The Effect of Compatibilization on the Properties and Foaming Behavior of Poly(ethylene terephthalate)/Poly(ethylene-octene) Blends

2017 ◽  
Vol 36 (6) ◽  
pp. 313-332 ◽  
Author(s):  
Wenbo Wang ◽  
Kesong Yu ◽  
Hongfu Zhou ◽  
Xiangdong Wang ◽  
Jianguo Mi
Keyword(s):  
Cell Size ◽  
Cell Density ◽  
Ethylene Terephthalate ◽  
Complex Viscosity ◽  
Elongation At Break ◽  
Brittle Ductile Transition ◽  
Poly Ethylene Terephthalate ◽  
Blending Method ◽  
Foaming Behavior ◽  
Poly Ethylene

The methodology for improving the properties and foaming behavior of poly (ethylene terephthalate) (PET)/poly(ethylene-octene) (POE) blends through compatibilization was proposed. In this paper, PET/POE blends were prepared through a melt blending method, POE was employed as elastomer toughener, maleic anhydride grafted POE (mPOE) was selected as compatibilizer, and pyromellitic dianhydride (PMDA) was used as chain extender. The content of mPOE was changeable to study the effect of compatibility on crystallization behavior, toughness, dispersion morphology, and rheological behavior of PET/ POE blends. The results demonstrated that the crystallization peak of PET/POE blends shifted towards high temperatures from 196.97°C to 201.24°C with the content of mPOE increasing. The brittle-ductile transition for PET/POE blends occurred at the mPOE content in the range of 4–5 phr. The particle size of POE dispersed phase decline firstly and then was almost unchanged with an increasing content of mPOE. The storage modulus and complex viscosity of compatibilized PET/POE blends were obviously higher than that of uncompatibilized PET/POE blends. Then PET/POE blends were foamed using supercritical CO2 as physical blowing agent. The results showed that the cell size, cell density, and tensile properties of the PET/POE blending foams were affected by the content of mPOE strongly. With the content of mPOE, the cell size decreased and then kept stable as well as the cell density the trend of cell size increased then remained unchanged. In addition, the elongation at break of PET/POE blending foams was higher than that of the uncompatibilized PET/POE blending foam. PET/POE blending foams with fine cell morphology and good ductility could be achieved with a proper content of compatibilizer in the blends.

Bicomponent multifilament yarns of recycled poly(ethylene terephthalate) and nano-titanium dioxide for antibacterial carpet

2021 ◽  
pp. 152808372110117
Author(s):  
Sommai Pivsa-Art ◽  
Komson Sunyikhan ◽  
Weraporn Pivsa-Art
Keyword(s):  
Antibacterial Activity ◽  
Titanium Dioxide ◽  
Ethylene Terephthalate ◽  
Antibacterial Properties ◽  
Nano Structure ◽  
Elongation At Break ◽  
High Antibacterial Activity ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Multifilament Yarns

Recycled poly(ethylene terephthalate) (RPET) multifilament yarns are used in carpet manufacturing as a way to reduce plastic waste. The conventional RPET carpet is however susceptible to bacterial accumulation. As a result, this research experimentally doped RPET with nano-structure titanium dioxide (nano-TiO2) to produce RPET/nano-TiO2 bicomponent multifilament yarns with antibacterial property. The experimental multifilament yarn structure consisted of two parts: neat RPET core and RPET/nano-TiO2 shell. The nano-TiO2 content in the shell was varied between 1 and 3 wt% and the core/shell (C/S) ratios between 90/10, 70/30, and 50/50 w/w. The effects of C/S ratio and nano-TiO2 content on the mechanical and antibacterial properties of bicomponent multifilament yarns were determined. The experimental results indicated that the C/S ratio had no effect on the tenacity and elongation at break. Meanwhile, the tenacity and elongation at break of bicomponent fibers increased with nano-TiO2 content in the shell. The TiO2-doped RPET bicomponent yarns effectively inhibited the growth of Escherichia coli and Staphylococcus aureus. The 90/10 bicomponent multifilament fiber with 3 wt% TiO2 achieved the highest antibacterial activity. The very high antibacterial activity was attributable to greater deposition of nano-TiO2 particles near and on the shell surface.

