Bentonite filler effect on structure and properties of polystyrene-based composites

Алексеева, О. В.; Родионова, А. Н.; Bagrovskaya, N. A.; Носков, А. В.; Агафонов, А. В.

doi:10.1007/s13726-018-0683-9

Cited by 12 publications

(6 citation statements)

References 30 publications

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“…Similar regularities can be seen in the results of B. Pilica et al [68], which indicates that the presence of a small amount of about 1% by weight of silica in the polymer is characterized by good and uniform dispersion. However, the confirmation of appropriate dispersion for composites filled with bentonite in an amount of up to 3% by weight was found elsewhere [69]. The observations confirm well-selected conditions for the homogenization of the ingredients.…”

Section: Resultssupporting

confidence: 68%

The Influence of Selected Fillers on the Functional Properties of Polycarbonate Dedicated to 3D Printing Applications

Bulanda,

Oleksy,

Oliwa

2024

Polymers

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Additive manufacturing is still the fastest-developing technology in the modern world. Three-dimensional printing has become popular due to the method’s numerous advantages, such as its short time and low cost, compared to conventional methods such as injection molding. Therefore, the demand for new materials and material systems that will be characterized by the desired functional properties is clearly growing. As part of this work, work was carried out on the development and preparation of new polymer composites dedicated to 3D printing applications, especially in FDM/FFF/MEM technologies. The influence of the content and amount of fillers, such as silica modified with alumina (S) and bentonite modified with a quaternary ammonium salt (B), on the functional properties of a commercially available fiber made of traditional plastic, such as polycarbonate, obtained in the form of a filament (PCF), was determined. It was found that the addition of B significantly increased the fluidity of the polymer, the introduction of a filler in the amount of 1.5% allowed to obtain a result that was 6% higher compared to PCF (16.8 g/10 min), while the amount of 3% was 20% higher. The obtained mass melt flow rate (MFR) results were confirmed by determining the viscosity of the produced polymer composites. Satisfactory results of mechanical properties were obtained, including the following: it was found that the introduced modified fillers increased the elasticity of the material. The introduction of modified silica resulted in a reduction in Young’s modulus by 10.02% at the content of 0.5% S and at 1% S by 8.64% compared to the polymer. The introduced modified filler S significantly increased the thermostability of polycarbonate (T5% equal to 449 °C) by 23 °C for PCF/0.5% S and 14 °C for PCF/1% S, respectively. The SEM and WAXS results confirmed the appropriate dispersion of the fillers in the polymer matrix, which indicates well-selected conditions for the homogenization process of the components and the subsequent production of samples. Detailed characterization of the influence of selected fillers on the functional properties of the polymer matrix-polycarbonate allowed for an increase in the range of polymer composites and their use in rapid prototyping technologies, as well as supplementing the literature on databases regarding the characteristics of the obtained materials.

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Section: Resultssupporting

confidence: 68%

The Influence of Selected Fillers on the Functional Properties of Polycarbonate Dedicated to 3D Printing Applications

Bulanda,

Oleksy,

Oliwa

2024

Polymers

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“…Because of its antifouling ability, hydrophilicity, and high stability, TiO 2 nanomaterial is commonly active in membrane manufacturing ( Alzahrani and Mohammad, 2014 ; Zhao et al, 2015 ). Also, Clays have attracted special attention among the numerous inorganic fillers because of their compatible distribution in the polymer matrix, high surface area, economic, non-toxicity, and natural accessibility ( Alekseeva et al, 2019a ; Alekseeva et al, 2019b ). In our work cellulose acetate, ultrafiltration membrane was prepared and modified with nanoTiO 2 and nano-clay, to enhance protein removal from drug and food industry wastewater.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of bovine serum albumin from water by cellulose acetate membranes modified with clay and titania nano particles

