scholarly journals Alkaline Hydrolysis Kinetics of Poly(ethylene terephthalate) Fibers

2016 ◽  
Vol 72 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Yutaka Kawahara ◽  
Taiyo Yoshioka ◽  
Wataru Takarada ◽  
Takeshi Kikutani ◽  
Masaki Tsuji
Keyword(s):  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
Hydrolysis Kinetics ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of

scholarly journals Alkaline Hydrolysis Kinetics of Poly(ethylene terephthalate) Fibers

2016 ◽  
Vol 72 (1) ◽  
pp. 9-16
Author(s):  
Yutaka Kawahara ◽  
Taiyo Yoshioka ◽  
Wataru Takarada ◽  
Takeshi Kikutani ◽  
Masaki Tsuji
Keyword(s):  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
Hydrolysis Kinetics ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of

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

1997 ◽  
Vol 67 (10) ◽  
pp. 760-766 ◽  
Author(s):  
M.-C. Yang ◽  
H.-Y. Tsai
Keyword(s):  
Ethylene Glycol ◽  
Degradation Rate ◽  
Ethylene Terephthalate ◽  
Treatment Time ◽  
Alkaline Treatment ◽  
Aqueous System ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Kinetics Of ◽  
Scanning Electron

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.

A kinetic study of the depolymerisation of poly(ethylene terephthalate) by phase transfer catalysed alkaline hydrolysis

2009 ◽  
Vol 84 (1) ◽  
pp. 92-99 ◽  
Author(s):  
R. López-Fonseca ◽  
M. P. González-Marcos ◽  
J. R. González-Velasco ◽  
J. I. Gutiérrez-Ortiz
Keyword(s):  
Kinetic Study ◽  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
Phase Transfer ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Modifying the surface of poly(ethylene terephthalate) nanofibrous materials by alkaline treatment and TiO2 nanoparticles

2017 ◽  
Vol 47 (8) ◽  
pp. 1944-1958 ◽  
Author(s):  
Ali Karimi ◽  
Hossein Izadan ◽  
Akbar Khoddami ◽  
Seyed A Hosseini
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
X Ray Diffraction ◽  
X Ray ◽  
Poly Ethylene Terephthalate ◽  
Dye Absorption ◽  
Poly Ethylene ◽  
Scanning Electron

The mutual effects of nano-TiO2 and alkaline hydrolysis on the morphology, chemical structure, water absorption, and the dyeing behavior of poly(ethylene terephthalate) nanofibers were investigated via employing scanning electron microscope, Fourier Transform Infra Red Spectroscopy (FTIR) and X-ray diffraction, and measuring water contact angle, 3M repellency, and dye absorption. A direct relation between the alkaline hydrolysis rate and nanofibers hydrophilicity was observed, while the addition of the nano-TiO2 led to more hydrophobicity. However, the alkaline hydrolysis had the prominent effect. FTIR spectra illustrated no chemical interaction between the nanoparticles and nanofibers. It was also shown that the dye absorption at dyeing equilibrium and the rate of dyeing were increased by the presence of the nano-TiO2 and these effects were intensified by the alkaline hydrolysis. These observations were related to the reduction in the nanofibers diameter and the increase in the surface roughness, as evidenced in the scanning electron microscope, and the increase in the amorphous regions of the nanofibers, as shown by the X-ray diffraction diffractograms.

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