Gas Chromatography Mass Spectrometric Analysis of Chemically Derivatized Hexahydrotriazine-Based Hydrogen Sulfide Scavengers: 1

Taylor, Graeme K.; Matherly, Ron

doi:10.1021/ie100047b

Cited by 19 publications

(23 citation statements)

References 2 publications

(3 reference statements)

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“…The crosslinking density of the cured DEHP‐n/DGEBA composites can be calculated by using the rubber elasticity model in Eq

true ν e = E r / 3 Ψ R T

…”

Section: Resultsmentioning

confidence: 99%

“…The crosslinking density of the cured DEHP-n/DGEBA composites can be calculated by using the rubber elasticity model [54][55] in Eq (2) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 where V e is the crosslinking density; E r is the storage modulus; y is the front factor; R is gas constant; T is the absolute temperature. The storage modulus at T g + 50 o C is taken as the rubbery modulus to calculate the cross-linking density.…”

Section: Application Of Dehp-nmentioning

confidence: 99%

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Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

et al. 2018

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Epoxy resins has been the largest industrial thermosetting resins due to their excellent performance. But the degradation and recycling of large amount of cured epoxy resins wastes is still a challenge, inevitably causing serious pollution to the environment. Here, we represent a feasible method to synthesize recyclable hyperbranched polymers (epoxy‐ended hyperbranched polymers, DEHP‐n, n=1, 2, 3 and 4). DEHP‐n can be self‐crosslinked or self‐cured to form high performance films, and the cured film can be completely and rapidly degraded in solution of DMF and H2O2 at low temperature (90 oC), showing excellent recyclability. High performance molecular composites without phase‐separation can be obtained by blending DEHP‐n and diglycidyl ether bisphenol A (DGEBA). It is much important that DEHP‐n not only substantially improve tensile strength of about 67% and toughness of about 154% on DGEBA, and but also promote the degradation degree about 3 times when the composites contains only about 12 wt% DEHP‐n. The degradation mechanism of cured DEHP‐n and DEHP‐n/DGEBA composites was analyzed by GC‐Mass of their pyrolysis products. The multifunctional DEHP‐n may open avenue for synthesis of novel recycling epoxy resins and degradation of conventional epoxy resins, besides simultaneous improvement of strength and toughness.

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“…The crosslinking density of the cured DEHP‐n/DGEBA composites can be calculated by using the rubber elasticity model in Eq

true ν e = E r / 3 Ψ R T

…”

Section: Resultsmentioning

confidence: 99%

Section: Application Of Dehp-nmentioning

confidence: 99%

Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

et al. 2018

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“…Reação de captura do H 2 S pela 1,3,5-triazinana (23) A captura de H 2 S é um processo econômico, pois as triazinanas sequestrantes apresentam boa solubilidade em solução aquosa. 25 O método consiste na injeção da solução aquosa contendo o derivado triazinânico no tubo que transporta o petróleo do poço produtor. Ao longo do trajeto as triazinanas reagem com o H 2 S, reduzindo a presença deste gás no campo de petróleo.…”

Section: Figura 5 Inseticidas Comerciais Derivados Das Nitroguanidinasunclassified

Synthesis and Applications of 1,3,5-Triazinanes

Reis¹,

Romeiro²,

Damasceno³

et al. 2013

Revista Virtual De Química

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The substances belonging to the class heterocyclic 1,3,5-triazinanes are extremely important because they stand out for the variety of biological activities, technological applications, such as insecticides, explosives and reagents for various organic reactions. In organic synthesis they are considered as being substances with simple preparation and low cost, which present an option for obtaining various other heterocyclic compounds, such as: imidazole, imine, aziridine, and diazirinamacrocycles.Keywords: Azoheterocycles; Synthesis; 1,3,5-Triazinanes; Formaldehyde. ResumoOs heterociclos da classe 1,3,5-triazinana são importantes por se destacarem pela grande variedade de atividades biológicas e aplicações tecnológicas, por exemplo, inseticidas, explosivos, e como reagentes para diversas reações orgânicas. Em síntese orgânica esse composto heterocíciclo se destaca por ser uma substância de simples preparação, custo baixo e que se apresenta como opção para obtenção de vários outros compostos heterociclos, como imidazol, imina, aziridina, diazirina e sistemas macrociclos.

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“…[5] Cyclic amine 1,3,5tris(2-hydroxyethyl)-1,3,5-triazinane is among the most modern and utilised sequestering agents because of its effectiveness; it acts in mediums at low or average H 2 S concentration, and has a variety of other interesting activities. [3,[6][7][8][9][10][11] Figure 1 shows structures of the cited sequestering agents.…”

Section: Introductionmentioning

confidence: 99%

“…The main methods are based on mass loss and gravimetric assays; also, they are associated with the risky manipulation of potentially harmful products. [12][13][14] Some other methods for monitoring hydrogen sulfide are sensor-based devices, such as semiconducting oxides, electrochemical sensors, conducting-polymer sensors, quartz-crystal microbalances and optical sensors. These sensors have been widely used in a number of applications for real-time monitoring of H 2 S; however, these analysis can also suffer from a number of biases.…”

Section: Introductionmentioning

confidence: 99%

¹H NMR for quantifying sulfide trapping efficiency by using 1,3,5‐tris(2‐hydroxyethyl)‐1,3,5‐triazinane

Canuto

Echevarrı́a

2014

Magnetic Reson in Chemistry

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Hydrogen sulfide (H2S) is an extremely toxic colourless gas; it is corrosive and denser than air. It usually happens in oil and natural gas fields, refineries, coal mines, and in some industrial effluent treatment systems. This work presents an alternative method of monitoring and quantifying H2S trapping efficiency by using 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane as a sequestering agent, and sodium sulfide as a source of sulfide ion, through (1)H NMR spectroscopy. The results proved that the reaction occurs very quickly at 20 °C at pH 7 and 10. 3,5-di(2-hydroxyethyl)-1,3,5-thiodiazinane and 5-(2-hydroxyethyl)-1,3,5-dithiozinane were observed and quantified; it was evidenced that (1)H NMR spectroscopy can be applied as a fast and effective method to quantify H2S trapping efficiency.

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Gas Chromatography Mass Spectrometric Analysis of Chemically Derivatized Hexahydrotriazine-Based Hydrogen Sulfide Scavengers: 1

Cited by 19 publications

References 2 publications

Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

Synthesis and Applications of 1,3,5-Triazinanes

¹H NMR for quantifying sulfide trapping efficiency by using 1,3,5‐tris(2‐hydroxyethyl)‐1,3,5‐triazinane

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Gas Chromatography Mass Spectrometric Analysis of Chemically Derivatized Hexahydrotriazine-Based Hydrogen Sulfide Scavengers: 1

Cited by 19 publications

References 2 publications

Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

Synthesis of Recyclable Hyperbranched Polymers with High Efficiency of Promoting Degradation of Epoxy Resins

Synthesis and Applications of 1,3,5-Triazinanes

1H NMR for quantifying sulfide trapping efficiency by using 1,3,5‐tris(2‐hydroxyethyl)‐1,3,5‐triazinane

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¹H NMR for quantifying sulfide trapping efficiency by using 1,3,5‐tris(2‐hydroxyethyl)‐1,3,5‐triazinane