Alternative methods for transferring mosquito repellent capsules containing bio-based citronella oil to upholstery fabrics: coating and printing / Merih Sariisik in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 1 (01/2022) . - p. 323–336 Titre : Alternative methods for transferring mosquito repellent capsules containing bio-based citronella oil to upholstery fabrics: coating and printing Type de document : texte imprimé Auteurs : Merih Sariisik, Auteur ; Gülsah Ekin kartal, Auteur ; Gökhan Erkan, Auteur ; Sadi Etkeser, Auteur Année de publication : 2022 Article en page(s) : p. 323–336 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Ameublement Citronnelle Coacervation La coacervation est un phénomène colloïdal qui implique la diminution de solubilté d'un polymère dans un solvant par addition de quantité importante de différents composés : un alcool, un deuxième polymère plus soluble ou un sel (sulfate de sodium). Les molécules de polymère qui sont désolvatées coalescent et forment des gouttelettes, dites gouttelettes de coacervat. Si la coacervation se fait dans un milieu ou il y a deux phases, les gouttelettes de coacervat se regroupent à l'interface créant ainsi une membrane. Il suffit alors de durcir la membrane, de la rendre plus résistante par des réactions de crosslinking entre les molécules de polymère. Coacervation simple : La coacervation est déclenchée par addition d'un alcool concantré, par exemple de l'éthanol à 50% ou du sulfate de sodium Coacervation complexe : La coacervation complexe repose sur le même principe que la coacervation simple excepté que : le polymère en solution dans la phase continue est un polymère chargé, un deuxième polymère est utilisé pour modifier le solubilité du premier. Ce deuxième polymère porte une charge opposée à celle du premier. Encapsulation Enduction textile Ethylcellulose Insecticides Matériaux -- Imprégnation Microcapsules Morphologie (matériaux) Moustiques Textiles et tissus Index. décimale : 667.9 Revêtements et enduits Résumé : The aim of this study was to prepare insect repellent textiles and compare the application methods. Bio-based insect repellent agent citronella oil was encapsulated with ethyl cellulose shell with coacervation method. Morphological assessment showed that capsules had smooth surfaces and their shape was spherical. The homogenous size distribution of the capsules was supported and the mean particle size of the optimum formulations was almost 50 μm. Outdoor upholstery fabrics were treated with citronella capsules by coating and printing to compare the application methods. After application, the insecticide effects of the fabrics were investigated and compared with the impregnation method. Insecticide activity was evaluated against common house mosquitoes (Culex pipiens), with respect to cone bioassay of World Health Organization. Mosquitoes tended to stay away from treated fabrics, and mortality rates of mosquitos were noted as 72, 65 and 55% for printing, coating and impregnation, respectively, and the fabrics still showed repellency after five washing cycles. This study showed that the developed product might be used as an alternative to the other products in the market for avoiding mosquito-borne diseases and these results showed that capsules can be transferred by printing and coating processes when compared with the impregnation method. Note de contenu : - EXPERIMENTAL : Materials - Preparation of the microcapsules - Mass yield of microcapsule - Particle morphology of microcapsules - Particle size of microcapsules - Fourier transform infrared spectrophotometer (FTIR) analysis - Thermogravimetric analysis (TGA) - Application of the microcapsules to the outdoor upholstery fabrics - Evaluation of treated fabrics - RESULTS AND DISCUSSION : Mass yield of microcapsules - Particle morphology of microcapsules - Particle size of microcapsules - Fourier transform infrared spectrophotometer (FTIR) analysis - Thermogravimetric analysis (TGA) - Evaluation of treated fabrics - Table 1 : Capsule transfer prescription for printing method - Table 2 : Capsule transfer prescription for coating method - Table 3 : Capsule transfer prescription for impregnation method - Table 4 : Mass yield of microcapsules - Table 5 : SEM photomicrographs of outdoor upholstery fabrics treated with citronella capsules with no wash, after 5 washing cycles and after rubbing - Table 6 : The ion chromatogram of citronella oil and GC-MS diagrams of outdoor upholstery fabrics treated with citronella capsules with no wash and after 5 washing cycles - Table 7 : Citronella amount in the samples as a result of GC-MS analysis - Table 8 : m2 weight changes of samples before and after washing - Table 9 : Insect repellent effect results of samples - Table 10 : Dimensional change percentage for fabrics - Table 11 : Fastness test results of capsule-transferred fabrics containing citronella - Table 12 : Color measurements of fabrics DOI : https://doi.org/10.1007/s11998-021-00529-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00529-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37161 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23313	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Modifying of UHMWPE fishing nets with layer-by-layer deposition method for antifouling properties / Gülsah Ekin kartal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 1 (01/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 1 (01/2021) . - p. 163-171 Titre : Modifying of UHMWPE fishing nets with layer-by-layer deposition method