scholarly journals Enhanced Toughness of Hydroxyapatite-poly(ethylene terephthalate) Composites by Immersion in Water

2021 ◽  
Author(s):  
Kohei Okuda ◽  
Ken Hirota ◽  
Tadashi Mizutani ◽  
Yusuke Numamoto
Keyword(s):  
Calcium Ion ◽  
Room Temperature ◽  
Ethylene Terephthalate ◽  
Water Soluble ◽  
Phosphate Ion ◽  
Carboxylate Groups ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Soluble Poly

Water-soluble poly(ethylene terephthalate) bearing carboxylate groups on 14-22% of the phenylene moieties was coprecipitated with calcium ion and phosphate ion in water at room temperature, 70 oC, and 90 oC...

Synthesis and sizing performances of water-soluble polyester based on bis(2-hydroxyethyl) terephthalate derived from depolymerized waste poly(ethylene terephthalate) fabrics

2018 ◽  
Vol 89 (4) ◽  
pp. 572-579 ◽  
Author(s):  
Jing Lu ◽  
Mengjuan Li ◽  
Yanyan Li ◽  
Xiaoqiang Li ◽  
Qiang Gao ◽  
...  
Keyword(s):  
Surface Tension ◽  
Fourier Transform ◽  
Ethylene Terephthalate ◽  
Water Soluble ◽  
Chemical Recycling ◽  
Step Method ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Viscosity Stability

This work aimed at effective chemical recycling of waste poly(ethylene terephthalate) (PET) fabrics into water-soluble polyester (WSP). For this, PET fabric waste was depolymerized using excess ethylene glycol (EG) in the presence of zinc acetate as catalyst. The glycolysis product of PET, bis(2-hydroxyethyl) terephthalate (BHET) was then used to synthesize WSP by a three-step method, that is, transesterification, esterification and polycondensation. The structures of BHET and WSP were identified by Fourier transform infrared spectra. Sizing performances of WSP were studied, and it was found that the surface tension of WSP size (57 mN/m, 22℃, 0.5% of weight) was lower than common sizes, the viscosity of WSP size was 1–2 mPa·S (95℃, 6% of weight) and the viscosity stability was larger than 90% at this temperature. The mixture of WSP and starch showed stronger adhesion to polyester–cotton roving and polyester roving than onefold starch. K/ S values of fibers before sizing and after desizing showed a slightly difference, which indicated that WSP would not influence the color of yarns when used as the sizing agent.

Analysis of the Room-Temperature Molecular Motions of Poly(ethylene terephthalate)

1980 ◽  
Vol 13 (5) ◽  
pp. 1132-1137 ◽  
Author(s):  
M. D. Sefcik ◽  
Jacob Schaefer ◽  
E. O. Stejskal ◽  
R. A. McKay
Keyword(s):  
Room Temperature ◽  
Ethylene Terephthalate ◽  
Molecular Motions ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Surface Modification of Poly(Ethylene Terephthalate) in Air Plasma

2019 ◽  
Vol 27 (1) ◽  
pp. 128-136
Author(s):  
Mioara Drobota ◽  
Alexandru Trandabat ◽  
Marius Pislaru
Keyword(s):  
Contact Angle ◽  
Room Temperature ◽  
Ethylene Terephthalate ◽  
Film Surface ◽  
Air Plasma ◽  
Poly Ethylene Terephthalate ◽  
Modified Surface ◽  
Poly Ethylene ◽  
Pet Films ◽  
Polyester Film

Abstract This paper reports the modification of a polyester film surface in air plasma at room temperature. In order to evaluate the efficiency of the plasma treatment, the modified surface of the PET films was characterized by contact angle and ATR-FTIR spectroscopy.

Increasing the dyeability of polyester fabrics by photochemical treatment at room-temperature using H2O2 in air

2015 ◽  
Vol 17 (1) ◽  
pp. 490-498 ◽  
Author(s):  
Akihiko Ouchi ◽  
Chuanxiang Liu ◽  
Masao Kunioka
Keyword(s):  
Room Temperature ◽  
Ethylene Terephthalate ◽  
Polyester Fabrics ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

An increase in the dyeability of poly(ethylene terephthalate) fabrics was accomplished by irradiation of the fabrics using a germicidal lamp and H2O2 at room-temperature in air.

Flexible SiO2 nanofilms assembled on poly(ethylene terephthalate) substrates through a room temperature fabrication process for nanoscale integration

2015 ◽  
Vol 3 (6) ◽  
pp. 1286-1293 ◽  
Author(s):  
Shunsuke Yamamoto ◽  
Kazuki Sonobe ◽  
Tokuji Miyashita ◽  
Masaya Mitsuishi
Keyword(s):  
Room Temperature ◽  
Ethylene Terephthalate ◽  
Optoelectronic Devices ◽  
Fabrication Process ◽  
Flexible Substrates ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

SiO2 nanofilms on flexible substrates were fabricated through a photo-oxidization process, which is promising for transparent insulator coating on optoelectronic devices.

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