Interaction of polystyrene and fullerene C60 in benzene: Composition and molecular properties of the product

Yevlampieva, N. P.; Dmitrieva, T. S.; Melenevskaya, E. Yu.; Zaitseva, I. I.; Ryumtsev, E. I.

doi:10.1134/s0965545x0703008x

Cited by 10 publications

(8 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was found that the intrinsic viscosity of PA/C 60 decreases with increasing C 60 content. The decrease in ["] values of the polymerfullerene complexes was observed for polymers of different chemical nature, M w , various fullerene content, and in different solvents [7,13,14,34]. The higher the polymer M w , the more substantial decrease in the inherent size of polymer-fullerene complex takes place.…”

Section: Properties Of Pa/c 60 Solutionsmentioning

confidence: 99%

“…The static methods, which affect the solution structure very slightly, clearly indicate the existence of intermolecular associates [7,10,11]. Dynamic methods such as liquid chromatography, viscometry, sedimentation, and birefringence in flow characterize only individual macromolecules since intermolecular associates existing in solution are destructed by velocity gradients during the experiments [4,7,10,12,14,15]. The change in polymer properties after modification by fullerene was demonstrated very clearly in the cases of poly(vinylpyrrolidone) (PVP)/fullerene and polystyrene (PS)/fullerene complexes.…”

Section: Introductionmentioning

confidence: 99%

“…The degree of destruction increases with increasing polymer molecular weight (M w ) and deterioration of the solvent quality for fullerene C 60 [4]. Intrinsic viscosities of solutions of many polymer-fullerene complexes including polymers of different structure and M w were determined in various solvents [7,13,14]. The decrease in intrinsic viscosity of the complex as compared with that of pristine polymer was mainly observed in experiments with polymers having high M w .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Properties of casting solutions and ultrafiltration membranes based on fullerene-polyamide nanocomposites

Sudareva¹,

Penkova²,

Kostereva³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Poly(phenylene isophtalamide) (PA) was modified by fullerene C 60 using solid-phase method. Novel ultrafiltration membranes based on nanocomposites containing up to 10 wt% of fullerene and carbon black were prepared. Properties of PA/C 60 composites in solutions were studied by light scattering and rheological methods. The relationship between characteristics of casting solutions and properties of nanocomposite membranes was studied. Scanning electron microscopy was used for structural characterization of the membranes. It was found that increase in fullerene content in nanocomposite enhances the membrane rigidity. All nanocomposite membranes were tested in dynamic (ultrafiltration) and static sorption experiments using a solution of protein mixture, with the purpose of studying protein sorption. The membranes modified by fullerene demonstrate the best values of flux reduced recovery after contact with protein solution. It was found that addition of fullerene C 60 to the polymer improves technological parameters of the obtained composite membranes.

show abstract

Section: Properties Of Pa/c 60 Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Properties of casting solutions and ultrafiltration membranes based on fullerene-polyamide nanocomposites

Sudareva¹,

Penkova²,

Kostereva³

et al. 2012

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…At present, there are publications devoted to func tionalization of synthetic polymers with fullerene by various methods [7][8][9]. Among other polymers, poly styrene is of interest, since it, being an electron donor polymer macromolecule, forms a noncovalent link with an electron acceptor molecule of C 60 during its functionalization with fullerene in solutions of aro matic hydrocarbons [8].…”

Section: Interactionmentioning

confidence: 99%

“…Among other polymers, poly styrene is of interest, since it, being an electron donor polymer macromolecule, forms a noncovalent link with an electron acceptor molecule of C 60 during its functionalization with fullerene in solutions of aro matic hydrocarbons [8]. The modification of polysty rene with fullerene may be suggested to lead to an increase in the specific surface of the produced films and to an enhancement in the sorption activity of the composites.…”

Section: Interactionmentioning

confidence: 99%

Sorption properties of fullerene-modified polystyrene

Bagrovskaya

Алексеева

2012

Prot Met Phys Chem Surf

View full text Add to dashboard Cite

INTERACTIONFullerene/polymer composites are promising materials for various fields of industry, medicine, and pharmacology. This is owing to the fact that modifica tion of polymers with carbon nanoparticles improves their physicochemical properties, such as conductive, optical, mechanical, and catalytic characteristics, and promotes the occurrence of new properties, e.g., bio logical activity [1].Various forms of fullerene (C 60 , C 70 , fullerene nan otubes, fullerene soot) exhibit adsorption activity to organic solvents [2, 3] and metal ions [4]. This prop erty of nanoparticles is used in modification of the sur face of inorganic materials with the purpose of increasing their surface activity [5,6].At present, there are publications devoted to func tionalization of synthetic polymers with fullerene by various methods [7][8][9]. Among other polymers, poly styrene is of interest, since it, being an electron donor polymer macromolecule, forms a noncovalent link with an electron acceptor molecule of C 60 during its functionalization with fullerene in solutions of aro matic hydrocarbons [8]. The modification of polysty rene with fullerene may be suggested to lead to an increase in the specific surface of the produced films and to an enhancement in the sorption activity of the composites. Moreover, styrene/divinylbenzene copol ymers are raw materials for commercial manufactur ing cationites and the development of sorbent based on polystyrene modified with carbon nanoclusters may allow significant extension of the choice of sor bents. For quantitative assessment of how the proper ties of the polymer surface alter after modification, its adsorption characteristics can be used.In this connection, the purpose of the present work is to investigate the effect of modification of polysty rene with fullerene on its sorption properties with respect to heavy metal ions. EXPERIMENTALAs an object in this work, we selected atactic poly styrene with М 1 × 10 5 . Fullerene, C 60 , containing 95.5% of the main material was purchased from Fullerene Technologies, St. Petersburg. The modifi cation of polystyrene with carbon nanoparticles was performed in the following way: the weighed samples of polymer and fullerene (C 60 ) were separately dis solved in o xylene; then, their solutions were mixed in needed proportions. The fraction of C 60 in the com posite was varied from 0.01 to 0.1 wt %. The films were obtained by spreading a polymer solution over a glass substrate and holding it until complete evaporation of the solvent. The films obtained were transparent 70 µm in thickness and had a sufficient mechanical strength. The modified polystyrene film was of light violet color, whose intensity depended on the concen tration of fullerene in the composite. The sorption properties of polystyrene and modified polystyrene films with respect to Cu(II), Ni(II), Zn(II), and Cd(II) were studied under the static mode at 293 K. The kinetics of sorption of heavy metal ions from aqueous solutions of their sulfates on the initial and modified polystyre...

show abstract

Polymeric nanocomposites containing non-covalently bonded fullerene C60: properties and applications

Бадамшина

Gafurova

2012

J. Mater. Chem.

View full text Add to dashboard Cite

show abstract

Interaction of polystyrene and fullerene C60 in benzene: Composition and molecular properties of the product

Cited by 10 publications

References 2 publications

Properties of casting solutions and ultrafiltration membranes based on fullerene-polyamide nanocomposites

Properties of casting solutions and ultrafiltration membranes based on fullerene-polyamide nanocomposites

Sorption properties of fullerene-modified polystyrene

Polymeric nanocomposites containing non-covalently bonded fullerene C60: properties and applications

Contact Info

Product

Resources

About