Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Yehya Youssef"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract This research aimed to weave the warp indigo-dyed cotton yarn with un-dyed or dyed silk yarn and analyze the impact of different weft yarn structures on the properties of denim fabrics. The dyed silk yarn was performed by a selection of diff
Externí odkaz:
https://doaj.org/article/3977dce803f745698040b19dbbcae594
Autor:
Tarek Aysha, Mervat El-Sedik, Saadia Abd El Megied, Hassan Ibrahim, Yehya Youssef, Radim Hrdina
Publikováno v:
Arabian Journal of Chemistry, Vol 12, Iss 2, Pp 225-235 (2019)
New solid state hydrazone fluorescent reactive disperse dyes based on pyrrolinone ester and temporarily anionic sulfatoethylsulfone moiety were prepared. The NMR of all prepared dyes was studied in details; these dyes were observed only in pure hydra
Externí odkaz:
https://doaj.org/article/cde658589d4043ea8854e98cb99b6776
Publikováno v:
Heliyon, Vol 5, Iss 8, Pp e02358- (2019)
A new series of solid state fluorescent disperse dyes based on hybrid structure of pyrrolinone ester (PES)/coumarin moiety was prepared and fully characterized using spectroscopic analysis such as 1HNMR, MS and IR spectra. The coumarin derivative (7-
Externí odkaz:
https://doaj.org/article/89af981935424b539158f9da80593364
Publikováno v:
Coloration Technology. 137:668-677
Publikováno v:
SSRN Electronic Journal.
Publikováno v:
Egyptian Journal of Chemistry.
Conventional pretreatment and dyeing processes of viscose fabric are mainly conducted in two baths with substantial amounts of water and auxiliaries. These processes comprise one bath of two–stages for enzymatic de-sizing and alkaline treatment ado
Autor:
Mervat El-Sedik, Saadia Abd El Megied, Radim Hrdina, Tarek Aysha, Yehya Youssef, Hassan M. Ibrahim
Publikováno v:
Arabian Journal of Chemistry, Vol 12, Iss 2, Pp 225-235 (2019)
New solid state hydrazone fluorescent reactive disperse dyes based on pyrrolinone ester and temporarily anionic sulfatoethylsulfone moiety were prepared. The NMR of all prepared dyes was studied in details; these dyes were observed only in pure hydra
Publikováno v:
Journal of Molecular Structure. 1249:131623
Six novel fluorescent disperse dyes were synthesized by diazo-coupling reaction. As dye intermediates, two diazo components having 5-amino-4-arylazo-3-methyl-1H-pyrazoles moieties were initially prepared, diazotized and coupled with three pyrrolinone
Publikováno v:
Dyes and Pigments. 196:109795
New colorimetric chemosensor(Ethyl(E)-4-(2-(3-methyl-4-((E)-phenyldiazenyl)-1H-pyrazol-5-yl)hydrazono)-5-oxo-2-phenyl-4.5-dihydro-1H-pyrrole-3-carboxylate) (APHPES) was synthesized. This compound mainly based on a hybrid hydrazo/azo dye chromophoric
Publikováno v:
Coloration Technology. 134:126-134