Interaction and thermal studies on graphene oxide in NC/DEGDN/GO nanocomposites

Yahya, Prima Kharisma Indra; Moniruzzaman, Mohammed; Gill, Philip P.

doi:10.1039/c9ra07717k

Cited by 14 publications

(8 citation statements)

References 35 publications

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“…Further, the surface roughness analysis of NC surfaces during functionalization was studied using atomic force microscopy (Figure ). As observed from the AFM analysis, the pristine NC surface showed porous surface morphology with high surface roughness values (99.1 nm) . Similarly the Azide-NC 1 surface provided the same surface topographic structure and did not alter much in the surface roughness (111.4 nm) after silane functionalization.…”

Section: Resultsmentioning

confidence: 65%

“…As observed from the AFM analysis, the pristine NC surface showed porous surface morphology with high surface roughness values (99.1 nm). 56 Similarly the Azide-NC 1 surface provided the same surface topographic were analyzed by fluorescence microscopy with 40× magnification under 365 nm excitation wavelength (Figure S14). As observed from Figure S14, the pristine NC surface emitted green color emission with porous morphology in line with the observations reported earlier.…”

Section: Surface Wettability Analysis By Contact Angle Measurementmentioning

confidence: 99%

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Functionalization of Nitrocellulose Film by AB-Type Click Polymerization: Methods and Property Enhancements

Ramar

Samanta

2022

ACS Appl. Polym. Mater.

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Nitrocellulose (NC), predominantly used in propellants and purifying membranes, has further gained attention recently because of its application potential in flexible solar cells, molecular electronic devices, biochemical processes, and leather coatings. For the diversification of application areas of nitrocellulose-based materials, some of the inherent properties like flexibility, transparency, hydrophobicity, stability, heat of denitration, etc., require improvements. As presented in this paper, most of those properties were found to be substantially enhanced after the functionalization of nitrocellulose surfaces by a unique AB-type click polymerization, attributed to changes in chemical functionality, crystallinity, morphology, etc., as observed from X-ray diffraction (XRD), field-emission scanning electron microscopy, atomic force microscopy (AFM), and small-angle X-ray scattering (SAXS) analyses. Unlike conventional AABB-type click polymerization, herein, both azide and alkyne functional groups have been incorporated in the same monomer for better efficacy, where AB-type click polymerization took place in the presence of azide-functionalized nitrocellulose. This is a typical graft-through approach, where polymerization took place both in solution as well as on surfaces, providing flexibility of characterization in both states for the clear-cut evidence of the success of this typical polymerization as well as immobilization, as studied by solution-state as well as solid-state nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS), and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The material was used as a hydrophobic/superhydrophobic coating for leather surfaces.

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Section: Resultsmentioning

confidence: 65%

Section: Surface Wettability Analysis By Contact Angle Measurementmentioning

confidence: 99%

Functionalization of Nitrocellulose Film by AB-Type Click Polymerization: Methods and Property Enhancements

Ramar

Samanta

2022

ACS Appl. Polym. Mater.

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“…The preparation method for DEGDN was inspired by the study of Yahya et al, with some modifications [9]. Briefly, the sulfonitric acid was prepared by dropwise addition of nitric acid (8 mL, 99%) to sulfuric acid (8 mL, 98%).…”

Section: Preparation Of Degdn Plasticizermentioning

confidence: 99%

“…Broadly, an appropriate plasticizer should display acceptable sensitivity, compatibility with other components, suitable melting point, and good density [6]. Nonetheless, nitroglycerine, the most largely employed energetic plasticizer, suffers from various problems, including sensitivity to friction and impact, low oxygen balance (3.5%), reduced thermal stability, and migratory issues [7][8][9]. To address the abovementioned issues associated with traditional NG reliance, several emergent plasticizers comprising DEGDN and EGDN are revealed as promising candidates to replace NG, owing to their inherent characteristics such as improved participation and wetting features that lead to softer boundaries at NC interfaces, thus decreasing the sensitivity of the energetic formulation.…”

Section: Introductionmentioning

confidence: 99%

“…In one research paper, Yunlu Li et al [6] mentioned that the introduction of hydrogen bond functional groups such as -NH 2 , -CH 3, or other functions into energetic compounds would enhance their safety. Therefore, the use of DEGDN, which forms homogenous matrices with NC promoted by the electrostatic N-O interactions and the hydrogen bond network, has actually attracted much attention as a prominent alternative plasticizer in energetic formulations [8,9]. However, such propellant formulations (NC-DEGDN) demonstrate reduced energetic performance due to their low oxygen balance [10].…”

Section: Introductionmentioning

confidence: 99%

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Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

et al. 2022

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This research work aimed to elaborate on a new modified double-base propellant containing nitrocellulose (NC), ammonium nitrate (AN), and diethylene glycol dinitrate (DEGDN). The developed AN/NC-DEGDN formulation was successfully obtained through a casting process and fully characterized in terms of its chemical structure, morphological features, and thermal behavior. Beforehand, theoretical calculation by the CEA-NASA program was applied to select the optimal composition of the formulation. Experimental findings demonstrated the homogenous dispersion of AN oxidizer in the NC-DEGDN matrix without alteration of their molecular structures. The catalytic influence of AN on the thermal decomposition behavior of NC-DEGDN film was also elucidated by thermal analyses. When AN was incorporated into the formulation, the decomposition peak temperatures for the different decomposition processes were shifted toward lower temperatures, while the total enthalpy of decomposition increased by around 1272.24 J/g. In addition, the kinetics of the thermal decomposition of the developed modified double base propellant were investigated using DSC results coupled with model kinetic approaches. It was found that the addition of AN decreases the activation energy of nitrate esters from 134.5 kJ/mol to 118.84 kJ/mol, providing evidence for its excellent catalytic effect. Overall, this investigation could serve as a reference for developing future generation of modified double-base propellants.

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Tuning the micro‐structure, laser ignition, and isovolumetric burning performance of nitrocellulose propellant via incorporation of graphene oxide

et al. 2023

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Nanoscale recombination between carbon nanomaterials (CNs) and polymers has been proposed for a variety of industrial and scientific applications.Composite energetic materials consisting of CNs with novel laser ignition property and tunable combustion performance have attracted people's attention. Here, reported is the novel manufacturing process of uniform nitrocellulose (NC)/graphene oxide (GO) nanocomposite propellant and the microstructure, laser ignition and isovolumetric burning features of the propellants introduced by GO. The results of microstructure tests indicated that GO (0.25-2 wt%) was stripped and dispersed homogeneously and dense nanocomposite

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Interaction and thermal studies on graphene oxide in NC/DEGDN/GO nanocomposites

Abstract: Before considering the use of graphene oxide (GO) in nitrate ester-based materials for improved safety and performance its interaction, compatibility, and dispersion with the host matrices needs to be well understood.

Cited by 14 publications

References 35 publications

Functionalization of Nitrocellulose Film by AB-Type Click Polymerization: Methods and Property Enhancements

Functionalization of Nitrocellulose Film by AB-Type Click Polymerization: Methods and Property Enhancements

Towards Investigating the Effect of Ammonium Nitrate on the Characteristics and Thermal Decomposition Behavior of Energetic Double Base NC/DEGDN Composite

Tuning the micro‐structure, laser ignition, and isovolumetric burning performance of nitrocellulose propellant via incorporation of graphene oxide

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