Synthesis and Characterization of Some Quaternized Styrene Monomers and Polymers

Galehassadi, Mohammad; Herizchi, Roya; Ranjbar, F.

doi:10.1163/138577211x577178

Cited by 7 publications

(2 citation statements)

References 20 publications

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“…[32,33] A third attractive strategy, by a continuous process, consists to synthesize, in situ, a block or graft copolymer at the interface between the immiscible polymers. [24,[34][35][36][37][38][39][40][41][42][43][44][45][46] Reactive extrusion can then be used with the advantage to combine simultaneously both the blending and the chemical reaction with short residence times. These reactions often happen between two functional groups located at the end of the polymer chains.…”

Section: Introductionmentioning

confidence: 99%

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Chevallier

Becquart

Majesté

et al. 2013

Designed Monomers and Polymers

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The reactions between polycarbonate (PC) and polystyrene-block-poly(ethylene-butylene)-block-polystyrene-graftedmaleic anhydride (SEBS-g-MAH) is a novel, convenient, solvent-free, and easy way to create SEBS-g-PC in order to compatibilize polystyrene and PC blends. This study determines the most efficient catalyst among Tin (II) bis(2-ethylhexanoate) (SnOct 2 ), 1,5,7-Triazabicyclo[4.4.0]dec-5-ene (TBD), Titanium tetrabutoxide (Ti(OBu) 4 ) and Sodium 4-hydroxybenzenesulfonate dihydrate (SHBS) in the molten state at 220°C. From 20 to 30 wt% of SEBS-g-MAH (or KFG) chains became insoluble. The size exclusion chromatography analyses showed the formation of a double distribution due to PC chains scission and grafting reactions onto SEBS-g-MAH with the exception of the Ti(BuO) 4 use. Fine microstructures with a percolation effect proved the efficiency of both the TBD and the SnOct 2 . The PC transition temperature decreased in at least 10°C, confirmed that only SnOct 2 and TBD were efficient to catalyze the grafting reactions. No evolution was observed with the SHBS and Ti(OBu) 4.

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Section: Introductionmentioning

confidence: 99%

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Chevallier

Becquart

Majesté

et al. 2013

Designed Monomers and Polymers

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“…4-(dimethylamino)-1-(4-vinylbenzyl) pyridinium hexafluorophosphate and homopolymers were prepared by the method described in the literature (Scheme 1) [17]. Acetonitrile, methanol, dichloromethane, tetrahydrofuran, N,N-dimethylamiono pyridine (DMAP), and 4-vinylbenzyl chloride were obtained from Merck.…”

Section: Experimental Materialsmentioning

confidence: 99%

Synthesis and characterization of ionic liquid functionalized polymers for drug delivery of an anti-inflammatory drug

Hosseinzadeh

Mahkam

Galehassadi

2012

Designed Monomers and Polymers

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Polymeric forms of ionic liquids have many potential applications because of their ionic nature. Two ionic liquid monomers, 1-(4-vinylbenzyl)-3-methyl imidazolium hexafluorophosphate (VMIH) and 1-(4-vinylbenzyl)-4-(dimethylamino)-pyridinium hexafluorophosphate (VDPH), were synthesized through the quaternization of N-methylimidazole and 4-(dimethylamino) pyridine with 4-vinylbenzylchloride, respectively, and a subsequent anion exchange reaction with potassium hexafluorophosphate. The homopolymers of VMIH, VDPH, and its copolymers with methyl styrene (in various mole ratios) were synthesized by free radical polymerizations at 70°C using α,α′-azobis(isobutyronitrile) as an initiator. Anionic drug molecule, naproxen (an anti-inflammatory drug), was effectively loaded into these positive charges polymers (PCP) and remained inside of the PCP under acidic environment (pH 2-6.5). The amount of loading of drug was increased with increasing positive charge densities resulting from the increasing number of ionic liquids groups. PCP as a controllable release of anionic drug molecules can be used as an oral delivery drug systems targeting at intestine. This drug can be remained trapped in the polymers when passing through the acidic and neutral environment and be released in intestine, where the environmental pH is close to basic.

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Synthesis and electrochemical studies of new styrenic poly(ionic liquid)s based on the 1-methyl-1,2,3-benzotriazolium cation

Jahed

Galehassadi

2018

Res Chem Intermed

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Synthesis and Characterization of Some Quaternized Styrene Monomers and Polymers

Cited by 7 publications

References 20 publications

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

Synthesis and characterization of ionic liquid functionalized polymers for drug delivery of an anti-inflammatory drug

Synthesis and electrochemical studies of new styrenic poly(ionic liquid)s based on the 1-methyl-1,2,3-benzotriazolium cation

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