The effect of carbon blacks and surface active substances (SAS) on the synthesis and properties of poly(ethylene terephthalate) (PET). Part II. By-products content, molecular weight, and thermal stability of the polymer

Polimery ◽  
1995 ◽  
Vol 40 (06) ◽  
pp. 341-345
Author(s):  
ZDZISLAW GUMKOWSKI ◽  
TADEUSZ SPYCHAJ
Keyword(s):  
Thermal Stability ◽  
Molecular Weight ◽  
Ethylene Terephthalate ◽  
Carbon Blacks ◽  
Poly Ethylene Terephthalate ◽  
Surface Active ◽  
Poly Ethylene ◽  
By Products ◽  
Thermal Stability Of ◽  
Active Substances

Thermal stability of surfactants with amino and imido groups in poly(ethylene terephthalate)/clay composites

2008 ◽  
Vol 109 (6) ◽  
pp. 4112-4120 ◽  
Author(s):  
Xuepei Yuan ◽  
Chuncheng Li ◽  
Guohu Guan ◽  
Yaonan Xiao ◽  
Dong Zhang
Keyword(s):  
Thermal Stability ◽  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Thermal Stability Of

Effect of chemical surface treatment on thermal stability of poly(ethylene terephthalate) films used in flexible circuits

2005 ◽  
Vol 88 (3) ◽  
pp. 461-467 ◽  
Author(s):  
S.C. Domenech ◽  
V.L.S. Severgnini ◽  
E.A. Pinheiro ◽  
A.O.V. Avila ◽  
N.G. Borges ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Surface Treatment ◽  
Ethylene Terephthalate ◽  
Chemical Surface ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Thermal Stability Of

Effects of Halloysite Nanotubes on Mechanical and Thermal Stability of Poly(Ethylene Terephthalate)/Polycarbonate Nanocomposites

2015 ◽  
Vol 735 ◽  
pp. 8-12
Author(s):  
Nurul Ain Jamaludin ◽  
Azman Hassan ◽  
Norhayani Othman ◽  
Mohammad Jawaid
Keyword(s):  
Thermal Stability ◽  
Ethylene Terephthalate ◽  
Flexural Modulus ◽  
Halloysite Nanotubes ◽  
Mechanical And Thermal Properties ◽  
Poly Ethylene Terephthalate ◽  
Twin Screw ◽  
Poly Ethylene ◽  
The Impact ◽  
Thermal Stability Of

The objective of this study is to investigate the effect of halloysite nanotubes (HNTs) loading on mechanical and thermal properties of poly(ethylene terephthalate)/polycarbonate (PET/PC) nanocomposites. Nanocomposites containing 70PET/30PC and 2-8 phr HNTs were prepared by twin screw extruder followed by injection moulding. As the percentage of HNTs increased, the flexural modulus increased. However, the flexural strength decreased with increasing HNTs content. The impact strength also decreased when HNTs increased. Thermogravimetry analysis of PET/PC/HNTs nanocomposites showed higher thermal stability at high HNTs content. However, on further addition of HNTs up to 8 phr, thermal stability of the nanocomposites decreased due to the poor dispersion of HNTs.

scholarly journals Crystallization and Thermal Behaviors of Poly(ethylene terephthalate)/Bisphenols Complexes through Melt Post-Polycondensation

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3053
Author(s):  
Shichang Chen ◽  
Shangdong Xie ◽  
Shanshan Guang ◽  
Jianna Bao ◽  
Xianming Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Crystallization Kinetics ◽  
Ethylene Terephthalate ◽  
Crystallization Rate ◽  
Chain Growth ◽  
Hydroxyl Groups ◽  
Lamellar Thickness ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Thermal Stability Of

Three kinds of modified poly(ethylene terephthalate) (PET) were prepared by solution blending combined with melt post-polycondensation, using 4,4′-thiodiphenol (TDP), 4,4′-oxydiphenol (ODP) and hydroquinone (HQ) as the bisphenols, respectively. The effects of TDP, ODP and HQ on melt post-polycondensation process and crystallization kinetics, melting behaviors, crystallinity and thermal stability of PET/bisphenols complexes were investigated in detail. Excellent chain growth of PET could be achieved by addition of 1 wt% bisphenols, but intrinsic viscosity of modified PET decreased with further bisphenols content. Intermolecular hydrogen bonding between carbonyl groups of PET and hydroxyl groups of bisphenols were verified by Fourier transform infrared spectroscopy. Compare to pure PET, both the crystallization rate and melting temperatures of PET/bisphenols complexes were reduced obviously, suggesting an impeded crystallization and reduced lamellar thickness. Moreover, the structural difference between TDP, ODP and HQ played an important role on crystallization kinetics. It was proposed that the crystallization rate of TDP modified PET was reduced significantly due to the larger amount of rigid benzene ring and larger polarity than that of PET with ODP or HQ. X-ray diffraction results showed that the crystalline structure of PET did not change from the incorporation of bisphenols, but crystallinity of PET decreased with increasing bisphenols content. Thermal stability of modified PET declined slightly, which was hardly affected by the molecular structure of bisphenols.

scholarly journals Recycling of Mixed Poly(Ethylene-terephthalate) and Poly(Lactic Acid)

2019 ◽  
Vol 253 ◽  
pp. 02005
Author(s):  
Daniel Gere ◽  
Tibor Czigany
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Lactic Acid ◽  
Impact Strength ◽  
Ethylene Terephthalate ◽  
Poly Lactic Acid ◽  
Elongation At Break ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Thermal Stability Of

Nowadays, PLA is increasingly used as a packaging material, therefore it may appear in the petrol-based polymer waste stream. However, with the today’s mechanical recycling technologies PLA and PET bottles cannot be easily or cheaply separated. Therefore, our goal was to investigate the mechanical, morphological and thermal properties of different PET and PLA compounds in a wide range of compositions. We made different compounds from poly(ethylene-terephthalate) (PET) and poly(lactic acid) (PLA) by extrusion, and injection molded specimens from the compounds. We investigated the mechanical properties and the phase morphology of the samples and the thermal stability of the regranulates. PET and PLA are thermodynamically immiscible, therefore we observed a typical island-sea type morphology in SEM micrographs. When PLA was added, the mechanical properties (tensile strength, modulus, elongation at break and impact strength) changed significantly. The Young’s modulus increased, while elongation at break and impact strength decreased with the increase of the weight fraction of PLA. The TGA results indicated that the incorporation of PLA decreased the thermal stability of the PET/PLA blends.

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