Results 221 to 230 of about 21,634 (268)
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Glycolytic recycle of poly(ethylene terephthalate) (PET)
Makromolekulare Chemie. Macromolecular Symposia, 1992AbstractIn a comparison of PET waste recovery methods, glycolysis to monomer (DHET + low MW oligomers) represents a compromise between regeneration of starting ingredients by methanolysis or hydrolysis and direct remelt extrusion. It is less costly than the former and more versatile than the latter.
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Photo-Initiated Lamination of Polyethylene (PE) and Poly(ethylene terephthalate) (PET)
Journal of Adhesion Science and Technology, 2012Besides plasma-based processes, photo-initiated surface modifications have an interesting potential for adhesion promotion. This is of special interest with applications ranging from classical finishing to composites. Photo-chemical processes using continuous UV sources — monochromatic as well as broad band — are based on radical activation and ensuing
Bahners, Thomas, Gutmann, Jochen Stefan
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How to Make Colorless Poly(ethylene terephthalate)(PET)
International Journal of Polymeric Materials, 2001Abstract The methods and flow charts used for the industrial preparation of PET are shown and briefly discussed. Then, the three classes of contaminants usually appearing in PET are described and their causes elucidated. The organic contaminants impart to the produced PET an undesired yellow-amber tinge while those containing metal ions or elemental ...
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Crystallization of poly(ethylene terephthalate) (PET) from the oriented mesomorphic form
Journal of Applied Polymer Science, 1994AbstractYarns of different inherent viscosities, in the range 0.6–1.1 dL/g, spun in industrial plants, and drawn at room temperature to obtain mesomorphic samples, have been characterized. The evolution from the mesomorphic form toward the triclinic crystalline form has also been studied by combined differential scanning calorimetry (DSC), dynamic ...
L. PARRAVICINI +7 more
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Polymer Bulletin, 2018
The esterification step during poly(ethylene terephthalate) (PET) polymerization was studied using ethylene glycol (EG) and terephthalic acid (TPA), together with microwave radiation in a closed system. First, the effects of temperature and molar ratio EG/TPA on the number-average molecular weight (
Ana Christy Espinosa-López +7 more
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The esterification step during poly(ethylene terephthalate) (PET) polymerization was studied using ethylene glycol (EG) and terephthalic acid (TPA), together with microwave radiation in a closed system. First, the effects of temperature and molar ratio EG/TPA on the number-average molecular weight (
Ana Christy Espinosa-López +7 more
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Chemical recycling of poly(ethylene terephthalate) (pet) by hydrolysis and glycolysis
Environmental Science and Pollution Research, 2003In this paper we review an interesting method of PET recycling, i.e. chemical recycling; it is based on the concept of depolymerizing the condensation polymer through solvolytic chain cleavage into low molecular products which can be purified and reused as raw materials for the production of high-quality chemical products. In this work our attention is
CARTA, DANIELA +2 more
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Physical aging studies in amorphous poly(ethylene terephthalate) (PET) blends
Thermochimica Acta, 1990Abstract Physical aging phenomena of amorphous poly(ethylene terephthalate) (PET) blends have been investigated. Blends modified with dioctylphthalate (DOP), a miscible plasticizer, have shown a significant reduction in the glass transition temperature, while rubber modified blends exhibit no change in Tg.
L. Woo, Y.Wilson Cheung
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Structure formation in UV-laser ablated poly-ethylene-terephthalate (PET)
Applied Physics A Solids and Surfaces, 1991Structure formation observed in UV-laser ablated poly-ethylene-terephthalate (PET) foils can uniquely be assigned to mechanical and thermal pretreatments.
E. Arenholz +4 more
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Impact Response of Waste Poly Ethylene Terephthalate (PET) Composite Plate
Poly ethylene terephthalate (PET) is considered one of the most important engineering polymers for the last two decades due to its rapid growth of usage, aesthetic appearance, good light transmittance, and smooth surface. It is highly preferable for the food and soft drink bottle packaging industry because of its low gas permeability and recycling ...Bilici, İbrahim +2 more
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Triple-shape memory effect in poly (ethylene terephthalate) (PET) film
Pigment & Resin Technology, 2018Purpose This paper aims to focus on achieving triple-shape memory effect (triple-SME) of a commercial poly (ethylene terephthalate) (PET) film with the thickness of 100 µm. Design/methodology/approach The thermal characteristics and microstructure of PET film were characterized by differential scanning calorimetry, thermogravimetric analysis and ...
Xue Lian Wu +3 more
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