Ethylene Glycol and Glycerin as the Solvent for Alkaline Treatment of Poly(ethylene Terephthalate) Fabrics

Poly(ethylene terephthalate) fabrics are treated with sodium hydroxide using ethylene glycol or glycerin as the solvent. Compared with conventional aqueous alkaline hydrolysis, the degradation rate in ethylene glycol increases tenfold. The kinetics of the alkaline-ethylene glycol treatment show that the weight loss is linear with respect to time. The moisture regain rate and tensile properties of the treated fabrics are measured; other tests include scanning electron microscopy and dyeing properties. The results show that the properties of the treated fabrics do not depend significantly on the solvent; therefore, using ethylene glycol can greatly shorten the treatment time to achieve results similar to those with the conventional aqueous system.

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Kinetics of poly(ethylene terephthalate) fiber glycolysis in ethylene glycol

Fibers and Polymers ◽

10.1007/s12221-015-1213-4 ◽

2015 ◽

Vol 16 (6) ◽

pp. 1213-1219 ◽

Cited By ~ 7

Author(s):

Feifei Chen ◽

Qingqing Zhou ◽

Ran Bu ◽

Feng Yang ◽

Wei Li

Keyword(s):

Ethylene Glycol ◽

Ethylene Terephthalate ◽

Poly Ethylene Terephthalate ◽

Poly Ethylene ◽

Kinetics Of

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Kinetics of Glycolysis of Poly (ethylene Terephthalate) by Shrinking-Core Model

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.233-235.627 ◽

2011 ◽

Vol 233-235 ◽

pp. 627-631 ◽

Cited By ~ 2

Author(s):

Fei Fei Chen ◽

Guang Hui Wang ◽

Wei Li ◽

Feng Yang

Keyword(s):

Ethylene Glycol ◽

Ethylene Terephthalate ◽

Weight Ratio ◽

Core Model ◽

Shrinking Core Model ◽

Element Analysis ◽

Poly Ethylene Terephthalate ◽

Shrinking Core ◽

Poly Ethylene ◽

Kinetics Of

Poly (ethylene terephthalate) (PET) wastes were depolymerised using excess ethylene glycol (EG) in the presence of zinc acetate as transesterificaion catalyst. Influences of particle size, reaction temperature, weight ratio of ethylene glycol (EG) to PET and weight ratio of catalyst to PET on the yield of bis(hydroxyethyl terephthalate)(BHET) were investigated. The kinetics of glycolysis of PET in EG could be interpreted by the shrinking-core model of chemical reaction control, the activation energy of the glycolysis was 133 KJ/mol. The glycolysis product was analyzed and identified by FTIR and Element analysis.

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Dynamic Step-Scan Two-Dimensional Fourier Transform Infrared Studies of Uniaxially Drawn Poly(Ethylene Terephthalate) Film

Applied Spectroscopy ◽

10.1366/0003702963906249 ◽

1996 ◽

Vol 50 (3) ◽

pp. 377-381 ◽

Cited By ~ 26

Author(s):

Masashi Sonoyama ◽

Kunihiro Shoda ◽

Gen Katagiri ◽

Hideyuki Ishida

Keyword(s):

Ethylene Glycol ◽

Phenyl Ring ◽

Ethylene Terephthalate ◽

High Mobility ◽

Two Dimensional ◽

Poly Ethylene Terephthalate ◽

Dynamic Spectra ◽

Infrared Studies ◽

Poly Ethylene ◽

Mechanical Stretching

Dynamic infrared spectra of uniaxially drawn poly(ethylene terephthalate) (PET) under a sinusoidal strain were examined. A very intense dynamic band at 973 cm−1 assigned to the trans C-O stretching mode indicated stress-induced high mobility around the C-O bond in the ethylene glycol units. It was supposed that derivative-like skeletal bands observed in the dynamic spectra originated from the stress-induced frequency shift. Two-dimensional correlation analyses of the dynamic spectra were also carried out and revealed that the phenyl ring 18a band at 1018 cm−1 and the phenyl ring 19b band at 1410 cm−1 were composed of three and two independent components, respectively. The correlation peaks between the phenyl ring and CH2 vibrational modes showed that orientation of the methylene group in the ethylene glycol unit, induced by mechanical stretching, is faster than that of the phenyl ring in the terephthalate unit.

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