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Characterization of odorants in adhesives / Philipp Denk in ADHESION - ADHESIVES + SEALANTS, Vol. 15, N° 2/2018 (2018)
[article]
Titre : Characterization of odorants in adhesives Type de document : texte imprimé Auteurs : Philipp Denk, Auteur ; Eva Ortner, Auteur ; Andrea Büttner, Auteur Année de publication : 2018 Article en page(s) : p. 10-13 Note générale : Bibliogr. Langues : Multilingue (mul) Catégories : Caractérisation
Chromatographie en phase gazeuse
Colles:Adhésifs
Composés organiques volatils
Odeurs -- Analyse
Polyacrylates
Séparation (technologie)Index. décimale : 668.5 Parfums et cosmétiques Résumé : Adhesives generally exhibit an unpleasant odor. Little is currently known about the substances that are responsible for these odors and how they may affect the human organism. The present analyses investigated the substances that are responsible for these unpleasant odors. Note de contenu : - The challenges of odor analysis
- Identification and quantification of odorants
- Results of acrylate-based adhesives
- Fig. 1 : the separation of volatile compounds from non-volatile components is carried out of using the solvent-assisted flavor evaporation (SAFE) technique
- Fig. 2 : Two dimensional gas chromatographic separation of odor extracts using the example of (E)-non-2-enal. (A) FID chromatogram, first chromatographic system : The marked area shows the perceived odor and the associated transfer window, (B) Chromatogram after chromatographic separation in the second system : The arrow marks the transferred area with associated perceived odor quality. (C) Mass spectrum (EI, 70 eV) of (E)-non-2-enalEn ligne : https://drive.google.com/file/d/1xxchhzicilciY-8miBT_h24gVHuPBi2m/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30726
in ADHESION - ADHESIVES + SEALANTS > Vol. 15, N° 2/2018 (2018) . - p. 10-13[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20007 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Connecting odour and volatiles : Headspace analytical testing sheds light on a complicated subject Type de document : texte imprimé Auteurs : Mark Pavlin, Auteur ; Chelsea Poston, Auteur ; Bing Yuan Année de publication : 2018 Article en page(s) : p. 34-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésifs thermofusibles
Chimie analytique
Chromatographie en phase gazeuse
Composés organiques volatils
Elastomères
Gommes et résines
Hydrocarbures
Odeurs -- Analyse
Spectrométrie de masseIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : The relationship between odour and the release of chemical compounds is complex; some people equate them, although odour is determined by sensory perception and volatile organic compound (VOC) content is determined by an analytical measurement. We explored the relationship for hot-melt adhesives (HMAs) and their major components, tackifier resins and elastomers. Note de contenu : - Cause and effect
- Where do the VOCS come from ?
- Odour panel testing : one place to start
- Headspace GC-MS analysis : for much more specific information
- Linking odour and VOC
- Fig. 1 : Origin of VOC of hygiene goods
- Fig. 2 : Headspace GC-MS chromatograms for three hydrocarbon tackifiers
- Fig. 3 : Headspace GC-MS results of samples incubated at different temperatures
- Fig. 4 : Malodor trend and volatiles levels determined by GC-MS (headspace GC-MS : samples were incubated at 160°C for 4 hours)
- Table : Odour panel testing results for four hydrocarbon tackifiersEn ligne : https://drive.google.com/file/d/1w1EyWwD_aiIly0evXaU9G_kRhvQB1ZFA/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31078
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10/2018) . - p. 34-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20261 - Périodique Bibliothèque principale Documentaires Disponible Decoding source of leather odor : a quantitative analysis with heracles NEO / Haonan Shi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 4 (04/2024)
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Titre : Decoding source of leather odor : a quantitative analysis with heracles NEO Type de document : texte imprimé Auteurs : Haonan Shi, Auteur ; Haiming Cheng, Auteur ; Jin Zhou, Auteur Année de publication : 2024 Article en page(s) : p. 165-173 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse quantitative (chimie)
Composés organiques volatils -- Analyse
Cuir
Cuirs et peaux de bovins
Cuirs et peaux de moutons
Odeurs -- Analyse
OlfactométrieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Leather products are widely used in our daily life and in close contact with users, but the pleasant feeling during its usage is severely affected by the odor volatilized from the leather surface. In this study, a quantitative analysis method to investigate the differences in the odor profiles among four types of leather was proposed. The primary olfactory constituents of four leather types were examined by Heracles NEO ultra-fast gas-phase electronic nose, including Principal Component Analysis (PCA) and Discriminant Factor Analysis (DFA). In chrome-tanned cattle hide leather, the substance with the highest content was 2,4-Dinitrotoluene, while methyl dodecanoate was the predominant compound in chromefree cattle hide leather. Notably, chrome-tanned sheepskin leather exhibited higher levels of dodecanal, clopyralid, n-octylbenzene, propyl cinnamate, and 3-methylhexadecane. Similarly, chrome-free sheepskin leather contained higher levels of dodecanal, clopyralid, n-octylbenzene, propyl cinnamate, 3-methylhexadecane, and tetradecanol. These findings indicate that each of the four types of leather possesses distinctive compounds, while also sharing common compounds. Furthermore, the results indicate that radar plots along with PCA and DFA analyses can effectively differentiate between the four types of leather. Note de contenu : - EXPERIMENTAL : Materials and sampling process - Heracles NEO instrumentation and settings - Data analysis and comparison
- RESULTS : Qualitative analysis of volatile compounds by Heracles NEO e-nose - Chemical pattern recognition analysis - PCA principal component analysis - DFA discriminant factor analysis
- Table 1 : The set parameters of Heracles NEO
- Table 2 : Possible volatile compounds identified in CTCL and relative contents
- Table 3 : Possible volatile compounds identified in CFCL and relative contents
- Table 4 : Possible volatile compounds identified in CTSL and relative contents
- Table 5 : Possible volatile compounds identified in CFSL and relative contentsDOI : https://doi.org/10.34314/yv80gx56 En ligne : https://drive.google.com/file/d/1zb1DL6sd8C_ks6W60OR52x0MHQ4lDigX/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40824
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 4 (04/2024) . - p. 165-173[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24674 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : The nose has had its day : Instrumental analysis of odor for automotive parts Type de document : texte imprimé Auteurs : Stefan Hofele, Auteur Année de publication : 2024 Article en page(s) : p. 45-47 Langues : Anglais (eng) Catégories : Automobiles -- Habitacles
Matières plastiques -- Odeurs
Mesure -- Instruments
Odeurs -- Analyse
OlfactométrieIndex. décimale : 668.4 Plastiques, vinyles Résumé : Odor is an important criterion when buying a car. Until now, manufacturers and suppliers have analyzed odor using the noses of trained persons. However, different persons judge the same odor differently. Instrumental analysis can measure odors objectively and rigorously. Odor can thus be globally standardized and subsequently efficiently reduced. Note de contenu : - The VOC-G method works differently
- Improving the odor of parts
- Measurement system analyses according to process 1 are also possible
- 7-day prediction by algorithm
- Fig. 1 : Structure of the olfactory pyramid, with graphical weighting of the individual intervals: Substances associated with the heart note are perceived more strongly than those from the other two regions
- Fig. 2 : The results of the VOC-G method and two panels for different materials show that the process provides very good results
- Fig. 3 : The measurements performed during production show that the deviations from the mean value are very small. The human panel, on the other hand, has no means of distinguishing such small nuances
- Fig. 4 : Checking of the 7-day prediction shows that the values agree very well with panel test values for materials that had been preconditioned for 7 days
- Table : Rating table of the odor intensity according to VDA 270En ligne : https://drive.google.com/file/d/1FZrMg-S_0kUkFG0QA-fZ9iRFfv2maXSm/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40950
in PLASTICS INSIGHTS > Vol. 114, N° 2-2024 (2024) . - p. 45-47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24542 - Périodique Bibliothèque principale Documentaires Disponible