Effect of nanoSiO2 Additive of Some Mechanical and Water Absorption of Polyvinyl Alchol/Chitosan Blends

Ali, Nadia A.; Al-Ajaj, E.A.; Noori, Farah T. Mohammed

doi:10.18034/abcjar.v2i1.17

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…Two characteristic peaks positioned at 19. 5 are corresponding to the helical-conformation (1 1 0) / (2 0 0) and 2 0 3 diffraction planes from crystalline structure of Polylactic acid film [26,27].…”

Section: Xrd Analysesmentioning

confidence: 99%

Effect of ZnO, SiO2 and Al2O3 Doped on Morphological, Optical, Structural and Mechanical Properties of Polylactic Acid

Amir

Younes

2022

KEM

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In this study, an experimental investigation of the effect of addition of Alumina (Al2O3), Zinc Oxide (ZnO), and Silicon Oxide (SiO2) particles powders on the mechanical behavior and crystallinity of the PLA films was carried. Granulated of Polylactic acid (PLA) and ceramic powders with different concentrations were prepared to form PLA/ZnO and PLA/ZnO-SiO2-Al2O3 composites films using a solvent casting process. Morphology of PLA and composite films were examined by optical microscopy, chemical and crystal structures of composites are analyzed by (ATR-FTIR) spectroscopy and XRD techniques. Tensile strength and young modulus are determined by traction test. The obtained result by optical microscopy shows the micrograph of PLA samples with different composition are evenly distributed on the film surface. The intensity of the absorption band located at 754 cm-1 which correspond to the crystalline phase of PLA is verified by the ATR-FTIR characterization. The XRD diffraction shows that the ceramic particles influence on the peaks intensity of PLA films localized at 19.5 ° C and 22.5 ° C, which indicate an augmentation in the crystallinity of the composite films. Mechanical tests show Tensile strength and Elasticity modulus are improved after the addition of Oxide Particles to Polylactic acid films.

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Section: Xrd Analysesmentioning

confidence: 99%

Effect of ZnO, SiO2 and Al2O3 Doped on Morphological, Optical, Structural and Mechanical Properties of Polylactic Acid

Amir

Younes

2022

KEM

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show abstract

“…The XRD patterns of PLA/10% SiO2 and PLA/5% SiO2/5% Al2O3 composite films show an increase in the characteristic diffraction peaks of PLA. Therefore, the presence of both SiO2 and Al2O3 particles increases the crystallinity, which is due to the nucleating effect of these particles with PLA, and more crystalline structures develop in the polymer, which has a great impact on the crystallinity of composite films [23,30].…”

Section: Xrd Analysismentioning

confidence: 99%

Thermal and Structural Properties of Poly(Lactic Acid)/Silica/Alumina Composite Materials

Amir

Benrekaa

Younes

2022

MSF

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In the present study, Polylactic acid/ silicon dioxide (SiO2)/ alumina (Al2O3) composite films were produced by a casting method. Thermal, morphological, optical and structural properties of obtaining samples investigated. The addition of aluminum monoxide and silicon dioxide fillers in PLA matrix increases the glass transition temperature significantly, and the Al2O3 and SiO2 particles behave as good nucleating agents with PLA matrix. A homogeneous distribution of SiO2 and Al2O3 particles was observed in the composite films. XRD results revealed that the addition of SiO2 particles improved the crystallinity of PLA, knowing that the degree of crystallinity increase from 2.75% to 31.63% by adding the nucleating agents. The DSC results showed that the glass transition temperature increases by 12 °C in the composites than the pure PLA.

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“…The addition of nanoclay to polymers can provide additional barrier properties. In addition, silica nanoparticles can be added to the polymers to improve mechanical or barrier properties of the nanocomposites .…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical performance and high Brunauer‐Emmett‐Teller surface area of poly(vinyl alcohol)/silica/clay and poly(vinyl alcohol)/(fumed silica)/clay nanocomposites

Lai

Rahman

Hamdan

et al. 2015

Vinyl Additive Technology

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Poly(vinyl alcohol)/silica/clay (PVA-si-clay) and poly(vinyl alcohol)/(fumed silica)/clay (PVA-fsi-clay) nanocomposites were prepared via solution intercalation by exploiting phase separation based on the bridging of particles by polymer chains. Both nanocomposites were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, adsorption isotherm (Brunauer-Emmett-Teller model [BET]), X-ray fluorescence, thermogravimetric analysis, and tensile testing. The Fourier-transform infrared spectroscopy indicated that the PVA-si-clay (1.28E) nanocomposite had a much broader peak compared with other nanocomposites. The PVA-si-clay (1.28E) nanocomposite contained the highest percentage of silicon group compared with other nanocomposites. According to the results of the scanning electron microscopy, clay (1.28E) showed better compatibility with the PVA-si matrix followed by clay (1.30E) with PVA-fsi matrix. The results of the Brunauer-Emmett-Teller model showed PVA-si-clay (1.28E) and PVA-fsi-clay (1.30E) nanocomposites had a higher surface area and average pore volume with a smaller pore size. The hydroxylfunctionalized PVA compatibilizer enhanced the mechanical properties as well as the thermal properties because of a higher level of interaction between the hydroxyl groups of PVA, the silanol groups of silica phase, and the modified clay. J. VINYL ADDIT. TECHNOL.,

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Effect of nanoSiO2 Additive of Some Mechanical and Water Absorption of Polyvinyl Alchol/Chitosan Blends

Cited by 4 publications

References 1 publication

Effect of ZnO, SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> Doped on Morphological, Optical, Structural and Mechanical Properties of Polylactic Acid

Effect of ZnO, SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> Doped on Morphological, Optical, Structural and Mechanical Properties of Polylactic Acid

Thermal and Structural Properties of Poly(Lactic Acid)/Silica/Alumina Composite Materials

Thermomechanical performance and high Brunauer‐Emmett‐Teller surface area of poly(vinyl alcohol)/silica/clay and poly(vinyl alcohol)/(fumed silica)/clay nanocomposites

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