Potentiometric properties and impedance spectroscopic data of poly(vinyl chloride) membranes containing quaternary ammonium salts of different chemical structure

Schwake, Andree; Cammann, Karl; Smirnova, A. L.; Levitchev, Serguey S.; Khitrova, V. L.; Grekovich, Alexander L.; Vlasov, Yu. G.

doi:10.1016/s0003-2670(99)00336-0

Cited by 17 publications

(3 citation statements)

References 25 publications

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“…This suggests that the addition of a weak acid such as acetic acid can increase the total DEMF of this potentiometric titration of PQ-10 with DS, indicating that at lower pH values, the polyanion sensing membrane exhibits more signicant response to the DS polyanionic species. This is in agreement with ndings reported by Schwake et al 15 in which potentials for DOS plasticized PVC membranes doped with various quaternary ammonium species were reported for different sodium salts, including sodium acetate.…”

Section: Verication Of Non-adsorption Of Pq-10 To Ion-exchange Resinsupporting

confidence: 93%

Detecting levels of polyquaternium-10 (PQ-10) via potentiometric titration with dextran sulphate and monitoring the equivalence point with a polymeric membrane-based polyion sensor

2016

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Polymeric quaternary ammonium salts (polyquaterniums) have found increasing use in industrial and cosmetic applications in recent years. More specifically, polyquaternium-10 (PQ-10) is routinely used in cosmetic applications as a conditioner in personal care product formulations. Herein, we demonstrate the use of potentiometric polyion-sensitive polymeric membrane-based electrodes to quantify PQ-10 levels. Mixtures containing both PQ-10 and sodium lauryl sulfate (SLS) are used as model samples to illustrate this new method. SLS is often present in cosmetic samples that contain PQ-10 (e.g., shampoos, etc.) and this surfactant species interferes with the polyion sensor detection chemistry. However, it is shown here that SLS can be readily separated from the PQ-10/SLS mixture by use of an anion-exchange resin and that the PQ-10 can then be titrated with dextran sulphate (DS). This titration is monitored by potentiometric polyanion sensors to provide equivalence points that are directly proportional to PQ-10 concentrations.

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Section: Verication Of Non-adsorption Of Pq-10 To Ion-exchange Resinsupporting

confidence: 93%

Detecting levels of polyquaternium-10 (PQ-10) via potentiometric titration with dextran sulphate and monitoring the equivalence point with a polymeric membrane-based polyion sensor

2016

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“…Therefore, it can be concluded that the more lipophilic salts (MTOA-Cl, TOA-Cl) are more selective toward lipophilic anions, and the more hydrophilic salt (DDMA-Br) is more selective toward hydrophilic anions. According to Schwke et al [22], who observed similar dependences, the selectivity of PVC membranes plasticized with quaternary ammonium salts is dependent on the symmetry and length of the alkyl chains. However, the polarity of plasticizers was not significant, resulting in the lowest selectivity towards lipophilic ions for the more hydrophilic salts, and the lower concentration of cationic sites in the membrane in consequence of the exchanger leaving the membrane.…”

Section: Resultsmentioning

confidence: 77%

Properties of naproxen ion-selective electrodes

2008

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Naproxen membrane electrodes based on different plasticizers and the quaternary ammonium salts (QASs) dimethyldidecylammonium bromide, methyltrioctylammonium chloride, or tetraoctylammonium chloride, were prepared. The following basic parameters were investigated for the optimal electrode: measurement range (10), slope of the linear range of the calibration curve (-58.3 mV decade ), lifetime (2.5 months), dependence of the electrode potential on pH (5.5 -9.0), reproducibility of potential (1.2 mV) and selectivity coefficients in relation to selected organic and inorganic anions. The electrode was utilized for determination of naproxen in tablets by the calibration curve method and the standard addition method. © Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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“…In addition to that, electrochemical impedance spectroscopy (EIS) represents a powerful tool for the investigation of the of charge transfer rate and charge transport processes occurring in electrochemical systems. Thus, it is widely used for the characterization of conducting polymer films and membranes and it provides important information on the membrane condition and sensor functionality EIS has been extensively used also to investigate the influence of membrane components (ion exchangers, ionophores, plasticizers) and to understand adsorption and fouling mechanism of proteins and surfactants …”

Section: Characterization Methods Of Functional Surfacesmentioning

confidence: 99%

Self‐Assembled Polymeric Membranes and Nanoassemblies on Surfaces: Preparation, Characterization, and Current Applications

Chimisso

Maffeis

Hürlimann

et al. 2019

Macromolecular Bioscience

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Biomembranes play a crucial role in a multitude of biological processes, where high selectivity and efficiency are key points in the reaction course. The outstanding performance of biological membranes is based on the coupling between the membrane and biomolecules, such as membrane proteins. Polymer‐based membranes and assemblies represent a great alternative to lipid ones, as their presence not only dramatically increases the mechanical stability of such systems, but also opens the scope to a broad range of chemical functionalities, which can be fine‐tuned to selectively combine with a specific biomolecule. Tethering the membranes or nanoassemblies on a solid support opens the way to a class of functional surfaces finding application as sensors, biocomputing systems, molecular recognition, and filtration membranes. Herein, the design, physical assembly, and biomolecule attachment/insertion on/within solid‐supported polymeric membranes and nanoassemblies are presented in detail with relevant examples. Furthermore, the models and applications for these materials are highlighted with the recent advances in each field.

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Potentiometric properties and impedance spectroscopic data of poly(vinyl chloride) membranes containing quaternary ammonium salts of different chemical structure

Cited by 17 publications

References 25 publications

Detecting levels of polyquaternium-10 (PQ-10) via potentiometric titration with dextran sulphate and monitoring the equivalence point with a polymeric membrane-based polyion sensor

Detecting levels of polyquaternium-10 (PQ-10) via potentiometric titration with dextran sulphate and monitoring the equivalence point with a polymeric membrane-based polyion sensor

Properties of naproxen ion-selective electrodes

Self‐Assembled Polymeric Membranes and Nanoassemblies on Surfaces: Preparation, Characterization, and Current Applications

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