Growth and toxic gas sensing properties of poly(urethaneimide) thin films

Youssef, Ismail Ben; Sarry, F.; Nysten, Bernard; Alexieva, Gergana; Strashilov, V.L.; Kolev, Iliyan; Alem, Halima

doi:10.1016/j.talanta.2016.03.021

Cited by 9 publications

(13 citation statements)

References 30 publications

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“…As evident from the kinetic responses in Ref. , the oscillator steadily went down some time after the analyte inlet. This was due to the increased amount of adsorbed gas which led to increased viscosity of the film and to a loss going beyond the limit of sustainability of the oscillator performance.…”

Section: Introductionmentioning

confidence: 84%

“…To our knowledge, until our study presented in Ref. , there have been only few literature works reporting on the development of selective layers for sensors for pyridine, while HMI sensitive layers appear to have not yet been reported. Due to its high sensitivity, the quartz crystal microbalance (QCM) method was used in this study to monitor the interaction between pyridine and HMI with the polymer layer.…”

Section: Introductionmentioning

confidence: 90%

“…As mentioned before, we have already studied the response of AT‐cut quartz resonators coated with polyurethaneimide (PUI), containing a controlled number of tertiary amine groups brought by the N ‐methyldiethanolamine (MDEA) group incorporated on the polymer backbone . Thanks to using our QCM unit, Figure , we could show for the first time that pyridine and HMI display physical sorption in the film, essentially driven by hydrogen bonds.…”

Section: Introductionmentioning

confidence: 95%

“…Among different pollutants, toxic gases naturally occupy a significant place. In a recent article, we studied the potential of poly(urethaneimide) derivatives to sensing specific toxic analytes such as pyridine (C 5 H 5 N) and hexamethyleneimine, HMI (C 6 H 13 N) . The harmful nature of these gases used as intermediates in the production of various substances such as vitamins, dyes, over‐the‐counter medications and drugs, pesticides, etc., makes the necessity of having proper means for their detection imperative.…”

Section: Introductionmentioning

confidence: 99%

“…Comparing the results at different thickness in Ref. , it is obvious that the sensitivity of the organic layer increases with increasing its thickness, because a higher amount of gas molecules are able to penetrate and load the polymer matrix. However, a particular feature of the experiment did not allow us to go beyond the qualitative frames of this general statement.…”

Section: Introductionmentioning

confidence: 99%

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Layer thickness impact on the capacity of poly(urethaneimide) for sorbing toxic gases

Kolev

Alexieva

Strashilov

et al. 2016

J of Applied Polymer Sci

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The sensitivity of a thick layer (500 nm) of poly(urethaneimide) to toxic gases such as pyridine and hexamethyleneimine was studied by the quartz crystal microbalance method. The resonant frequency was registered by a spectrum analyzer. The successful overcoming of the unfavorable impact of the increased viscous damping, typical for the standard oscillator measurement method, allowed complete understanding of the behavior of a thick polymer layer toward highly pollutant gases. Quantitative information for polymer adsorption capacity and gas diffusivity was extracted. The comparison with our recent results for thinner layers revealed strong dependence on layer thickness for pyridine whereas the corresponding effect with hexamethyleneimine was found much less significant. Intermolecular interactions and the impact of the gas physical adsorption on the polymer matrix properties were shown as the driving parameters for the sensors response. The thickness dependence provides a tool for tuning the sensitivity of a potentially efficient poly(urethaneimide) sensor for pyridine.

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Section: Introductionmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Layer thickness impact on the capacity of poly(urethaneimide) for sorbing toxic gases

Kolev

Alexieva

Strashilov

et al. 2016

J of Applied Polymer Sci

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Thermally stable poly(urethane‐imide)s with enhanced hydrophilicity for waterproof‐breathable textile coatings

Meena

Kerketta

Tripathi

et al. 2022

J of Applied Polymer Sci

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Thermally stable, waterproof, hydrophilic, breathable poly(urethane‐imide) (PUI) films were prepared as a potential replacement for the existing polyurethanes (PU) with a lower degree of thermal stability for waterproof breathable clothing. Hydrophilic PUI films were prepared by reacting 4,4′‐ diphenylmethane diisocyanate (MDI), polyethylene glycol (PEG‐1500), and pyromellitic dianhydride (PMDA), with increasing hard segment (46%–61%) and compared with polyurethane films with similar PEG content. The breathability of PUI film is significantly higher than the PU film (~20%). Interestingly, despite the high degree of water sorption, the PUI films exhibited higher waterproofness (~85%) than the PU, which has been attributed to the presence of imide functionalities. The thermal stability of PUI was higher (Tmax1 ~ 420°C, Tmax2 ~ 600°C and char yield 21%) than the analogous PU (Tmax1 ~ 360°C, Tmax2 ~ 420°C, and char yield 6%). The waterproofness, water contact angle, and glass transition temperature are found to increase with increasing imide content, while the water sorption capacity and breathability decrease. The developed PUI coated fabric withstood hydrostatic pressure of ~3000 mbar, with a WVTR of 1200 g m−2 24 h−1, bestowing it excellent candidature as a waterproof breathable fabric.

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