Fast gas chromatography–mass spectrometry method for the detection of gas phase composition of polyurethane foam and its role in foam thermal conductivity
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in: Journal of Cellular Plastics [Elektronische Ressource], Jahrgang 56.2020, Nr. 5, 17.03.2020, S. 531-545.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Fast gas chromatography–mass spectrometry method for the detection of gas phase composition of polyurethane foam and its role in foam thermal conductivity
AU - Galakhova, Anastasiia
AU - Rieß, Gisbert
N1 - Publisher Copyright: © The Author(s) 2020.
PY - 2020/3/17
Y1 - 2020/3/17
N2 - This paper presents an enhanced gas chromatography–mass spectrometry method for the separation of cell gases in polyurethane foam. The novel method was then tested on several polyurethane foams produced at different mixing times, showing successful results. The measurement of gas content in polyurethane foams has been rarely considered in published literature. This parameter, indeed, plays a critical role in the deterioration of polyurethane foam thermal conductivity. This is because of the diffusion of gases which is the main mechanism of foam aging. Hence, an improved gas chromatography–mass spectrometry method was developed to offer simultaneous separation of several types of gas in only one column, using gas chromatography as its main concept. The composition of a sample gas consisting of N 2, O 2, CO 2, and C 5H 10 was accurately calculated by measuring the ratio of each peak area on the chromatograms, with argon being used for sampling. This fast and simple method was found to be useful, on one hand for the accurate determination of C 5H 10 and CO 2 cell gases used as blowing agents, and on the other hand for N 2 and O 2 air gases that diffuse rapidly from the surrounding environment into foam cells. The effect of mixing time on foam kinetics, cellular structure, foam thermal conductivity, and the overall thermal conductivity of cell gas mixture was also investigated. By complex analysis of foam density, the presence of open cells, cell size, and thermal conductivity of cell gas mixture, the lowest measured value of foam thermal conductivity was explained. The major goal of these experiments was to show the importance of foam cell gas analysis, together with foam structure, which is uniquely done to contribute to the understanding of polyurethane foam thermal conductivity. The thermal conductivity of cell gas mixture is considered as an example of the potential applications of this novel gas chromatography–mass spectrometry method.
AB - This paper presents an enhanced gas chromatography–mass spectrometry method for the separation of cell gases in polyurethane foam. The novel method was then tested on several polyurethane foams produced at different mixing times, showing successful results. The measurement of gas content in polyurethane foams has been rarely considered in published literature. This parameter, indeed, plays a critical role in the deterioration of polyurethane foam thermal conductivity. This is because of the diffusion of gases which is the main mechanism of foam aging. Hence, an improved gas chromatography–mass spectrometry method was developed to offer simultaneous separation of several types of gas in only one column, using gas chromatography as its main concept. The composition of a sample gas consisting of N 2, O 2, CO 2, and C 5H 10 was accurately calculated by measuring the ratio of each peak area on the chromatograms, with argon being used for sampling. This fast and simple method was found to be useful, on one hand for the accurate determination of C 5H 10 and CO 2 cell gases used as blowing agents, and on the other hand for N 2 and O 2 air gases that diffuse rapidly from the surrounding environment into foam cells. The effect of mixing time on foam kinetics, cellular structure, foam thermal conductivity, and the overall thermal conductivity of cell gas mixture was also investigated. By complex analysis of foam density, the presence of open cells, cell size, and thermal conductivity of cell gas mixture, the lowest measured value of foam thermal conductivity was explained. The major goal of these experiments was to show the importance of foam cell gas analysis, together with foam structure, which is uniquely done to contribute to the understanding of polyurethane foam thermal conductivity. The thermal conductivity of cell gas mixture is considered as an example of the potential applications of this novel gas chromatography–mass spectrometry method.
KW - polyurethane foam
KW - gas chromatography–mass spectrometry
KW - gas composition
KW - cell gas analysis
KW - blowing agent
KW - Thermal Conductivity
KW - thermal conductivity
KW - Polyurethane foam
UR - http://www.scopus.com/inward/record.url?scp=85082108342&partnerID=8YFLogxK
U2 - 10.1177/0021955X20912206
DO - 10.1177/0021955X20912206
M3 - Article
VL - 56.2020
SP - 531
EP - 545
JO - Journal of Cellular Plastics [Elektronische Ressource]
JF - Journal of Cellular Plastics [Elektronische Ressource]
SN - 1530-7999
IS - 5
ER -