Synthesis, surface and thermodynamic parameters of some biodegradable nonionic surfactants derived from tannic acid

Sayed, G. H.; Ghuiba, F.M.; Abdou, M.I.; Badr, Emad A.; Tawfik, Salah M.; Negm, Nabel A.

doi:10.1016/j.colsurfa.2011.11.006

Cited by 60 publications

(18 citation statements)

References 15 publications

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“…The products were filtered off and recrystallized twice from ethanol to obtain the crystalline products of the desired metal complexes (C12QSn, C12QZn, C12QCo, C16QSn, C16QZn, and C16QCo) [37,38] (Scheme 1). [39,40].…”

Section: Synthesis Of Cationic Surfactants Metal Complexesmentioning

confidence: 98%

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Tawfik

Zaky

2014

Res Chem Intermed

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Two-membered cationic surfactants namely: N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl)dodecane ammonium bromide (C12Q) and N,Nbis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]hexadecane ammonium bromide (C16Q) and their cobalt, tin and zinc complexes (C12QCo, C12QSn, C12QZn, C16QCo, C16QSn and C16QZn) were synthesized. The chemical structures of the synthesized compounds were confirmed using different spectroscopy tools. The surface activities of the synthesized surfactants were influenced by their chemical structures and the type of the transition metals. The synthesized cationic surfactants and their metal complexes were evaluated as biocides against Gram-positive bacteria (Bacillus subtilis and Micrococcus luteus), Gram-negative bacteria (Bordetella pertussis and Escherichia coli) and fungi (Candida albicans and Aspergillus niger), while the sulfate-reducing bacteria were tested against Desulfomonas pigra. The biological activity results showed that the cationic surfactants exhibit moderate to high efficiency against the tested microorganisms. The antimicrobial activity was strongly increased by complexation of these cationic surfactants with Co(II), Sn(II) and Zn(II) ions. The antimicrobial activity of the synthesized compounds against sulfate-reducing bacteria showed promising results in the field of biocides application.

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Section: Synthesis Of Cationic Surfactants Metal Complexesmentioning

confidence: 98%

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Tawfik

Zaky

2014

Res Chem Intermed

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“…The time required for separation of 9 mL of pure surfactant solution was expressed as emulsion stability [21].…”

Section: Emulsion Stabilitymentioning

confidence: 99%

Synthesis, surface, biological activity and mixed micellar phase properties of some biodegradable gemini cationic surfactants containing oxycarbonyl groups in the lipophilic part

Tawfik

2015

Journal of Industrial and Engineering Chemistry

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“…According to Flory's inflation theory, apposite WD-70 is so important to strengthen an elastomer with threedimensional network structure. However, higher dosage of cross-linking agent occupies the space of network structure for excessive crosslinking [16]. That's why the swelling capacity decreases sharply when the dosage exceeds 0.1 g. So, 0.1 g WD-70 here is appropriate for PLA-21.…”

Section: Effect Of Dosage Of Wd-70 On Swelling Timesmentioning

confidence: 99%

Synthesis and Mechanism of a Novel Organosilicone Used as a Selective Plugging Agent

Hou¹,

Li²,

Luo³

2015

JRST

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A novel selective blocking agent called PLA-21 was prepared by acrylamide (AM), Acrylic Acid (AA), diallyldimethylammonium chloride (DMDAAC) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) in aqueous solution with organosilicon(WD-70) as cross-linking agent. The optimal synthesis conditions were discussed detailedly. The experimental results showed that its water plugging rate was higher than 95% and plugging rate of oil was less than 10%, which demonstrated excellent selective plugging ability. Meanwhile, cores with different permeability can be blocked effectively. Compared with some common selective blocking agents, it was found that the PLA-21 satisfied engineering demand better and it was an effective selective blocking agent for oil filed application. FTIR and EDS show PLA-21 was synthesized successfully and it contains anion group, cationic groups, nonionic groups and silicon. SEM was used to research and analyze the mechanism of selective plugging. It indicates that PLA-21 can expand sharply in water and shirk in oil, which making it good selective blocking efficiency.

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Synthesis, surface and thermodynamic parameters of some biodegradable nonionic surfactants derived from tannic acid

Cited by 60 publications

References 15 publications

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Synthesis, surface, biological activity and mixed micellar phase properties of some biodegradable gemini cationic surfactants containing oxycarbonyl groups in the lipophilic part

Synthesis and Mechanism of a Novel Organosilicone Used as a Selective Plugging Agent

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