Temat: granica fazowa typu ciecz-ciecz - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Elektroanaliza z wykorzystaniem granic fazowych typu ciecz-ciecz
Liquid-liquid interface used for electroanalytical applications
Autorzy:: Półtorak, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2200438.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Chemiczne
Tematy:: liquid-liquid interface
voltammetry
amines
ions
electroanalysis
granica fazowa typu ciecz-ciecz
woltamperometria
aminy
jony
elektroanaliza
Opis:: This work is focused on the electroanalytical application of the system composed from two immiscible electrolyte solutions also known as the electrified liquid-liquid interface. The particular attention is given to the electroanalytical signals originating from the simple ion transfer reactions (transfer of ion either from the aqueous to the organic or from the organic to the aqueous phase) providing ionic currents that can be probed in a function of the applied potential. Advantages and limitations of the soft junctions are underlines and discussed based on the examples published in the literature. Finally, future directions are given further indicating the utility of the concerned platform for the electroanalytical applications.
Źródło:: Wiadomości Chemiczne; 2022, 76, 11-12; 841-860
0043-5104
2300-0295
Pojawia się w:: Wiadomości Chemiczne
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Poliamidy i ich synteza na spolaryzowanych granicach fazowych typu ciecz-ciecz
Polyamides and their synthesis at the polarized liquid - liquid interface
Autorzy:: Kowalewska, Karolina
Sipa, Karolina
Skrzypek, Sławomira
Półtorak, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2200432.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Chemiczne
Tematy:: poliamidy
spolaryzowane granice cieczowe
granica fazowa typu ciecz – ciecz
elektrochemia
polyamides
polarized liquid – liquid interface
liquid – liquid interface
electrochemistry
Opis:: Polyamides have found a number of applications in the commercial sector. These materials belong to a large group of chemical compounds - polymers. The interest in these polymers is still growing as new materials can be formed through chemical functionalization or simply addition of different nanomaterials. Polyamides have many unique properties (e.g. chemical resistance, tensile and abrasion resistance, high thermal stability, non-flammability and high mechanical strength even after long periods of use), and compounds such as Nylon® or Kevlar® are leading components in the production of textiles, laboratory equipment, everyday objects or structural elements. Polyamides are used in automotive industry, aviation, and even as protective materials for the military. Several methods to synthesize polyamides exists to date. The most popular are reactions between carboxylic acid chlorides and amines, polycondensation of carboxylic acids with amines or polycondensation of amino acids. Especially spectacular is a reaction of pulling polyamide thread from the liquid-liquid interface known as the "nylon rope trick" experiment (https://www.youtube.com/watch?v=S6asCwVG8zU). Here, the reaction between 1,6-diaminohexane dissolved in the aqueous phase and adipoyl chloride being present in the immiscible with water organic phase is fast and spontaneous. In this work, we have proved that the synthesis of the polyamides at the liquid-liquid interface can be controlled using electrochemistry. In this respect, the electrochemically driven interfacial ion transfer or electrochemically modulated local pH changes are used to trigger the polycondensation within the locus defined by the liquid-liquid interface. The introduction to the electrified soft junction and its modification with polyamide is discussed in the concerned work.
Źródło:: Wiadomości Chemiczne; 2022, 76, 9-10; 789--802
0043-5104
2300-0295
Pojawia się w:: Wiadomości Chemiczne
Dostawca treści:: Biblioteka Nauki

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