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Polyethylene terephthalate

About: Polyethylene terephthalate is a(n) research topic. Over the lifetime, 11857 publication(s) have been published within this topic receiving 108623 citation(s). The topic is also known as: poly(ethylene terephthalate) & PET. more


Journal ArticleDOI: 10.1038/NMAT2372
18 Jan 2009-Nature Materials
Abstract: Present Li-ion batteries for portable electronics are based on inorganic electrodes. For upcoming large-scale applications the notion of materials sustainability produced by materials made through eco-efficient processes, such as renewable organic electrodes, is crucial. We here report on two organic salts, Li2C8H4O4 (Li terephthalate) and Li2C6H4O4(Li trans-trans-muconate), with carboxylate groups conjugated within the molecular core, which are respectively capable of reacting with two and one extra Li per formula unit at potentials of 0.8 and 1.4 V, giving reversible capacities of 300 and 150 mA h g-1. The activity is maintained at 80 °C with polyethyleneoxide-based electrolytes. A noteworthy advantage of the Li2C8H4O4 and Li2C6H4O4 negative electrodes is their enhanced thermal stability over carbon electrodes in 1 M LiPF6 ethylene carbonate-dimethyl carbonate electrolytes, which should result in safer Li-ion cells. Moreover, as bio-inspired materials, both compounds are the metabolites of aromatic hydrocarbon oxidation, and terephthalic acid is available in abundance from the recycling of polyethylene terephthalate. more

Topics: Organic radical battery (55%), Terephthalic acid (54%), Polyethylene terephthalate (51%) more

752 Citations

Journal ArticleDOI: 10.1063/1.93601
Abstract: Radiation of 193‐nm (ArF excimer laser) wavelength can cause the etching of surfaces of poly(ethylene terephthalate) (PET) films in a controlled manner without any subsequent processing. Etch rates of 1200 A/pulse of 370 mJ/cm2 were realized in air. The reaction can be attributed to (ijk) the high absorption cross section of the films for the radiation which results in the energy being trapped in the first 2700 A, (ii) the high efficiency for bond breaking at these photon energies, and (iii) the formation of numerous small fragment molecules which promotes their volatization. The process is observed in a vacuum but is considerably modified in the presence of air. more

653 Citations

Journal ArticleDOI: 10.1016/J.POLYMER.2010.01.027
Hao-Bin Zhang1, Wenge Zheng1, Qing Yan1, Yong Yang1  +4 moreInstitutions (2)
02 Mar 2010-Polymer
Abstract: Graphene nanosheets were prepared by complete oxidation of pristine graphite followed by thermal exfoliation and reduction. Polyethylene terephthalate (PET)/graphene nanocomposites were prepared by melt compounding. Transmission electron microscopy observation indicated that graphene nanosheets exhibited a uniform dispersion in PET matrix. The incorporation of graphene greatly improved the electrical conductivity of PET, resulting in a sharp transition from electrical insulator to semiconductor with a low percolation threshold of 0.47 vol.%. A high electrical conductivity of 2.11 S/m was achieved with only 3.0 vol.% of graphene. The low percolation threshold and superior electrical conductivity are attributed to the high aspect ratio, large specific surface area and uniform dispersion of the graphene nanosheets in PET matrix. more

Topics: Graphene oxide paper (65%), Graphene foam (63%), Graphene nanoribbons (61%) more

633 Citations

Journal ArticleDOI: 10.1063/1.126052
Abstract: The increase in sheet resistance of indium–tin–oxide (ITO) films on polyethylene terephthalate with increasing tensile strain is reported. The increase in resistance is related to the number of cracks in the conducting layer which depends upon applied strain and film thickness. We propose a simple model that describes the finite but increasing resistance in the cracked ITO layer in terms of a small volume of conducting material within each crack. more

Topics: Sheet resistance (60%), Indium tin oxide (57%), Electrical resistance and conductance (53%) more

568 Citations

Journal ArticleDOI: 10.1016/J.BIOMATERIALS.2004.07.026
Zuwei Ma1, Masaya Kotaki1, Thomas Yong1, Wei He1  +1 moreInstitutions (1)
01 May 2005-Biomaterials
Abstract: Non-woven polyethylene terephthalate nanofiber mats (PET NFM) were prepared by electrospinning technology and were surface modified to mimic the fibrous proteins in native extracellular matrix towards constructing a biocompatible surface for endothelial cells (ECs). The electrospun PET NFM was first treated in formaldehyde to yield hydroxyl groups on the surface, followed by the grafting polymerization of methacrylic acid (MAA) initiated by Ce(IV). Finally, the PMAA-grafted PET NFM was grafted with gelatin using water-soluble carbodiimide as coupling agent. Plane PET film was also surface modified and characterized for basic understanding of the surface modification process. The grafting of PMAA and gelatin on PET surface was confirmed by XPS spectroscopy and quantitatively analyzed by colorimetric methods. ECs were cultured on the original and gelatin-modified PET NFM and the cell morphology, proliferation and viability were studied. Three characteristic surface makers expressed by ECs were studied using immuno-florescent microscopy. The gelatin grafting method can obviously improve the spreading and proliferation of the ECs on the PET NFM, and moreover, can preserve the EC's phenotype. more

Topics: Surface modification (56%), Polyethylene terephthalate (52%), Cell morphology (52%) more

509 Citations

No. of papers in the topic in previous years

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Topic's top 5 most impactful authors

Ursula Murschall

14 papers, 112 citations

Tony Clifford Moore

11 papers, 212 citations

Peter Bier

9 papers, 205 citations

Michael E. Brennan

9 papers, 171 citations

I. M. Ward

8 papers, 257 citations

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