for antifouling properties Type de document : texte imprimé Auteurs : Gülsah Ekin kartal, Auteur ; Ayse Merih Sarusik, Auteur Année de publication : 2021 Article en page(s) : p. 163-171 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Borate de zinc Caractérisation Cationisation Couches minces multicouches Filets de pêche Formation de film Nanoparticules Oxyde de cuivre Oxyde de zinc Polyéthylène à ultra haut poids moléculaire Polyéthylèneimine Revêtement monocouche Revêtements antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : The nanoparticles-based, multilayer, nanocomposite films ZnO, Cu2O, zinc borate, and Econea® were fabricated on cationized ultra-high molecular weight polyethylene (UHMWPE) fishing nets using a layer-by-layer molecular self-assembly technique. For the cationic surface charge, the UHMWPE fishing nets were pretreated with polyethyleneimine using the dip-coating method. Scanning electron microscopy and energy-dispersive X-ray spectroscopy were used to examine the nano-ZnO, Cu2O, zinc borate, and Econea® multilayer films deposited on the fishing nets. The fishing nets were placed in a fish farm located in the Aegean Sea for 6 months. The nano-Econea® films exhibited excellent antifouling activity against microorganisms. To evaluate the effect of the process on antifouling properties, physical tests of the nets were conducted before and after the nanoparticle treatment. The strength of the nets and fouling organisms were examined after the field study. Note de contenu : - EXPERIMENTAL : Materials - Cationization process - Nano-multilayer film formation - Characterization - RESULTS AND DISCUSSION : Characterization - Fieldwork - Macro-organisms analysis - Solidity of nets - Strength and weight analysis - Table 1 : Percentage of elemental contents of fishing nets deposited with 16-multilayer nanomaterial films - Table 2 : Solidity of biofouled fishing nets - Table 3 : Weighting results of fishing nets deposited with 16-multilayer nanomaterial films before and after the field - Table 4 : Strength and elongation values of fishing nets deposited with 16-multilayer nanomaterial films DOI : https://doi.org/10.1007/s11998-020-00392-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00392-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35360 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
22605	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The effect of liposome on dyeing mohair/wool blends / Gülsah Ekin kartal in COLORATION TECHNOLOGY, Vol. 136, N° 2 (04/2020)

[article]  inCOLORATION TECHNOLOGY > Vol. 136, N° 2 (04/2020) . - p. 136-167 Titre : The effect of liposome on dyeing mohair/wool blends Type de document : texte imprimé Auteurs : Gülsah Ekin kartal, Auteur ; Berrak Buket Avci, Auteur ; Gokhan Erkhan, Auteur ; Merih Sariisik, Auteur Année de publication : 2020 Article en page(s) : p. 136-167 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cholestérol Encapsulation Fibres textiles -- Propriétés mécaniques Laine Lécithine La phosphatidylcholine est plus connue sous le nom lécithine. Au sens le plus strict, la lécithine désigne uniquement les phosphatidylcholines c'est-à-dire un lipide formé à partir d'une choline, d'un phosphate, d'un glycérol et de deux acides gras (figure). Dans ce contexte, il serait plus juste de parler des lécithines, car il ne s'agit pas d'une seule molécule mais d'un groupe dont la composition en acide gras varie d'une molécule à l'autre. Ainsi, les lécithines vont adopter diverses couleurs selon leur composition : du jaune, pour la lécithine végétale, au brun, pour la lécithine de poisson. Le terme de lécithine est aussi utilisé par extension pour désigner l'ensemble des phospholipides extraits du vivant (par exemple le soja), dans la mesure où ils sont majoritairement constitués de phosphatidylcholine. Liposomes Mohair Photostabilité Résistance au lavage Soja et constituants Teinture -- Fibres textiles Index. décimale : 667.3 Teinture et impression des tissus Résumé : The aim of this study was to examine the use of liposome in the dyeing of wool and mohair fibres with acid dyestuffs. Soybean lecithin and cholesterol were used to form the liposome membrane utilised in the dyebath. Liposome production was performed according to the thin lipid layer method (Bangham Method) using a rotary evaporator. Two different forms of liposome were used for dyeing wool and mohair fibres. In its first form, liposome was utilised as an auxiliary agent, where it was added to a conventional dyebath at the beginning of the process. In its second form, dyes were encapsulated with liposome and then used in dyeing. The effects of these two different forms of liposome were compared with conventional dyeing. Dyeing was carried out at depths of shade of 0.5%, 1.0% and 2.0% using three different concentrations of liposome (0.33%, 0.66% and 1.33%). An analysis of K/S values, fastness to washing, and the alkali solubility of fibres was conducted. The fibre samples dyed in the presence of liposome exhibited very good fastness to light (grade 8). The wash fastness test results of the liposomal-dyed samples were significantly better (grade 4-5) than for those samples which were conventionally dyed. In the presence of liposome, the tensile strength of fibres was 20 gf, whereas it was 11 gf without liposomes. DOI : https://doi.org/10.1111/cote.12461 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34236 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21751	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 3 / 3)