Chromatographic and adsorption properties of poly(1-trimethylsilyl-1-propyne) and their stabilization by adding poly(1-phenyl-1-propyne)

Belotserkovskaya, V. Yu.; Yakovleva, E. Yu.

doi:10.1016/j.chroma.2013.05.017

Cited by 17 publications

(7 citation statements)

References 48 publications

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“…The heating temperature might also be increased over 260°C, but this heating is accompanied with a high background signal (Figure ), which indicates the chemical decomposition of the stationary phase. Thermal stability of PTMCS, especially in the oxidizing medium, has been widely investigated and the destruction temperature of PTMSP, according to different authors , was within 272–304°C. The lower destruction temperature of PTMSP, found from chromatographic data, is connected to the higher sensitivity of chromatographic detectors to the appearance of decomposition products of the polymer stationary phase compared to the gravimetric instruments (e.g., thermogravimetry).…”

Section: Resultsmentioning

confidence: 99%

“…Chromatographic methods have already been used for a long time in polymer investigations and utilization of PTMCS in GC allowed to find definite changes of these stationary phase properties during its operation . These changes are usually associated with the physical aging of PTMSP and the same methods were proposed for the stabilization of the stationary phase , which are known from membrane chemistry . At the same time, the study of the aging process itself using chromatographic methods has not been carried out so far, and this study aims to fill this gap.…”

Section: Introductionmentioning

confidence: 99%

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Thermal stability of poly[1‐(trimethylsilyl)‐1‐propyne] and the gas chromatographic stationary phase based on it

Shiryaeva

Попова

Korolev

et al. 2018

J of Separation Science

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The thermal stability of poly[1-(trimethylsilyl)-1-propyne] is investigated by heating the capillary column with this polymer as the stationary phase with the subsequent separation of the test mixture of light hydrocarbons. It is shown that heating of the column up to 130°C does not cause a decrease in efficiency or in the retention time of solutes. A further increase in temperature results in both decrease in column efficiency and sorbate retention. However, a decrease in column retentivity goes in one way for all the tested hydrocarbons. At the same time, the efficiency of the column is changed to a lesser degree for methane and ethane up to the temperature of polymer degradation, while for propane, butane, and iso-butane the difference is rather sharp. The most expressed decrease in efficiency was found for iso-butane: the column efficiency for this sorbate versus temperature of heating had two stages. The diffusion coefficients for sorbates in the polymeric phase were also evaluated and the sharp decrease in their values was found after the column heating.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal stability of poly[1‐(trimethylsilyl)‐1‐propyne] and the gas chromatographic stationary phase based on it

Shiryaeva

Попова

Korolev

et al. 2018

J of Separation Science

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“…Highly permeable glassy polymers (especially PTMSP) have a disadvantage: they are prone to fast aging which is revealed in decreases in free volume, permeability, 70,71 and chromatographic parameters (elution order of compounds, peak symmetry, retention times). 72 It has been shown 71 that three different mechanisms can be involved in aging of PTMSP: (1) physical aging (contraction of polymer matrix), (2) adsorption aging (sorption of aerosols, e.g., vacuum oil), and (3) chemical aging (oxidation of double bonds with formation of carbonyls). For PTMSP phase in inert atmosphere of chromatographic column the mechanisms 2 and 3 are unlikely and probably mechanism 1 prevails.…”

Section: Polymers Above and Below The Glassmentioning

confidence: 99%

“…For PTMSP phase in inert atmosphere of chromatographic column the mechanisms 2 and 3 are unlikely and probably mechanism 1 prevails. It complicates not only the studies of such polymers using the IGC method but also their analytical applications 72 because the observed retention times become variable.…”

Section: Polymers Above and Below The Glassmentioning

confidence: 99%

Investigation of Polymers by Inverse Gas Chromatography

Yampolskii

Белов

2015

Macromolecules

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This Perspective conveys to the general reader of Macromolecules the basic ideas and possibilities of inverse gas chromatography (IGC). This method which appeared about 50 years ago is now a versatile tool for investigation of the interactions of polymers with vapors and study of polymer properties. The focus of this Perspective is on the study of bulk sorption of low molecular weight compounds in polymers. The results of chromatographic determination of solubility coefficients and sorption isotherms as well as the diffusion coefficients of vapors in polymers are discussed. Special attention is paid to the thermodynamic properties of glassy polymers on the phenomena in the vicinity of the glass transition. Information on IGC as a probe method for the determination of free volume in polymers is also presented.

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“…However, polymeric molecules in solid polymer tend to pack more densely with the time and to decrease nonequilibrium free volume [19]. This process is called "physical aging" and negatively affects chromatographic properties of PLOT column [20].…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of GC capillary column with hypercrosslinked stationary phase

Kanat’eva

Korolev

Kurganov

2021

J of Separation Science

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For the first time, highly porous hypercrosslinked polystyrene layer was synthesized within a gas chromatography capillary column and successfully deposited onto the capillary walls generating porous layer open-tubular capillary column.Elaborated three steps synthetic procedure provides tightly bonded porous polymeric layer and ensues complete elimination of particle shedding and the needs for particle traps. Due to highly developed surface area, porous layer opentubular column provides strong solute retention that is useful for the separation of various volatile solvents and light gas compounds including ethane, ethylene, ethyne. Aqueous injections will not harm the column.

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Chromatographic and adsorption properties of poly(1-trimethylsilyl-1-propyne) and their stabilization by adding poly(1-phenyl-1-propyne)

Cited by 17 publications

References 48 publications

Thermal stability of poly[1‐(trimethylsilyl)‐1‐propyne] and the gas chromatographic stationary phase based on it

Thermal stability of poly[1‐(trimethylsilyl)‐1‐propyne] and the gas chromatographic stationary phase based on it

Investigation of Polymers by Inverse Gas Chromatography

Preparation and properties of GC capillary column with hypercrosslinked stationary phase

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