Alternative coating solvent / Antoni Nogués in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2012)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2012) . - p. 22-24 Titre : Alternative coating solvent : Non-labelled alternative to hazardous solvents available in low-odour form Type de document : texte imprimé Auteurs : Antoni Nogués, Auteur ; Paul Guillaume Schmitt, Auteur ; Bernard Monguillon, Auteur Année de publication : 2012 Article en page(s) : p. 22-24 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs Composés organiques volatils Diméthylsulfoxyde Odeurs -- Lutte contre Revêtements -- Additifs Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : Common polar aprotic solvents used in coating formulations (such as NMP, DMF or NEP) have hazardous toxicological profiles. Dimethyl sulfoxide (DMSO) has similar properties but is safer, requiring no hazard labelling. A way has now been found to remove the unpleasant odour usually associated with this solvent, making its use appropriate in some rheological additives to improve anti-settling and anti-sagging properties. Note de contenu : - DMSO properties are similar to more toxic solvents - DMSO has a favourable toxicity profile - Resolving the problem of odour - Current applications for DMSO - Rheological additives reformulated with DMSO En ligne : https://drive.google.com/file/d/15L8Z1VyRHhsNEB_io8PbdpFaZKGGltvi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14333 [article]

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Carbon fiber PAN precursor production - new approach / Franco Francalanci in CHEMICAL FIBERS INTERNATIONAL, Vol. 68, N° 1 (03/2018)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > Vol. 68, N° 1 (03/2018) . - p. 32-34 Titre : Carbon fiber PAN precursor production - new approach Type de document : texte imprimé Auteurs : Franco Francalanci, Auteur ; Lucrezia Garofalo, Auteur ; Massimo Marinetti, Auteur ; Roberto Proserpio, Auteur Année de publication : 2018 Article en page(s) : p. 32-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Diméthylsulfoxyde Fibres de carbone Filature Polyacrylonitrile Polymérisation Index. décimale : 677 Textiles Résumé : Among the different processes industrially used for carbon fiber PAN precursor production, the most popular are: solution polymerization and spinning in DMSO and water suspension polymerization followed by spinning in DMSO. A new approach is described which joins the advantages of both processes making it possible to industrially use a 2-step process with water suspension polymerization and spinning in DMSO. The key for success is the efficient preparation of a good spinning solution starting from polymer powder and aqueous solvent. Note de contenu : - Table 1. Summary of existing industrial processes - Table 2. Dope formation temperature - Fig. 1. DMSO freezing point versus water - Fig. 2. Dope formation curves - Fig. 3. Dope viscosity vs water content - Fig. 4. Gelation trend - Fig. 5. Gel reversibility En ligne : https://drive.google.com/file/d/1M6nKrZLe1rtoVGgYHz03f74atfU2uyKi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30268 [article]

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Carbon fiber PAN precursor production - new approach / Franco Francalanci in CHEMICAL FIBERS INTERNATIONAL, (10/2018)  

[article]  inCHEMICAL FIBERS INTERNATIONAL > (10/2018) . - p. 33-35 Titre : Carbon fiber PAN precursor production - new approach Type de document : texte imprimé Auteurs : Franco Francalanci, Auteur ; Lucrezia Garofalo, Auteur ; Massimo Marinetti, Auteur ; Roberto Proserpio, Auteur Année de publication : 2018 Article en page(s) : p. 33-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Diméthylsulfoxyde Filature Polyacrylonitrile Polymérisation Procédés de fabrication Solutions aqueuses (chimie) Index. décimale : 677.4 Textiles artificiels Résumé : Among the different processes industrially used for carbon fiber PAN precursor production, the most popular are: solution polymerization and spinning in DMSO and water suspension polymerization followed by spinning in DMSO. A new approach is described which joins the advantages of both processes making it possible to industrially use a 2-step process with water suspension polymerization and spinning in DMSO. The key for success is the efficient preparation of a good spinning solution starting from polymer powder and aqueous solvent. Note de contenu : - New process description - Table 1 : Summary of exixting industrial processes - Table 2 : Dope formation temperature - Fig. 1 : DMSO freezing point versus water - Fig. 2 : Dope formation curves - Fig. 3 : Dope viscosity vs. water content - Fig. 4 : Gelation trend - Fig. 5 : Gel reversibility En ligne : https://drive.google.com/file/d/1mRvtQNvAuGJwhiX7FHeN0S5R8QC2fAL9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31244 [article]

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Exhaust dyeing of meta-aramid yarn at low temperature and time / Komal Kukreja in COLORATION TECHNOLOGY, Vol. 139, N° 5 (10/2023)  

