Effect of titanium dioxide nanoparticles on polymer network formation

Bouadjela, S.; Abdoune, F.Z.; Benmoussa, N.; Méchernène, L.; Rahmoun, Khadidja; Maschke, Ulrich

doi:10.1080/00387010.2017.1378683

Cited by 12 publications

(5 citation statements)

References 19 publications

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“…Oxide nanoparticles are among the most commonly employed active nanofillers used for the enhancement of polymer properties. Nanoparticles have been proven to substantially alter various properties of materials, such as their mechanical, thermal, electrical, and transport properties [ 11 , 12 , 13 , 14 ]. Therefore, metal oxide nanoparticles are likely to have a profound effect on a number of cellulose functional properties.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Cellulose-Based Nanocomposites Containing Ceria and Their Use in the Process of Stem Cell Proliferation

et al. 2021

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A technique for the fabrication of bacterial cellulose-based films with CeO2 nanofiller has been developed. The structural and morphological characteristics of the materials have been studied, their thermal and mechanical properties in dry and swollen states having been determined. The preparation methodology makes it possible to obtain composites with a uniform distribution of nanoparticles. The catalytic effect of ceria, regarding the thermal oxidative destruction of cellulose, has been confirmed by TGA and DTA methods. An increase in CeO2 content led to an increase in the elastic modulus (a 1.27-fold increase caused by the introduction of 5 wt.% of the nanofiller into the polymer) and strength of the films. This effect is explained by the formation of additional links between polymer macro-chains via the nanoparticles’ surface. The materials fabricated were characterized by a limited ability to swell in water. Swelling caused a 20- to 30-fold reduction in the stiffness of the material, the mechanical properties of the films in a swollen state remaining germane to their practical use. The application of the composite films in cell engineering as substrates for the stem cells’ proliferation has been studied. The increase in CeO2 content in the films enhanced the proliferative activity of embryonic mouse stem cells. The cells cultured on the scaffold containing 5 wt.% of ceria demonstrated increased cell survival and migration activity. An analysis of gene expression confirmed improved cultivation conditions on CeO2-containing scaffolds.

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Section: Introductionmentioning

confidence: 99%

Bacterial Cellulose-Based Nanocomposites Containing Ceria and Their Use in the Process of Stem Cell Proliferation

et al. 2021

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“…Of a variety of nanofillers used to form nanocomposite materials, metal oxides have been popular, because they can improve the mechanical characteristics, and the electrical and transport properties, of the composites …”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7] Of a variety of nanofillers used to form nanocomposite materials, metal oxides have been popular, because they can improve the mechanical characteristics, and the electrical and transport properties, of the composites. [8][9][10][11][12] Cerium dioxide is a promising, but as yet poorly studied, metal oxide nanofiller. Polymer-based composite materials containing nanoceria are capable of screening electromagnetic irradiation, and they possess good catalytic activity and biological activity.…”

Section: Introductionmentioning

confidence: 99%

Unexpected selective enhancement of the thermal stability of aromatic polyimide materials by cerium dioxide nanoparticles

Gofman

Nikolaeva

Yakimansky

et al. 2019

Polymers for Advanced Techs

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The unusual effect of selective enhancement of the thermal stability of aromatic polyimide materials was established through the introduction of cerium dioxide nanoparticles into these polymers as nanofiller. Depending on the chemical structure of the polymers, a marked increase or a substantial decrease in the thermal stability of the nanocomposite material was registered by thermal analysis, as compared with that of unfilled polymer material. The positive effect was registered only for the composite materials based on the matrix polyimides containing the sulfur atoms located in the sulfonic groups arranged in the elementary units. The results of the thermogravimetric examination are compared with the data obtained during the mechanical tests of the same samples. The possible reasons for the alteration of the thermal stability of polymers by ceria nanoparticles are discussed. The effect above can be of substantial practical interest providing new options for the design of polyimide nanocomposite materials with enhanced thermal stability.

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“…A number of properties of matrix polymer materials can be substantially improved by the introduction of these nanoparticles, namely, the mechanical characteristics, electrical and transport properties, etc. [11][12][13][14]. Using metal oxide nanoparticles as an active filler of BC, one can obtain a deep variation the complex of the cellulosic material properties.…”

Section: Introductionmentioning

confidence: 99%

Impact of nano-sized cerium oxide on physico-mechanical characteristics and thermal properties of the bacterial cellulose films

Гофман¹,

Nikolaeva²,

Хрипунов³

et al. 2018

Nanosystems: Phys. Chem. Math.

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A set of nanocomposite film materials based on bacterial cellulose containing nanoparticles of cerium dioxide was prepared. An investigation into the structural and morphological characteristics of the films has been performed, their thermal, mechanical and tribological properties were determined. A protocol of the nanocomposite materials formation used in the work was shown to provide a homogeneous distribution of ceria nanoparticles in the matrix polymer volume in addition to the presence of certain amount of broadly size-dispersed cerium oxide aggregates in the bulk film. The increase of nanoparticles concentration in the composite provokes a progressive growth of the Young's modulus and strength of the film material. Introduction of nanoparticles into the polymer causes the stabilization of sliding friction processes in the tribocontact with steel as well as the decrease of intensity in the wear rate of the film. An increase of the nanoparticles concentration results in a decrease of the material thermal stability.

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Effect of titanium dioxide nanoparticles on polymer network formation

Cited by 12 publications

References 19 publications

Bacterial Cellulose-Based Nanocomposites Containing Ceria and Their Use in the Process of Stem Cell Proliferation

Bacterial Cellulose-Based Nanocomposites Containing Ceria and Their Use in the Process of Stem Cell Proliferation

Unexpected selective enhancement of the thermal stability of aromatic polyimide materials by cerium dioxide nanoparticles

Impact of nano-sized cerium oxide on physico-mechanical characteristics and thermal properties of the bacterial cellulose films

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