Contributions to the thermal degradation mechanism under air atmosphere of PTFE by TG–FTIR analysis: Influence of the additive nature

Odochian, Lucia; Moldoveanu, Costel; Cârjă, Gabriela

doi:10.1016/j.tca.2013.02.008

Cited by 34 publications

(13 citation statements)

References 20 publications

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“…As can be seen, the initial decomposition temperature (T onset ) of FEP fibres is 533.6 C, which is slightly lower than that of PTFE fibres (544.9 C). 14 The residual weight fraction of FEP fibres (1.47%) is close to that of PTFE fibres (2.97%). In addition, the temperature (T p ) at maximum decomposition rate of FEP fibres is 578.4 C and that of PTFE fibres is 581.1 C, which shows a similar trend.…”

Section: Thermal Stabilitymentioning

confidence: 69%

Preparation and properties of melt-spinning fluorinated ethylene propylene fibres

Jiang

Guo

et al. 2016

High Performance Polymers

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In this work, a novel fibre, fluorinated ethylene propylene (FEP) filament, was fabricated by melt-spinning. In addition, the properties of FEP fibres were investigated through apparent morphological observation, tensile testing, dry-hot shrinkage, differential scanning calorimetry, thermogramitric analysis (TGA) and Fourier transform infrared spectroscopy. Apparent morphological observation shows that FEP fibres present circular cross-sections and smooth surfaces. Just like the conventional fibres prepared by melt-spinning, such as poly (ethylene terephthalate) (PET) and polyamide 6, the stress–strain curves of FEP fibres show obvious stress yield points. The elastic recovery ratio of FEP fibres (80%) is much greater than that of polytetrafluoroethylene (PTFE) fibres (40%), endowing FEP textiles good wrinkle resistance. When FEP fibres are deposited in flame, smoke and droplets do not appear but shrinkage does occur. After treatment in hot air, the breaking strength of FEP fibres decreases, but the elongation at break increases. The melting temperature of FEP fibres is as closely high as that of the PET fibres, while the crystallization temperature is much higher, which puts forward greater challenges for FEP spinning. Compared with PTFE fibres, the crystallinity and the melting temperature of FEP fibres are much lower. TGA results demonstrate that FEP fibres present excellent thermal stability that is as stable as that of the PTFE fibres.

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Section: Thermal Stabilitymentioning

confidence: 69%

Preparation and properties of melt-spinning fluorinated ethylene propylene fibres

Jiang

Guo

et al. 2016

High Performance Polymers

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“…The use of mainly polymeric materials is a challenge for applications. For example, polytetrafluorethylene (PTFE), used as the negative material, is transformed into toxic substances when exposed to fire above 400 C and polydimethylsiloxane (PDMS) above 200 C. 83,84 Therefore, it is important for TENG to develop materials with high temperature stability under certain harsh conditions. Poly (p-phenylene benzobisoxazole) (PBO), which is a rod-like aromatic heterocyclic polymer, exhibits excellent thermal stability, with a decomposition temperature of up to 650 C. 85 Very little toxic substance was detected when PBO, which has high mechanical performance, is exposed to fire.…”

Section: Organic Aerogelmentioning

confidence: 99%

Aerogel based nanogenerators: Production methods, characterizations and applications

Korkmaz

Kariper

2020

Int J Energy Res

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Thanks to the nanogenerators known as state-of-the-art energy collecting devices, the mechanical energy in every environment can be converted into electrical energy. Some studies on the improvement of the performance of triboelectric and piezoelectric nanogenerators that convert mechanical energy to electrical energy revealed that aerogels brought significant outcomes in the development of nanogenerators. Aerogels, the lightest solid material known, provides a large surface area as the contact area of the nanogenerators, its adjustable porosity allows to improve electronic properties of the nanogenerators, showing its significance in electronics once again. At the same time, the use of aerogels, which is the best candidate in terms of flexibility and mechanical strength required in wearable electronics, in the production of nanogenerators continues to attract the attention of researchers. This study includes an introduction of aerogels and the discussions on the studies involving aerogel based nanogenerators. In the paper, the studies in the literature, focusing on the advantages of aerogel based nanogenerators and their current applications were collected. Three different types of aerogel nanogenerators production were observed to be produced. They are all based on aerogel electrodes produced from different materials, and the paper outlines them with basic working principles. This classification of aerogel nanogenerators and outlining the results will make a significant contribution to the literature and will be a good source for researchers who want to work in this field.

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“…19,20 We'd like to point out a series of papers on this subject by Lucia Odochian and co-workers. [21][22][23][24][25] Never used before for this polymer, NPK allows for some new kinetic aspects of the degradation process to be obtained and provides an accurate description of the process, that can be relied upon in a subsequent mechanistic modeling of the degradation reactions.…”

Section: Introductionmentioning

confidence: 99%

Non-parametric kinetic analysis of thermogravimetric data for the thermal degradation of poly(tetrafluorethylene)

Dumitraşa

2014

Acta Chemica Iasi

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Thermal degradation of Teflon was investigated by thermoanalytical methods (TG and DTA). In the kinetic analysis of the experimental data, the NPK method proves to be a valuable tool, allowing for some new kinetic aspects of the degradation process to be obtained. Analysis of the computed isothermal and isoconversional vectors provided some insight into the reaction kinetics. Two different initiation pathways were suggested to control the global degradation kinetics, their relative contribution being temperature-dependant

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Contributions to the thermal degradation mechanism under air atmosphere of PTFE by TG–FTIR analysis: Influence of the additive nature

Cited by 34 publications

References 20 publications

Preparation and properties of melt-spinning fluorinated ethylene propylene fibres

Preparation and properties of melt-spinning fluorinated ethylene propylene fibres

Aerogel based nanogenerators: Production methods, characterizations and applications

Non-parametric kinetic analysis of thermogravimetric data for the thermal degradation of poly(tetrafluorethylene)

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