Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Rasha A. El-Ghazawy"'
Publikováno v:
Journal of Chemistry, Vol 2015 (2015)
The present work has main target to study the effect of additives molecular weight and composition on the flow characteristics of wax crude oil at low temperature below pour point temperature. In this respect, maleic anhydride ester-co-vinyl acetate
Externí odkaz:
https://doaj.org/article/d62354f7844541a49c463d062faa13bf
Publikováno v:
Progress in Organic Coatings. 129:1-9
Blank epoxy coating (EC) and fumed silica epoxy composite coatings (SECCs) reinforced with different loading levels of nano- (7 nm) and micro (0.2-0.3 μm) silica were successfully prepared using ultrasonic technique. SEM analysis revealed a uniform
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3e5520c70b5eb0c30a9441a2d5666a63
https://doi.org/10.1016/j.porgcoat.2018.12.023
https://doi.org/10.1016/j.porgcoat.2018.12.023
Autor:
Ashraf M. El-Saeed, Abdul-Raheim M. Abdul-Raheim, Hussin I. Al-Shafey, Rasha A. El-Ghazawy, Maher A. El-Sockary
Publikováno v:
European Polymer Journal. 69:403-415
Ketone type derivative of rosin was prepared by dehydrocarboxylation of isomerized abietic acid. Coupling of dipimaryl ketone with maleic anhydride was performed by acetic acid catalyzed Diels–Alder reaction. Afterwards, the dipimaryl ketone was ep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::765e277fa2e9e8508c25f8d3eeb1f4b0
https://doi.org/10.1016/j.eurpolymj.2015.06.025
https://doi.org/10.1016/j.eurpolymj.2015.06.025
Publikováno v:
Journal of Petroleum Science and Engineering. 122:411-419
Polymeric flow improvers represent one of the most important chemicals used in oil industry especially with waxy crudes. The chemical structure of such chemicals is particularly important. In this study, we prepared a family of additives by chemical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::442d46c0912633e3b62a8cdb2f1e2c47
https://doi.org/10.1016/j.petrol.2014.07.040
https://doi.org/10.1016/j.petrol.2014.07.040
Autor:
Reem K. Farag, Mohamed A. Yossef, Rasha A. El-Ghazawy, Ezz-Din A. Abde-Halim, Wafia E. Toyor, Shymaa M. El-Saeed
Publikováno v:
Journal of Dispersion Science and Technology. 35:350-357
Linear and branched polyesters were prepared by transesterification of methyl recinoleate without or with diethylene glycol, trimethylol propane or pentaerithirtol for different durations. Molecular weight of the synthesized polyesters were determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50dbf8ba2b9cd6fe3b42eaf79c97ed2f
https://doi.org/10.1080/01932691.2013.788450
https://doi.org/10.1080/01932691.2013.788450
Publikováno v:
Journal of Dispersion Science and Technology. 34:1585-1596
Five comb-like copolymers derived from oleic acid-maleic anhydride were prepared and then esterified by long-chain fatty alcohol (POMA Cn), where n = 18, 20, 22. These polymers were characterized by FTIR and 1H NMR analysis. The molecular weight was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfb313cb9a66bd4392a6dc9c06dbab6b
https://doi.org/10.1080/01932691.2012.739857
https://doi.org/10.1080/01932691.2012.739857
Publikováno v:
Journal of Dispersion Science and Technology. 34:996-1007
In the present study, five types of water soluble demulsifiers based on linear alkyl benzene were prepared. The chemical structures of the prepared demulsifiers were elucidated using Fourier transform-infrared (FTIR) and 1H NMR spectra. Different fac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcde2dc1d003217f34998a9f498403eb
https://doi.org/10.1080/01932691.2012.695941
https://doi.org/10.1080/01932691.2012.695941
Autor:
Rasha A. El-Ghazawy, Abdul-Raheim M. Hasan, Jose M. Perez, Tea Datashvili, Witold Brostow, Ayman M. Atta, Haley E. Hagg Lobland
Publikováno v:
Polymer International. 62:116-126
In using recycled poly(ethylene terephthalate) (PET) as a petroleum sorbent we tried to achieve two important objectives simultaneously. PET waste was glycolized using trimethylolpropane (TMp) or pentaerytheritol (PEr) to produce suitable polyol olig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb8e678b652a17fbee835148a4dd4903
https://doi.org/10.1002/pi.4325
https://doi.org/10.1002/pi.4325
Publikováno v:
Egyptian Journal of Petroleum, Vol 20, Iss 2, Pp 67-77 (2011)
The present paper endeavors to synthesize nine types of demulsifiers based on bisphenols (bisphenol A (BA), bisphenol AC (BAC) and bisphenol CH (BCH)) having different ethylene oxide units ( n = 27, 34, 45) namely; E ( x + y ) (where E represents BA,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82b316ecebfd6e135c328eb7a0e44db4
http://www.sciencedirect.com/science/article/pii/S1110062111000092
http://www.sciencedirect.com/science/article/pii/S1110062111000092
Publikováno v:
Materials and Corrosion. 62:1015-1030
Linear and heavy alkyl benzene (HAB) were sulfonated with fuming sulfuric acid (oleum) and the sulfonated products were esterified with tri and poly ethanolamine (d = 4 and 6). The prepared three esters from each series were quaternized with n-butyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36860c385bbbf767f1cff9fc7cf915ff
https://doi.org/10.1002/maco.201006017
https://doi.org/10.1002/maco.201006017