[article]  inCOLORATION TECHNOLOGY > Vol. 139, N° 5 (10/2023) . - p. 519-526 Titre : Exhaust dyeing of meta-aramid yarn at low temperature and time Type de document : texte imprimé Auteurs : Komal Kukreja, Auteur ; Prasanta K. Biswas, Auteur Année de publication : 2023 Article en page(s) : p. 519-526 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorants -- Absorption Colorants cationiques Diméthylsulfoxyde Essais (technologie) Fibre aramide Fibres textiles -- Propriétés mécaniques Solidité de la couleur Teinture -- Fibres textiles synthétiques Teinture par épuisement Index. décimale : 667.3 Teinture et impression des tissus Résumé : Exhaust dyeing of aramid fibre is difficult due to its high crystalline and compact structure. In this study aramid yarn is pre-treated with solvent dimethyl sulphoxide to facilitate the dyeing process and then dyeing is achieved with a cationic dye. Pre-treatment at high temperature leads to the reduction in tensile strength of yarn which is not desirable. Therefore, in this work pre-treatment has been carried out at different temperatures and time to standardise those parameters to enhance the dye uptake with minimum reduction in strength. Further, dyeing temperature and time has been standardised keeping the standard pre-treatment parameters fixed. From the study, pre-treatment temperature of 30°C for 10 min and dyeing temperature of 100°C for 30 min are found suitable for better colour strength without much compromising on strength of yarn. The fastness properties of untreated and treated dyed yarns were comparable. Note de contenu : - MATERIAL AND METHOD - RESULTS AND DISCUSSION : Effect of pre-treatment time and temperature on mechanical properties of yarn - Characterisation of DMSO treated samples - Effect of dyeing temperature and dyeing time on colour strength - Colour fastness testing of dyed meta-aramid yarn samples - Table 1 : Meta-aramid yarn pre-treated at temperature 90°C - Table 2 : Meta-aramid yarn pre-treated for15 min - Table 3 : Meta-aramid yarn pre-treated for temperature 30°C - Table 4 : Average diameter and standard deviation of meta-aramid yarn - Table 5 : Crystallinity percentage in untreated and treated meta-aramid yarn DOI : https://doi.org/10.1111/cote.12669 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12669 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39832 [article]

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Investigating the in-solution photodegradation pathway of diamond green G by chromatography and mass spectrometry / Francesca Sabatini in COLORATION TECHNOLOGY, Vol. 137, N° 5 (10/2021)  

[article]  inCOLORATION TECHNOLOGY > Vol. 137, N° 5 (10/2021) . - p. 456-467 Titre : Investigating the in-solution photodegradation pathway of diamond green G by chromatography and mass spectrometry Type de document : texte imprimé Auteurs : Francesca Sabatini, Auteur ; Ilaria Degano, Auteur ; Maarten van Bommel, Auteur Année de publication : 2021 Article en page(s) : p. 456-467 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse qualitative (chimie) Analyse quantitative (chimie) Caractérisation Colorants Diméthylsulfoxyde Eau Photodétérioration Solutions (chimie) Teinture -- Fibres textiles Vert Index. décimale : 667.3 Teinture et impression des tissus Résumé : Diamond Green G (CI 42040, Basic Green 1) is a triarylmethane dye mostly employed in the industrial dyeing of miscellaneous natural and artificial textile fibres, in the production of printing inks and as an anti-fungal agent for aquaculture products. Diamond Green (DG) tends to fade under light irradiation, similar to several other dyes and pigments belonging to the triarylmethane family. In this paper, an in-solution degradation study was carried out to shed light on DG photostability. The experiments were performed by artificially irradiating DG in water and dimethyl sulphoxide, and analysing aliquots sampled at different time intervals by ultra-high performance liquid chromatography coupled with diode array detector quadrupole and time of flight tandem mass spectrometry. The degradation products formed were characterised and the product-ion spectra discussed and interpreted. On the basis of the structure of the identified compounds and their kinetic trend in relation to the accelerated ageing time, degradation mechanisms were proposed for DG, taking into account the role played by the solvent. Finally, the dyeing formulation of an historical textile sample, collected from a stage costume worn in a Zeffirelli lyric opera, was determined utilising the information collected from the analysis of irradiated DG solutions. Note de contenu : - MATERIALS AND METHODS : Chemicals - Photo-ageing in-solution experiment - Historical sample - Apparatus - RESULTS AND DISCUSSION : In-solution study : qualitative analysis - In-solution study : semi-quantitative analysis - Analysis of an historical textile sample DOI : https://doi.org/10.1111/cote.12538 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12538 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36489 [article]

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On the use of an internal mixer to study the impregnation of carbon fillers by organic liquids / Meral Akkoyun in APPLIED RHEOLOGY, Vol. 24, N° 1 (2014)

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Polyamic acid : nanoprecipitation and electrophoretic deposition on porous supports / Libor Brabec in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 3 (05/2018)  

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Property optimization of PAN-fibers based on improved air-gap spinning technology / Frank-Günter Niemz in CHEMICAL FIBERS INTERNATIONAL, Vol. 71, N° 4 (12/2021)  

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The synthesis, photophysical and thermal properties of new anthrapyrimidine colorants / Sreejit R. Menon in COLORATION TECHNOLOGY, Vol. 127, N° 6 (2011)

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