The Preparation and Characterization of Branching Poly(ethylene terephthalate) and its Foaming Behavior

2015 ◽  
Vol 34 (2) ◽  
pp. 63-94 ◽  
Author(s):  
Haiming Liu ◽  
Xiangdong Wang ◽  
Hongfu Zhou ◽  
Wei Liu ◽  
Bengang Liu
Keyword(s):  
Ethylene Terephthalate ◽  
Poly Ethylene Terephthalate ◽  
Foaming Behavior ◽  
Poly Ethylene

Preparation and Characterization of Flame Retardant PET Fiber via Melt Blending

2018 ◽  
Vol 913 ◽  
pp. 729-737
Author(s):  
Hui Ling Xu ◽  
Hong Kun Bao ◽  
Chao Sheng Wang ◽  
Hua Ping Wang
Keyword(s):  
Flame Retardant ◽  
Ethylene Terephthalate ◽  
Carbon Layer ◽  
Melt Blending ◽  
Fiber Fracture ◽  
Limiting Oxygen Index ◽  
Poly Ethylene Terephthalate ◽  
Blending Method ◽  
Poly Ethylene

Poly(ethylene terephthalate) (PET) fiber with excellent flame retardant property was prepared with introducing a containing phosphorus flame retardant 10-(2’,5’-dihydroxyphenyl) -9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) into PET by melt blending method. The intrinsic viscosity of the modified PET was decreased after melt blending, indicated that ODOPB could promote the degradation of PET. The addition of ODOPB can increase the amount of carbon residue of PET, which can effectively reduce the heat transfer. The movement and regularity of PET molecular chain are affected by ODOPB, resulting in the reducing of the crystallization of PET. The Raman curves indicate that the addition of ODOPB can improve the regularity of carbon layer, which is conducive to achieve the effect of flame retardant. When the mass fraction of P is 0.7 %, the limiting oxygen index of sample reaches 32.4% and UL-94 vertical reaches V-2, the fiber fracture strength is 2.6 cN/dtex, which has excellent flame retardant and mechanical properties.

Calix[4]arenes Used as a New Type of Chain Extender in the Preparation of Polyurethanes

2007 ◽  
Vol 60 (3) ◽  
pp. 167 ◽  
Author(s):  
Qin Zheng ◽  
Shuling Gong ◽  
Haiqing Dong ◽  
Yuanyin Chen
Keyword(s):  
Ethylene Terephthalate ◽  
Toluene Diisocyanate ◽  
Elongation At Break ◽  
Poly Ethylene Terephthalate ◽  
Solvent Type ◽  
Lower Yield Strength ◽  
New Type ◽  
Chain Extenders ◽  
Poly Ethylene ◽  
Hydroxy Groups

A series of polyether– or polyester–polyurethanes based on tetrahydrofuran–propylene oxide copolyether diol (PTMG/PPG) or poly(ethylene terephthalate) diol (PET), toluene diisocyanate (TDI), and three kinds of chain extenders including two calix[4]arene derivatives and 3,3´-dichloro-4,4´-diaminodiphenylmethane (MOCA) were synthesized in toluene. The thermal stability and mechanical properties of solvent-type polyurethanes were investigated. Incorporation of calixarenes into polyurethane backbones improved the thermal properties of the polyurethane as a result of the residual phenol hydroxy groups of the calix[4]arene units. Compared with polyurethane chain-extended by MOCA, the polyurethanes with calix[4]arene derivatives had higher elongation at break, lower elastic modulus, and lower yield strength, as a result of the larger steric cubage of calix[4]arene units and relatively large free volume of the polymer.

scholarly journals Effects of Thermal and Solvent Aging on Breakdown Voltage of TPE, PBT/PET Alloy, and PBT Insulated Low Voltage Electric Wire

2013 ◽  
Vol 2013 ◽  
pp. 1-11
Author(s):  
Eun-Soo Park
Keyword(s):  
Breakdown Voltage ◽  
Ethylene Terephthalate ◽  
Dielectric Breakdown ◽  
Low Voltage ◽  
Thermoplastic Elastomer ◽  
Polyester Resins ◽  
Elongation At Break ◽  
Copper Conductor ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

Tests were performed to evaluate the effects of thermal and solvent aging on the mechanical and dielectric breakdown properties of four types of polyester resins, namely, the insulation layer of poly(butylene terephthalat) (PBT)- based thermoplastic elastomer (TPE, TPE1), poly(butylene 2,6-naphthalate)-based TPE (TPE2), PBT/poly(ethylene terephthalate) alloy (Alloy), and PBT extruded onto a copper conductor of low voltage electric wire. The tensile specimens used in this series were prepared from the same extruded resins. The prepared electric wires and tensile specimens were thermally aged in air and in toluene, xylene, TCB, and NMP. When Alloy and PBT were thermally aged in toluene, xylene and TCB at 120°C for 6 h, the tensile properties were significantly decreased compared to TPE1 and TPE2 at the same condition. The reduction of elongation at break of Alloy was more discernible than that of PBT. This result indicated that Alloy is more affected by thermal and solvent ageing. Among them, TPE2 showed the highest breakdown voltage (BDV), and it has also the highest BDV after thermal and solvent aging.

