Results 201 to 210 of about 14,492 (257)

Glycolysis of poly(ethylene terephthalate) catalyzed by ionic liquids

European Polymer Journal, 2009
Poly(ethylene terephthalate) (PET) from an industrial manufacturer was depolymerized by ethylene glycol in the presence of a novel catalyst: ionic liquids.
Yanqing Liu, Zengxi Li, Xiangping Zhang   +2 more
exaly   +2 more sources

Fe-containing magnetic ionic liquid as an effective catalyst for the glycolysis of poly(ethylene terephthalate)

Catalysis Communications, 2010
The depolymerization of poly(ethylene terephthalate) (PET) in ethylene glycol could be catalyzed by imidazolium-based Fe-containing ionic liquid, 1-butyl-3-methylimidazolium tetrachloroferrate ([bmim]FeCl(4)).
Zengxi Li, Xiangping Zhang, Suojiang Zhang   +2 more
exaly   +2 more sources

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Upcycling Poly(Ethylene Terephthalate): Identification of the Recovered Poly(Ethylene Terephthalate) by Thermogravimetry Analysis

Journal of Macromolecular Science, Part B, 2021
The production and utilization of disposal merchandise made of poly(ethylene terephthalate) (PET) continue to increase with an annual rate of ∼2%.
Nasrollah Hamidi, Nurannahaar Abdussalam, Mehrdad Yazdani-Pedram   +2 more
openaire   +1 more source

Characterization of poly(ethylene terephthalate) and poly(ethylene terephthalate) blends

Polymer, 1997
Abstract A method for the direct determination of the molecular weight of the poly(ethylene terephthalate) (PET) component in PET/acrylonitrile-butadiene-styrene (ABS) blends by gel permeation chromatography has been developed. This technique has been applied to demonstrate that an observed deterioration in the mechanical properties (e.g. Izod impact
Fox, Bronwyn, Moad, Graeme, van Diepen, Gary, Willing, Ian, Cook, Wayne D.   +4 more
openaire   +2 more sources

Blends of poly(ethylene terephthalate) and poly(butylene terephthalate)

Journal of Applied Polymer Science, 2005
AbstractCommercial grade poly(ethylene terephthalate), (PET, intrinsic viscosity = 0.80 dL/g) and poly(butylene terephthalate), (PBT, intrinsic viscosity = 1.00 dL/g) were melt blended over the entire composition range using a counterrotating twin‐screw extruder. The mechanical, thermal, electrical, and rheological properties of the blends were studied.
G. Aravinthan, D. D. Kale
openaire   +1 more source

Dynamic mechanical analysis of poly(trimethylene terephthalate)—A comparison with poly(ethylene terephthalate) and poly(ethylene naphthalate)

Journal of Applied Polymer Science, 2004
AbstractThe fiber properties of PTT have been the subject of several reports, although very few reports describe the properties of molded specimens. In this work, the dynamic mechanical relaxation behavior of compression‐molded PTT films has been investigated.
Mackintosh, A.R., Liggat, J.J.
openaire   +3 more sources

On the mesomorphic form of poly(ethylene terephthalate)

Macromolecules, 1992
The conformation and the packing of PET chains in the mesomorphic form were investigated. The X-ray diffraction pattern presented here is richer than those previously reported. In particular, besides the known meridional peaks at ζ=1/c and 3/c, corresponding to a periodicity of 10.3 A, a stronger meridional peak at ζ=5/c was shown. The reported Fourier
AURIEMMA, FINIZIA, P. CORRADINI, DE ROSA, CLAUDIO, G. GUERRA, V. PETRACCONE, R. BIANCHI, G. DI DINO   +6 more
openaire   +2 more sources

Laser transmission welding of poly(ethylene terephthalate) and biodegradable poly(ethylene terephthalate) – Based blends

Optics and Lasers in Engineering, 2017
Joining of Poly(Ethylene Terephthalate) PET and its biodegradable derivatives is of high relevance to ensure good productive rate, low cost and operational safety for fabrication of medical and electronic devices, sport equipments as well as for manufacturing of food and drug packaging solutions.
Gisario, A, Veniali, F, BARLETTA, MASSIMILIANO, TAGLIAFERRI, VINCENZO, VESCO, SILVIA   +4 more
openaire   +4 more sources

Crystallization in blends of poly(ethylene terephthalate) and poly(butylene terephthalate)

Polymer Engineering & Science, 1997
Abstract Blends composed of poly(ethylene terephthalate) (PET) and poly(butylene terephthalate) (PBT) were melt‐mixed in a Brabender cam mixer at different mixing speeds. The glass transition ( T g ) and the ...
Yishan Yu, Kyung‐Ju Choi
openaire   +1 more source

SYNTHESIS OF POLY(METHYLENE TEREPHTHALATE) AND COPOLYMERS WITH POLY(ETHYLENE TEREPHTHALATE)

Journal of Macromolecular Science, Part A, 2000
Poly(methylene terephthalate) (PMT) and poly(ethylene terephthalate) (PET) were synthesized by triethylamine-mediated reactions of terephthalic acid and dihalomethanes or 1,2-dihaloethanes, respectively. Reactions with chloro compounds required longer reaction times and higher temper-atures than those with bromo.
A. G. Pinkus, Rajan Hariharan, L. P. Thrasher, Atta P. Kesse   +3 more
openaire   +1 more source