et al. 2023

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Modified cellulose acetate membranes with bentonite clay (CA/bent) and TiO2 nanoparticles (CA/TiO2) using the phase inversion method are successfully prepared and characterized. These Membranes are favored due to their high salt rejection properties and recyclability. The IR and EDX spectral data indicate the formation of modified membranes. The Scan Electron Microscope micrographs show that the modified membranes have smaller particle sizes with higher porosity than the neat membrane. The average pore diameter is 0.31 µm for neat cellulose acetate membrane (CA) and decreases to 0.1 µm for CA/0.05bent. All modified membranes exhibit tensile strengths and elongation percentages more than the neat membrane. The higher tensile strength and the maximum elongation% are 15.3 N/cm2 and 11.78%, respectively, for CA/0.05bent. The thermogravimetric analysis of modified membranes shows higher thermal stability than the neat membrane. The modified membranes exhibit enhanced wettability and hydrophilicity compared with cellulose acetate, by measuring the contact angle which decreases from 60° (CA) to 40° (CA/0.1bent). The ultrafiltration tests indicated that the CA/bent and CA/TiO2 are better than CA. The most efficient nanocomposite membrane is CA/0.05bent with 100% removal of (BSA) from industrial water with a flux equal to 9.5 mL/min under an applied pressure of 20 bar. Thus, this study introduces a novel ultrafiltration membrane (CA/0.05bent) that can be used effectively to completely remove bovine serum albumin from contaminated water.

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“…Nowadays, the modification of bentonite by natural or synthetic polymers has gained critical research attention, such as polyethylene glycol, polystyrene, polysiloxane, carboxymethyl cellulose, chitin, and chitosan. − The preparation methods of polymer/bentonite composites can be classified into three categories: (i) intercalation polymerization, (ii) polymer intercalation by the melt method, and (iii) polymer intercalation by the solution method . A competitive advantage of the solution method is that it can better control the homogeneity of the constituents compared to the first two methods, which is helpful to comprehend the intercalation process and composites’ morphology.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Hexavalent Chromium from Aqueous Solution by a Chitosan/Bentonite Composite: Isotherm, Kinetics, and Thermodynamics Studies

2020

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In this work, the chitosan/bentonite composite was favorably prepared and further used for Cr(VI) removal from aqueous solutions via a batch adsorption process. The characteristics of the chitosan/bentonite composite were determined by using scanning electron microscopy, Brunner–Emmet–Teller measurement, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction, and the results reveal the evidence of the interaction between functional groups of chitosan with bentonite, which is helpful for the adsorption of Cr(VI). The adsorption performance of the chitosan/bentonite composite is better than that of chitosan or bentonite, and the effects of adsorbent dosage, shaking speed, pH, and temperature were investigated. The results indicate that the percentage removal of Cr(VI) increases with an increase in adsorbent dosage, the external diffusion resistance is maintained constant when the shaking speed exceeds 210 rpm, and the optimum pH is 3. The isotherm and kinetic experimental data of Cr(VI) adsorption onto the chitosan/bentonite composite were best-fitted by Redlich–Peterson and Elovich models, respectively. The adsorption process is an exothermic and of the multilayer variety. The desorption rates of Cr(VI) can be achieved at 60.1% with 0.1 M NaOH. The analysis FT-IR of adsorbents before and after adsorption, adsorption thermodynamics and kinetics, and desorption experiment reveal that the adsorption of Cr(VI) on the chitosan/bentonite composite is predominantly a chemical interaction. The above results suggested that the chitosan/bentonite composite can be employed as a cost-effective and environmentally friendly adsorbent for Cr(VI) removal from wastewater.

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Bentonite filler effect on structure and properties of polystyrene-based composites

Cited by 12 publications

References 30 publications

The Influence of Selected Fillers on the Functional Properties of Polycarbonate Dedicated to 3D Printing Applications

The Influence of Selected Fillers on the Functional Properties of Polycarbonate Dedicated to 3D Printing Applications

Efficient removal of bovine serum albumin from water by cellulose acetate membranes modified with clay and titania nano particles

Adsorption of Hexavalent Chromium from Aqueous Solution by a Chitosan/Bentonite Composite: Isotherm, Kinetics, and Thermodynamics Studies

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