Preparation and Characterization of High‐Performance Poly(trimethylene terephthalate) Nanocomposites Reinforced with Exfoliated Graphite

Li, Meilu; Jeong, Young Gyu

doi:10.1002/mame.201000295

Cited by 22 publications

(23 citation statements)

References 35 publications

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“…By contrast, the thermal stability of the nanocomposites based on the temperatures at 5wt% loss maximum rate of weight loss (read as the temperature of the corresponding derivate curves) did not alter significantly with increasing graphene content. This finding is at odds with the literature, where increased thermal stability was reported for polyesters filled with graphene owing to the enhanced barrier properties [21,9]. On the other hand, a moderate increase in thermal stability was reported for PBT-CNT nanocomposites [22,23], which is close to our results.…”

Section: Thermogravimetrical Analysiscontrasting

confidence: 89%

Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites

et al. 2012

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Graphene reinforced cyclic butylene terephthalate (CBT) matrix nanocomposites were prepared and characterized by mechanical and thermal methods. These nanocomposites containing different amounts of graphene (up to 5 wt%) were prepared by melt mixing with CBT that was polymerized in situ during a subsequent hot pressing. The nanocomposites and the neat polymerized CBT (pCBT) as reference material were subjected to differential scanning calorimetry (DSC), dynamical mechanical analysis (DMA), thermogravimetrical analysis (TGA) and heat conductivity measurements. The dispersion of the grapheme nanoplatelets was characterized by transmission electron microscopy (TEM). It was established that the partly exfoliated graphene worked as nucleating agent for crystallization, acted as very efficient reinforcing agent (the storage modulus at room temperature was increased by 39 and 89% by incorporating 1 and 5 wt.% graphene, respectively). Graphene incorporation markedly enhanced the heat conductivity but did not influence the TGA behaviour due to the not proper exfoliation except the ash content.

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Section: Thermogravimetrical Analysiscontrasting

confidence: 89%

Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites

et al. 2012

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“…Similar morphologies for GNP were observed in previous studies [8,22,23]. On the other hand, Figures 5, 6, and 7 show the PET-GNP nanocomposites at 2, 6, and 8 wt.% of GNP loading.…”

Section: Morphological Characterizationsupporting

confidence: 87%

Electrical, Thermal, and Morphological Properties of Poly(ethylene terephthalate)-Graphite Nanoplatelets Nanocomposites

Alshammari

Wilkinson²,

Almutairi

2017

International Journal of Polymer Science

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Graphite nanoplatelets (GNP) were incorporated with poly(ethylene terephthalate) (PET) matrix by melt-compounding technique using minilab compounder to produce PET-GNP nanocomposites, and then the extruded nanocomposites were compressed using compression molding to obtain films of 1 mm thickness. Percolation threshold value was determined using percolation theory. The electrical conductivity, morphology, and thermal behaviors of these nanocomposites were investigated at different contents of GNP, that is, below, around, and above its percolation threshold value. The results demonstrated that the addition of GNP at loading >5 wt.% made electrically conductive nanocomposites. An excellent electrical conductivity of ∼1 S/m was obtained at 15 wt.% of GNP loading. The nanocomposites showed a typical insulator-conductor transition with a percolation threshold value of 5.7 wt.% of GNP. In addition, increasing screw speed enhanced the conductivity of the nanocomposites above its threshold value by ∼2.5 orders of magnitude; this behavior is attributed to improved dispersion of these nanoparticles into the PET matrix. Microscopies results exhibited no indication of aggregations at 2 wt.% of GNP; however, some rolling up at 6 wt.% of GNP contents was observed, indicating that a conductive network has been formed, whereas more agglomeration and rolling up could be seen as the GNP content is increased in the PET matrix. These agglomerations reduced their aspect ratio and then reduced their reinforcement efficiency. NP loading (>2 wt.%) increased degree of crystallinity and improved thermal stability of matrix slightly, suggesting that 2 wt.% of GNP is more than enough to nucleate the matrix.

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“…These improvements in oxygen barrier properties of PET are important from the application point of view in packing industry. Moreover, two series of PTT nanocomposites with EG with the lake size of 0 and 00 μm [91] demonstrated a signiicant enhancement in impermeability to CO 2 and O 2 . The PTT/0.3EG 0 μm and PTT/ 0.…”

Section: Gas Barrier Propertiesmentioning

confidence: 98%

“…"t the same time, nanocomposite based on PTT with 0. wt.% of EG with the lake size of 00 μm proved to be nonconductive. Moreover, Li et al [91] demonstrated that the electrical volume resistivities decreased dramatically at the exfoliated graphite E × G content between 3.0 and .0 wt.% for nanocompo-sites based on PTT prepared via melt compounding. "dditionally, the conductivity percolation for PEN/FGS nanocomposites was obtained with as litle as 0.3 vol.% FGS, whereas 3 vol.% was required for graphite [ ].…”

Section: Electrical Conductivitymentioning

confidence: 99%

Multifunctional Polymer Nanocomposites Based on Thermoplastic Polyesters

Paszkiewicz¹

2016

Functionalized Nanomaterials

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Polymer nanocomposites containing carbon nanoparticles have exhibited remarkable thermal, mechanical and electrical properties. This review is concerned with a narrow sector of polymer nanocomposites, namely those based on engineering polyesters, which are of great industrial interest. The various functionalization methods of modifying carbon nanotubes and graphene derivative forms to allow interacting with polymer matrices will be summarized. Moreover, the review on the processing techniques of obtaining polymer nanocomposites with the emphasis of their efect on the inal properties of the obtained material will be highlighted. The light will be also shed on the nanoiller dispersion in the polymer matrix. Finally, the opportunities and challenges in the high-performance polymer nanocomposites will be presented.Keywords: polymer nanocomposites, thermoplastic polyesters, carbon nanoparticles . IntroductionEngineering polyesters, such as poly ethylene terephthalate PET and poly butylene terephthalate P"T , constitute a group of engineering thermoplastics. However, this group is now expanded by new members of the polyester family, that is, poly trimethylene terephthalate PTT and poly ethylene-2, 6-naphthalate PEN . They combine excellent mechanical, electrical and thermal properties with very good chemical resistance and dimensional stability. Moreover, with excellent processing characteristics and high strength and rigidity, they are widely used in industrial applications. However, still at a commercial level the aforesaid properties, one can further improve through an addition of suitable modifying agents such as nanoillers. There is a wide array of organic and inorganic nanoillers © 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.© 2016 The Author(s). Licensee InTech. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. some of which have been studied more thoroughly than others. "n addition of carbon nanoillers CNF such as carbon nanotubes CNT and graphene derivative forms GDF may seem particularly interesting from the point of view of their inluence on the enhancement of a wide array of material characteristics.The properties of polymer nanocomposites that can be improved due to the presence of carbon nanoparticles CNP , such as carbon nanotubes single-and multi-walled carbon nanotubes and graphene derivatives graphene, expanded graphite, graphene oxide, etc. , include tensile strength, tensile modulus, toughness, thermal properties, electrical and thermal conductivity, optical and barrier properties. However, the aforementioned properties one can obtain only w...

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Preparation and Characterization of High‐Performance Poly(trimethylene terephthalate) Nanocomposites Reinforced with Exfoliated Graphite

Cited by 22 publications

References 35 publications

Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites

Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites

Electrical, Thermal, and Morphological Properties of Poly(ethylene terephthalate)-Graphite Nanoplatelets Nanocomposites

Multifunctional Polymer Nanocomposites Based on Thermoplastic Polyesters

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