Elaboration and study of poly(vinylidene fluoride)–anatase TiO2 composite membranes in photocatalytic degradation of dyes

Alaoui, Ouafa Tahiri; Nguyen, Quang Trong; Mbareck, Chamekh; Rhlalou, Touria

doi:10.1016/j.apcata.2009.01.032

Cited by 90 publications

(22 citation statements)

References 19 publications

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“…The fascinating inorganic semiconductor titanium dioxide (TiO 2 ) has emerged as an excellent photocatalytic material because of its high photocatalytic activity, abundant resource, photostability, biological and chemical inertness, and nontoxicity [9]. Nanocomposites based on TiO 2 and polymers have been widely researched for the purpose of antibacterial application [10–14], degradation of organic pollutants [15–19], disposal of plastic waste [20–23], etc. However, few studies on PLA/TiO 2 nanocomposites have been reported.…”

Section: Introductionmentioning

confidence: 99%

Poly(lactic acid)/titanium dioxide nanocomposite films: Influence of processing procedure on dispersion of titanium dioxide and photocatalytic activity

et al. 2011

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Poly(lactic acid)/titanium dioxide (TiO2) composite films were prepared by direct melt processing using three different procedures (i.e., compression molding, twin‐screw melt extrusion, and melt extrusion and thermoforming). The effect of TiO2 loading and processing procedures on the phase morphology and on the thermal, mechanical, and barrier properties of the obtained nanocomposites were analyzed respectively by field‐emission scanning electron microscopy‐energy dispersive spectrometry, differential scanning calorimetry, universal testing machine, and water vapor and oxygen permeability measurements. The incorporation of TiO2 nanoparticles into the poly(lactic acid) matrix increased the crystallinity and improved the barrier properties of the composites. The maximum tensile strength was achieved at the 2% content of TiO2 for the films produced by compression molding and twin‐screw melt extrusion, whereas the tensile strength for films produced by melt extrusion and thermoforming decreases markedly with an increasing TiO2 content. The photocatalytic activities of the obtained nanocomposites were investigated by analyzing the degradation of methyl orange. Results confirmed that the processing procedures and the distribution of TiO2 in the polymer matrix are the key parameters, which rule the photocatalytic behavior of composite films. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Poly(lactic acid)/titanium dioxide nanocomposite films: Influence of processing procedure on dispersion of titanium dioxide and photocatalytic activity

et al. 2011

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“…In a work done by Alaoui and coworkers[139], a TiO 2 /PVDF microporous membranes revealed higher adsorption capacity in degradation of Brilliant Green than for Indigo Carmin dyes in aqueous solutions. Similar results were obtained by Nawi et al…”

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confidence: 98%

TiO2 nanocomposite based polymeric membranes: A review on performance improvement for various applications in chemical engineering processes

Bet-Moushoul

Mansourpanah

Farhadi

et al. 2016

Chemical Engineering Journal

344

130

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“…The incorporation of inorganic particles of nanometer-sized within the PLA matrix represents a valuable and widely studied solution to improve several practical properties [43]. Nanocomposites based on TiO2 and polymers have been widely investigated for purposes such as antibacterial application, degradation of organic pollutants, disposal of plastic waste [44][45][46][47][48][49], etc. However, few studies on PLA/TiO2 nanocomposites have been reported.…”

Section: Introductionmentioning

confidence: 99%

Use of Chemically Modified Titanium Dioxide Particles to Mediate the Non-isothermal Cold Crystallization of Poly(latic acid)

et al. 2020

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In this work, the effect of the chemical modification of titanium dioxide particles on the non-isothermal crystallization process of polylactic acid (PLA) was studied. Cold crystallization in some polymers occurs above the glass transition temperature (Tg) when the polymer chains gain sufficient mobility to organize themselves into the ordered structure (i.e. the crystal structure) by folding the chains. Cold crystallization in general is caused by the ordering of the molecular chains in the crystalline PLA due to the increased mobility during heating. Through an analysis of the cool crystallization process in DSC at different cooling rates, it was observed that the behavior of PLA and its composites made with titanium dioxide, neat and functionalized with dicarboxylic acids, can be described through the models used for crystallization of the polymer carrying out during cooling, such as Mo’s and Jeziorny’s model. In addition, it was determined that the chemical modification of TiO2 performed with silane increases the crystallization rate in the last step of the process; while the chemical modification with dicarboxylic acid has an accelerated effect on the crystal formation process attributed to the affinity between the aliphatic part of this group and the polymer chains. Also, it was shown that the inclusion of the silanized particles has no effect on the energy requirement compared to the pure PLA process; however, the addition of particles with the dicarboxylic acid decreases the energy value required to complete the crystalline state due to affinity at the surface to immobilize the polymer chains. Finally, it is emphasized that the activation energy required to perform the crystallization of PLA and its composites has positive values, which is an indicator that the crystallization was performed while heating, after reaching and passing the glass transition temperature and before melting.

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Elaboration and study of poly(vinylidene fluoride)–anatase TiO2 composite membranes in photocatalytic degradation of dyes

Cited by 90 publications

References 19 publications

Poly(lactic acid)/titanium dioxide nanocomposite films: Influence of processing procedure on dispersion of titanium dioxide and photocatalytic activity

Poly(lactic acid)/titanium dioxide nanocomposite films: Influence of processing procedure on dispersion of titanium dioxide and photocatalytic activity

TiO2 nanocomposite based polymeric membranes: A review on performance improvement for various applications in chemical engineering processes

Use of Chemically Modified Titanium Dioxide Particles to Mediate the Non-isothermal Cold Crystallization of Poly(latic acid)

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