables whose individual contributions are difficult to be distinguished. The aim of…”
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The pH Inside a Swollen Polyelectrolyte Gel: Poly(N-Vinylimidazole) by Horta, Arturo, Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F

“…The pH inside a dissolved polyelectrolyte coil or a swollen ionic polymer network is not accessible to direct measurement. It is here calculated through a…”
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The pH Inside a Swollen Polyelectrolyte Gel: Poly(N-Vinylimidazole) by Horta, Arturo, Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F

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Kinetics of solvent responsiveness in poly(N,N-dimethylacrylamide) hydrogels of different morphology by Pastoriza, Alejandra, Pacios, Isabel E, Piérola, Inés F

“…Crosslinked poly(N,N‐dimethylacrylamide) hydrogel samples were synthesized with various total comonomer concentrations and crosslinker ratios in the reacting…”
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The pH Inside a pH-Sensitive Gel Swollen in Aqueous Salt Solutions: Poly(N-vinylimidazole) by Horta, Arturo, Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F

“…The pH inside a swollen polyelectrolyte network is calculated through a simple model, based on Donnan equilibrium and balance of mobile ions, extended to…”
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Dynamics of Linear Poly(methylphenylsiloxane) by Time-Resolved Fluorescence:  Slow vs Fast Relaxations and Low-Temperature Behavior in Chains of Different Lengths by Dias, Fernando B, Lima, João C, Horta, Arturo, Piérola, Inés F, Maçanita, Antonio L

“…Three linear poly(methylphenylsiloxane) chains (PMPSN) with different number of skeletal bonds (N = 82, 284, 1285) were studied by time-resolved fluorescence…”
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Fluorescence lifetime distributions of labeled amorphous polymers in bulk by SERRANO, Bema, BASELGA, Juan, PIEROLA, Inés F

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Anomalous Fluorescence of Linear Poly(methylphenylsiloxane) in Dilute Solution at Temperatures below −50 °C by Dias, Fernando B, Lima, João C, Maçanita, Antonio L, Clarson, Stephen J, Horta, Arturo, Piérola, Inés F

“…Fluorescence spectroscopy and 1H NMR were used to study linear poly(methylphenylsiloxane) (PMPS) in dilute solution (2 × 10-4 to 4 × 10-3 M) at temperatures…”
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Conformational Analysis of Methyl−Phenyl−Siloxane Chains by Freire, Juan J, Piérola, Inés F, Horta, Arturo

“…The conformational energy of chain fragments of poly(methylphenylsiloxane) is studied, considering contributions from bond stretching, bond angle bending, bond…”
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Correlation of swelling and crosslinking density with the composition of the reacting mixture employed in radical crosslinking copolymerization by Pacios, Isabel E., Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F.

“…This article reports the scaling laws relating the synthesis conditions with the crosslinking density (νe) and swelling degree (S) of poly(N‐vinylimidazole)…”
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Equilibrium swelling properties of poly( N-vinylimidazole-co-sodium styrenesulfonate) hydrogels by Valencia, Joaquı́n, Piérola, Inés F.

“…Hydrogels of N-vinylimidazole (VI) and sodium styrenesulfonate (SSS) were synthesized by radical crosslinking copolymerization. Contrary to expectation, for…”
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pH-dependence of the swelling capacity of poly(N-vinylimidazole) hydrogels by Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F.

“…The swelling capacity (S) of poly(N‐vinylimidazole) (PVI) hydrogels in aqueous acid solutions was measured as a function of the pH, the nature of the acid, and…”
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Internal Dynamics of Poly(Methylphenylsiloxane) Chains as Revealed by Picosecond Time Resolved Fluorescence by Dias, Fernando B, Lima, Joao C, Piérola, Inés F, Horta, Arturo, Maçanita, Antonio L

“…The dynamics of linear polymethylphenylsiloxane chains in dilute methylcyclohexane solution was probed with picosecond time-resolved fluorescence. Experiments…”
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Compression elastic modulus of neutral and protonated poly(N-vinylimidazole) hydrogels by Valencia, Joaquín, Baselga, Juan, Pacios, Isabel E., Piérola, Inés F.

“…The compression modulus of poly(N‐vinylimidazole) (PVI) hydrogels synthesized by cross‐linking polymerization in aqueous solution, was measured at room…”
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Molecular Dynamics of Methylphenylsiloxane Chains by Horta, Arturo, Piérola, Inés F, Maçanita, Antonio L

“…Molecular dynamics is used to analyze the motions of backbone and lateral groups that lead to the formation and dissociation of excimer-forming conformations…”
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Dynamics of Cyclic Methylphenyltrisiloxane in the Picosecond to Nanosecond Time Range by Dias, Fernando B, Lima, João C, Maçanita, Antonio L, Horta, Arturo, Piérola, Inés F

“…The dynamics of the cyclic trimer of methylphenyl-substituted siloxane (1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane; CMPS3) in dilute methylcyclohexane…”
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Interpretation of the polyelectrolyte and antipolyelectrolyte effects of poly(N-vinylimidazole-co-sodium styrenesulfonate) hydrogels by Valencia, Joaquín, Piérola, Inés F.

“…Hydrogels of N‐vinylimidazole (VI) and sodium styrenesulfonate (SSS) were synthesized in aqueous solution by radical crosslinking copolymerization with…”
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Factors driving the protonation of poly(N-vinylimidazole) hydrogels by Molina, M. Jesús, Gómez-Antón, M. Rosa, Piérola, Inés F.

“…Poly(N‐vinylimidazole) hydrogels immersed in aqueous acid solutions produce an increment in the pH of the bath because of proton uptake by basic imidazole…”
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