Synthesis and evaluation of novel anionic polymeric surfactants based on polybenzoxazines

Mahfud, Riyad; Agag, Tarek; Ishida, Hatsuo; Shaikh, Sohel; Qutubuddin, Syed

doi:10.1016/j.jcis.2013.06.042

Cited by 36 publications

(19 citation statements)

References 51 publications

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“…3 This method has been generalized and studied because of its simplicity and diversity of substituents on both phenol and amine. For example, nitro 35 , halogenic 36 , cyano 37 , aldehyde 38 , carboxyl 39 , alkenyl 40 , maleimide 41 groups etc. can be adopted onto benzoxazine by using functional phenols/amines leading to produce a large variety of functional benzoxazines.…”

Section: O N L I N E F I R S T Scheme 2 Possible Path Ways For the Bmentioning

confidence: 99%

3,4-Dihydro-2H-1,3-benzoxazines and their oxo-derivatives - Chemistry and bioactivities

Eldin

2021

JSCS

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It must be stressed that the manuscript still has to be subjected to copyediting, typesetting, English grammar and syntax corrections, professional editing and authors' review of the galley proof before it is published in its final form. Please note that during these publishing processes, many errors may emerge which could affect the final content of the manuscript and all legal disclaimers applied according to the policies of the Journal.

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Section: O N L I N E F I R S T Scheme 2 Possible Path Ways For the Bmentioning

confidence: 99%

3,4-Dihydro-2H-1,3-benzoxazines and their oxo-derivatives - Chemistry and bioactivities

Eldin

2021

JSCS

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“…Все амфифильные полимеры были охарактеризованы методами ЯМР-спектроскопии и ГПХ. При помощи 1 Ни количественной 13 С-ЯМР-спектроскопии характери-зовали степень замещения свободных гидроксильных групп (табл. 2).…”

Section: результаты и их обсуждениеunclassified

“…Такие соединения могут быть компонентами лекарственных форм, сочетающих в себе высокую физиологическую активность и ярко выраженные транспортные свойства. В качестве примера может служить ряд промышленно важных поверхностно-активных веществ, содержащих гетероциклические фрагменты и проявляющих бактерицидную и антимикробную активность [8][9][10][11][12][13]. Помимо медицинской промышленности, которая является основным потребителем биологически активных поверхностно-активных веществ, эти соединения могут быть использованы в ветеринарии и сельском хозяйстве.…”

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Novel polymer surfactants based on the branched silatrane-containing polyesters and polyethers

et al. 2019

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Objectives. Biologically active polymeric surfactants are a new promising class of macromolecules that can find application in medicine, cosmetology, and agriculture. In this study, a number of new biologically active amphiphilic polymers based on branched silatrane-containing polyesters and polyethers were obtained, and their surface-active properties were investigated.Methods. The branched polymers were represented by polyethers and polyesters, obtained respectively via the anionic polymerization of 1,2-epoxypropanol or a combination of equilibrium polycondensation and ring opening polymerization. The polymers were modified with 3-isocyanopropylsilatrane and trimethylethoxysilane to obtain the amphiphilic compounds containing silatrane groups bonded to the polymer backbone by the urethane bond. The structure of the synthesized polymer silatranes was confirmed via nuclear magnetic resonance spectroscopy and gel permeation chromatography. The surface active properties of all the copolymers obtained were investigated in connection with their obvious amphiphilicity. In particular, the formation of micelles in aqueous solutions is such a property. The critical micelle concentrations were determined by a method of quenching the fluorescence of the polymers.Results. It was shown that the values of the critical micelle concentrations and the hydrophilic-lipophilic balance values of polymers determined by the Griffin equation correlate well with each other. A linear relationship between the hydrophilic-lipophilic balance and the critical micelle concentrations was established. At the same time, polyether-based polymers generally showed higher critical micelle concentrations than polyester-based polymers, although the hydrophilic-lipophilic balance values for polymers of different series, but with close degrees of substitution, were close. It was found that the use of all synthesized polymers as stabilizers of direct and reverse emulsions leads to an increase in the aggregative stability of both types of emulsions. The stability of emulsions depended both on the degree of substitution of peripheral hydroxyl groups of polymers by silatranes and on the molecular weight and structure of the branched block of polymers. The stability of direct emulsions increased for all polymers, while that of inverse emulsions decreased with an increasing degree of substitution of hydroxyl groups by silatranes. The increase of the branched block molecular weight led to an increase of droplet sizes for both direct and inverse emulsions. The smallest droplet size for direct and inverse emulsions was obtained using polymers with low molecular weight branched polyester blocks as surfactants.Conclusions. The results obtained prove the possibility of creating polymer surfactants containing silatrane groups. By varying the structure of the polymer, its molecular weight and the degree of substitution of peripheral functional groups, it is possible to obtain surfactants with desired surface properties.

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“…Overall, through our study of foam properties, Scheme 4. Synthesis of surface active agents (22)(23)(24)(25)(26). Table 1 Reaction conditions of propoxylated compounds.…”

Section: Surface and Interfacial Tensionmentioning

confidence: 99%

Synthesis, Surface, and Antimicrobial Activity of Hydrophobically Thiadiazole, Pyridazine, and Pyrimidine Systems Based on Surface Active Agents

Althagafi

El‐Sayed

2018

Journal of Heterocyclic Chem

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A series of hydrophobically thiadiazole, pyridazine, and pyrimidine were synthesized with surface and biological activities from cheap, available, and safe raw materials such as fatty acids. Thus, diazotizations of thiadiazole derivative 2 and malononitrile resulted a hydrazone derivative 3, which was used to construct various biologically active compounds with low toxicity, good solubility and biodegradation, surface properties with biological activity. The results revealed that these substances have the ability to reduce the surface tension, reduce the wetting time, varying degrees of foam and emulsifying stability, which makes use in the different industries. As well as their biodegradability, which confirms that these compounds are environmentally friendly to humans and the environment. Furthermore, the effect of these compounds against certain microorganisms has been studied and shown to be highly effective against the activity of these organisms.

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Synthesis and evaluation of novel anionic polymeric surfactants based on polybenzoxazines

Cited by 36 publications

References 51 publications

3,4-Dihydro-2H-1,3-benzoxazines and their oxo-derivatives - Chemistry and bioactivities

3,4-Dihydro-2H-1,3-benzoxazines and their oxo-derivatives - Chemistry and bioactivities

Novel polymer surfactants based on the branched silatrane-containing polyesters and polyethers

Synthesis, Surface, and Antimicrobial Activity of Hydrophobically Thiadiazole, Pyridazine, and Pyrimidine Systems Based on Surface Active Agents

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