The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Yang, Junlong; Huang, Yajiang; Lv, Yadong; Li, Songrong; Yang, Qi; Li, Guangxian

doi:10.1016/j.carbon.2015.03.069

Cited by 43 publications

(28 citation statements)

References 43 publications

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“…The peak at around 288 eV is due to the CO group. When H 3 PO 3 is treated, the corresponding peak shifts upward, and this result demonstrates that some amounts of carbonyl groups are formed by the treatment (Table ) . These results are in line with above FTIR analysis.…”

Section: Resultssupporting

confidence: 85%

“…Figure shows deconvoluted O 1s bands. The deconvoluted peak centered at 531 eV is attributable to OC, whose position is in good agreement with the reference . However, the corresponding peak for the H 3 PO 3 3‐h treated sample was shifted upward to 533.4 eV, as shown in Figure (c).…”

Section: Resultssupporting

confidence: 81%

“…The upward shift for the 3‐h treated non‐washed is due to OP bonds of the added H 3 PO 3 compound. Thus, this is evidence that the COP and POP linkage formed by the treatment accounts for the peak shift …”

Section: Resultsmentioning

confidence: 64%

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Flame retardancy for cotton cellulose treated withH₃PO₃

Lee

2018

J of Applied Polymer Sci

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The flame retardancy of cotton fabrics has been improved with treatment of phosphorous aqueous solution. In this study, cotton cellulose is treated with simple treatment and benign chemicals including an aqueous H 3 PO 3 solution dipping and heat annealing. The flame retardancy of the H 3 PO 3 treated cotton fabrics is enhanced to the degree that it is non-flammable. Thermogravimetric analysis results show that the residue increased up to about 50% at 800 8C by the treatment. Scanning electron microscopy exhibit some disconnection of fibers and the fibers are fragile. X-ray diffractometry reveal little damage to the crystalline structure of cellulose. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy show some portion of the added H 3 PO 3 reacted with cellulose components to be phosphorylated and dehydrated. The resulting data and analysis demonstrate that these dehydrated and phosphorylated moieties formed by treatment of phosphorous solution help accelerate the formation of char components, resulting in improved flame retardancy of cellulose materials.

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Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 81%

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Flame retardancy for cotton cellulose treated withH₃PO₃

Lee

2018

J of Applied Polymer Sci

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“…Lots of studies have shown that GO has a free radical capture function in the combustion process and a flame‐retarding role in the condensed phase . To understand whether or not GHNT exhibits a free radical capture function, typical ESR tests were carried out.…”

Section: Resultsmentioning

confidence: 99%

Flame‐retardant cyanate ester resin with suppressed toxic volatiles based on environmentally friendly halloysite nanotube/graphene oxide hybrid

Zhang¹,

Xu²,

Yuan³

et al. 2018

J of Applied Polymer Sci

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Development of high‐performance thermosetting resins by adding environmentally friendly flame retardant to heat‐resistant resins without deteriorating their outstanding thermal stability is an important research direction. Here, a unique hybrid (GHNT) consisting of graphene oxide (GO) and halloysite nanotubes (HNT) was synthesized, and then a series of composites based on cyanate ester (CE) resin were fabricated. The effects of GHNT on the heat resistance, flame retardancy, and smoke suppression of GHNT/CE composites were intensively investigated. The GHNT/CE composite with 5.0 wt % GHNT not only has about 15.1 °C higher initial degradation temperature, but also shows 54.6% or 37.9% lower peak heat release rate or maximum smoke density than CE resin. These results clearly demonstrate that GHNT is not the simple combination of GO and HNT; instead, it obviously shows positive synergistic effects in simultaneously improving the flame retardancy and thermal resistance of CE resin. The improved flame retardancy could be attributed to condensed‐phase mechanisms, including increasing char yield, building a dense char layer, and free radical scavenging. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46587.

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“…Thus, the depolymerization of backbone plays a dominant role in these samples during aging, confirmed the results of elongation at break measurement of SR nanocomposites before and after aging. Actually, rGO has excellent barrier effect due to its large exfoliation extent and homogeneous dispersion, which inhibited the oxidation and/or rupture of the side group during the thermal degradation of SR nanocomposites. And consequently, compared with blank SR, the crosslinking reaction was retarded and the mobilization of SR macromolecules was improved notably, leading to the depolymerization of backbone being accelerated remarkably.…”

Section: Resultsmentioning

confidence: 99%

The improved thermal oxidative stability of silicone rubber by incorporating reduced graphene oxide: Impact factors and action mechanism

et al. 2016

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To investigate the impact factors and action mechanism for the improved thermal oxidative stability of silicone rubber (SR) by incorporating reduced graphene oxide (rGO), graphene oxide (GO), and rGO were prepared, and subsequently graphite, GO and different amounts of rGO were introduced into SR. Transmission electron microscopy, X‐ray photoelectron spectroscopy, and X‐ray diffraction were performed to characterize morphology and surface chemical composition of particles (graphite, GO, and rGO). Scanning electron microscope and X‐ray diffraction were employed to investigate the dispersion of particles in the SR matrix. Moreover, the effect of morphology and surface chemical composition of particles on the thermal oxidative degradation of SR and the action mechanism were studied via measuring the mechanical properties and the average molecular weight between crosslinking points of the SR before and after aging, as well as utilizing thermogravimetric/infrared spectrometry. The results showed that rGO exhibited the largest exfoliation extent, few oxygen‐containing functional groups and better dispersion among these particles, causing the best thermal oxidative stability of rGO/SR nanocomposites, especially when its amount is 1 phr; incorporating rGO could increase the initial formation temperatures of pyrolysis products and decrease the concentrations of products from the oxidation and fracture of side groups of SR. POLYM. COMPOS., 39:1105–1115, 2018. © 2016 Society of Plastics Engineers

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The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Cited by 43 publications

References 43 publications

Flame retardancy for cotton cellulose treated withH₃PO₃

Flame retardancy for cotton cellulose treated withH₃PO₃

Flame‐retardant cyanate ester resin with suppressed toxic volatiles based on environmentally friendly halloysite nanotube/graphene oxide hybrid

The improved thermal oxidative stability of silicone rubber by incorporating reduced graphene oxide: Impact factors and action mechanism

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The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Cited by 43 publications

References 43 publications

Flame retardancy for cotton cellulose treated withH3PO3

Flame retardancy for cotton cellulose treated withH3PO3

Flame‐retardant cyanate ester resin with suppressed toxic volatiles based on environmentally friendly halloysite nanotube/graphene oxide hybrid

The improved thermal oxidative stability of silicone rubber by incorporating reduced graphene oxide: Impact factors and action mechanism

Contact Info

Product

Resources

About

Flame retardancy for cotton cellulose treated withH₃PO₃

Flame retardancy for cotton cellulose treated withH₃PO₃