Synthesis and characterization of ZnO/PET composite using supercritical carbon dioxide impregnation technology

Maurício, Marcos R.; Manso, Fernando; Kunita, Marcos H.; Velasco, D.; Bento, A. C.; Muniz, Edvani C.; Carvalho, Gizilene Maria de; Rubira, Adley F.

doi:10.1016/j.compositesa.2011.03.002

Cited by 23 publications

(9 citation statements)

References 30 publications

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“…The nanocomposite showed an increased storage modulus and electrical conductivity compared to plain PET, with a percolation threshold of 1.05 wt%. A strong photoluminescence emission was observed at 390 nm from the PET/ZnO nanocomposites (Mauricio et al, 2011). XRD analysis showed narrowing diffraction peaks for PET with increasing ATO content, indicative of smaller crystallites of PET being formed (Chen et al, 2007).…”

Section: Other Types Of Pet Nanocompositesmentioning

confidence: 96%

“…The incorporation of ATO nanoparticles increased the crystallinity of PET, due to ATO functioning as a heterogeneous nucleating agent. Among other composites, PET/zinc oxide (ZnO) nanocomposites have been made by incorporating PET films with a zinc precursor that was solubilized in supercritical carbon dioxide (Mauricio et al, 2011). Increasing the ATO content increased the crystallization temperature and decreased the half crystallization time of PET.…”

Section: Other Types Of Pet Nanocompositesmentioning

confidence: 99%

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Preparation, characterization, and applications of poly(ethylene terephthalate) nanocomposites

Korivi¹

2015

Manufacturing of Nanocomposites With Engineering Plastics

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Section: Other Types Of Pet Nanocompositesmentioning

confidence: 96%

Section: Other Types Of Pet Nanocompositesmentioning

confidence: 99%

Preparation, characterization, and applications of poly(ethylene terephthalate) nanocomposites

Korivi¹

2015

Manufacturing of Nanocomposites With Engineering Plastics

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“…Supercritical carbon dioxide (scCO 2 ) impregnation technology is an advantageous method for modification of polymers by grafting monomers, metallic complexes, drugs, and attainment of polymer composites [10][11][12][13]. The use of scCO 2 as a supercritical fluid is also advantageous from an economic point of view because it does not require drastic conditions of both temperature (T c = 31.1 8C) and pressure (P c = 7.39 MPa) to reach the supercritical state.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of luminescent polycarbonate grafted with methyl methacrylate/europium complex using supercritical CO2 technology as a green chemistry method

et al. 2012

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Modification of polymers using supercritical carbon dioxide (scCO 2 ) impregnation technology is an advantageous method for imparting desirable properties into a new polymer formulation without the architecture of the material being affected. Methyl methacrylate (MMA) and acrylic complex of europium [Eu(TTA) 3 AA] were impregnated on polycarbonate (PC) in the scCO 2 phase. There was an increase in the amount of grafted Eu(TTA) 3 AA complex up to 6 h of impregnation, reaching 0.24% of grafting. For longer times of grafting, it was observed a small decrease in the amount of Eu(TTA) 3 AA complex in the PC polymer. On the other hand, the total amount of grafted MMA/Eu(TTA) 3 AA monomers increased for up to 10 h of impregnation. The PC-g-MMA/Eu(TTA) 3 AA copolymers showed appreciable luminescence emission at room temperature. Furthermore, the SEM images show that there was no formation of agglomerates in the structure of the copolymers over the grafting process, suggesting a excellent distribution of Eu(TTA) 3 AA complex in the copolymer matrix.

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“…ZnO nanostructures can be synthesized by different processes such as chemical vapor deposition (CVD) [ 10 ], supercritical fluid deposition (SCFD) or in situ method. However, the first two processes deal with surface treatment, where bulk properties like mechanical or thermal cannot be achieved [ 11 ]. Further, nanoparticles produce aggregation because of lacks high yield and control on the morphology of nanoparticles [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal Degradation Kinetics of ZnO/polyester Nanocomposites

et al. 2020

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ZnO particles were synthetized by the sol–gel method and subsequent heat treatment of 400, 500 and 600 °C was applied. The nano ZnO particles were incorporated to the unsaturated polyester resin by solution blending at 0.05 wt % concentration. X-ray diffraction detected the formation of a wurtzite-like structure. Viscoelastic behavior of neat polyester and nanocomposites revealed the nano ZnO particles does not promote better mechanical properties because of a weak interaction and the glass transition temperature of the polyester was favored by the presence of a higher quantity of nano-size ZnO particles. Thermogravimetric analysis at 5, 10 and 20 °C/min allowed determining the degradation kinetic parameters based on the Friedman and Kissinger models for neat polyester and nanocomposites. Heating rates promoted an increase in the temperature degradation and the addition of ZnO particles promoted a catalyst effect that reduce the amount of thermal energy needed to start the thermal degradation.

show abstract

Synthesis and characterization of ZnO/PET composite using supercritical carbon dioxide impregnation technology

Cited by 23 publications

References 30 publications

Preparation, characterization, and applications of poly(ethylene terephthalate) nanocomposites

Preparation, characterization, and applications of poly(ethylene terephthalate) nanocomposites

Synthesis of luminescent polycarbonate grafted with methyl methacrylate/europium complex using supercritical CO2 technology as a green chemistry method

Thermal Degradation Kinetics of ZnO/polyester Nanocomposites

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