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.

scholarly journals Fine dispersion morphology of polystyrene/poly(ethylene terephthalate glycol) blending generation for controlled foaming behavior

RSC Advances ◽  
2017 ◽  
Vol 7 (62) ◽  
pp. 39138-39146 ◽  
Author(s):  
Wenzhao Wang ◽  
Liancai Wang ◽  
Yang Jiao ◽  
Xinmiao Zeng ◽  
Xiangdong Wang ◽  
...  
Keyword(s):  
Ethylene Terephthalate ◽  
Fine Dispersion ◽  
Poly Ethylene Terephthalate ◽  
Foaming Behavior ◽  
Poly Ethylene ◽  
Internal Mixer

Polystyrene/poly(ethylene terephthalate glycol) (PS/PETG) blends with different PETG contents were prepared using a Haake internal mixer at 190 °C.

Poly(Butylene Succinate) and Recycled Poly(Ethylene Terephthalate) Blends Adding GMA as Compatibilizer: Mechanical Properties and Chemical Resistance to Household Chemicals

2019 ◽  
Vol 798 ◽  
pp. 291-297 ◽  
Author(s):  
Nattakarn Hongsriphan ◽  
Supakorn Samangain ◽  
Yuttanawee Siriteeraphan ◽  
Nattakarn Yangcheepyuenyoodee
Keyword(s):  
Tensile Strength ◽  
Glycidyl Methacrylate ◽  
Ethylene Terephthalate ◽  
Chemical Resistance ◽  
Chemical Compatibility ◽  
Butylene Succinate ◽  
Elongation At Break ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Household Chemicals

Recycled poly(ethylene terephthalate) (rPET) from post-consumer drinking bottles was added into poly(butylene succinate) (PBS), which aimed to improve chemical resistance and also reduce cost. PBS and rPET with the weight ratios of 100/0, 90/10, 80/20, 70/30, 60/40, and 50/50 wt% were melt blended using glycidyl methacrylate (GMA) of 0, 3, and 5 phr as a compatibilizer and dicumyl peroxide (DCP) of 0.5 phr as an initiator. It was found that increasing rPET content enhanced Young’s modulus of the blends. However, tensile strength, and elongation at break of the blends were reduced due to phase separation. Incorporating GMA improved chemical compatibility resulting the PBS/rPET blends to have higher tensile strength and elongation at break. Compared to pure PBS, blending rPET improved chemical resistance to household chemicals such as bathroom cleaning liquid (hydrochloric acid based) and bleaching liquid, which the blends adding GMA showed even better chemical resistance.

Composite Artificial Tendons with Hydrogel Matrix

1995 ◽  
Vol 60 (11) ◽  
pp. 1995-2005 ◽  
Author(s):  
Jan Kolařík
Keyword(s):  
Mechanical Properties ◽  
Ethylene Terephthalate ◽  
Volume Fraction ◽  
Creep Behaviour ◽  
Fibre Volume Fraction ◽  
Fibre Volume ◽  
Elongation At Break ◽  
Poly Ethylene Terephthalate ◽  
Hydrogel Matrix ◽  
Poly Ethylene

The brief review is concerned with synthetic model tendons consisting of water-swollen hydrogel matrix and poly(ethylene terephthalate) fibres. Texturized fibres were employed in tendon construction in order to imitate stress-strain and other mechanical properties of natural tendons. Stiffness, creep behaviour, strength, and elongation-at-break of model tendons are predetermined by those of incorporated fibre bundles. Thus, by varying the fibre volume fraction, it is possible to achieve mechanical properties required for various types of tendon prostheses.

scholarly journals Poly(ethylene terephthalate)-carbon nanofiber nano composite for fiber spinning; properties and combustion behavior

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Jenny Alongi ◽  
Alberto Frache
Keyword(s):  
Ethylene Terephthalate ◽  
Carbon Nanofiber ◽  
Fiber Spinning ◽  
Cone Calorimetry ◽  
Nano Composite ◽  
Elongation At Break ◽  
Poly Ethylene Terephthalate ◽  
Flame Retardant Properties ◽  
Poly Ethylene ◽  
Combustion Tests

AbstractCarbon nanofiber (CNF)-polyethylene terephthalate (PET) blends were previously prepared by melt blending and, subsequently, melt spun in order to obtain nanostructured fibers characterized by high flame retardant properties and resistance to the combustion. The morphological analysis showed that CNFs are homogeneously distributed and finely dispersed within PET matrix. The mechanical properties in tensile testing of the fibers change in the presence of CNFs: the elongation at break increases, whereas the tenacity and the tensile strength decrease. The combustion tests by cone calorimetry reveal a relevant decrease of heat release rate, total heat evolved and total smokes released by the nanocomposites as compared to neat PET.

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