Understanding the compatibility of Nitrocellulose with Polyester based Polyurethane binder

Touidjine, Sabri; Boulkadid, Moulai Karim; Belkhiri, Samir; Mezroua, Abderrahmane; Fertassi, Meriem Amina

doi:10.1080/07370652.2021.1942592

Cited by 20 publications

(11 citation statements)

References 53 publications

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“…18 Touidjine et al prepared polyurethane/NC blends and further proved their suitable application as solid propellants. 19 With this motivation, we selected NC for polymer blending with the PVC system. This research aims to prepare a new polymer blend from two extensively used thermoplastics PVC and NC by the solution casting method.…”

Section: Introductionmentioning

confidence: 99%

Study of the preparation and properties of polyvinyl chloride/nitrocellulose polymer blends

Jadhav

Joshi

Humbe

et al. 2022

Polymer International

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In this study, we prepared Polyvinyl chloride (PVC)/Nitrocellulose (NC) polymer blend by the solution casting technique. The structural properties and decreased interplanar spacing and crystalline nature of the PVC/NC blends were confirmed by an XRD technique. Basic chemical fingerprint regions of PVC/NC blends were confirmed by the Fourier transform IR method. Optical properties correlated with a decreased direct and indirect bandgap energy of PVC/NC were estimated using UV–visible spectra. They exhibited a shift in the absorption spectra towards the longer wavelength region due to process of charge transfer in the blend system. An increased microporous nature of the blends was demonstrated by SEM. Based on the Maxwell–Wagner model the dielectric constant and relative loss were found to have a maximum in the low frequency region which may be contributed by the polar nature of NC. We confirmed the hydrophilic nature of the PVC/NC blends due to the presence of hydroxyl groups by the goniometer technique. The thermophysical properties of the blends were measured by Lee's disc method. NC loading in the blend system increased the thermal conductivity from 0.12 to 0.18 W/(m.K). The Shore A softness test of the blends exhibited an 18% increase. We quantified structure, bandgap, morphology, and dielectric, surface and thermal properties as a function of NC blending. This new emerging blend may be a remedy for various engineering applications. © 2022 Society of Industrial Chemistry.

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Section: Introductionmentioning

confidence: 99%

Study of the preparation and properties of polyvinyl chloride/nitrocellulose polymer blends

Jadhav

Joshi

Humbe

et al. 2022

Polymer International

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“…An efficient method based on DSC data was used to investigate the thermal degradation kinetics of the analyzed samples and to offer useful data on the reaction kinetics of solid‐state degradation [50].…”

Section: Resultsmentioning

confidence: 99%

“…The kinetic parameters for non-isothermal analysis were obtained using several isoconversional kinetic methodologies, including Vyazovkin's nonlinear integral with compensating effect (VYA/CE), iterative Kissinger-Akahira-Sunose (It-KAS) and iterative Flynn-Wall-Ozawa (It-FWO). More details regarding the kinetic approaches employed can be found in a previous study [50].…”

Section: Kinetic Parametersmentioning

confidence: 99%

Thermal Behavior and Kinetics of Double Base Propellant Catalyzed with Green Graphene Iron Oxide Nanocomposite

Louafi

Boulkadid

Belgacemi

et al. 2022

Propellants Explo Pyrotec

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In this work, a green approach for the synthesis of graphene-iron oxide nanocomposite (GINC) was followed. FTIR, Raman, XRD and SEM analysis tools were all used to characterize the synthesized nanocomposite. Furthermore, the Differential Scanning Calorimetry (DSC) method was used to investigate the GINC's catalytic activity for the decomposition of a double base propellant (DBP). Kinetic characteristics for the thermal decomposition of DBP such as activation energy and frequency factor, were determined using iso-conversional approaches, including Vyazovkin's nonlinear integral with compensatory effect (VYA/CE), iterative Kissinger-Akahira-Sunose (It-KAS), and iterative Flynn-Wall-Ozawa (It-FWO). Based on the results obtained from the kinetic analysis, the introduction of GINC has reduced the activation energy of the pristine DBP (approximately 230 kJ/mol) by 40 kJ/mol, showing that this addition has good catalytic activity on the thermal degradation of DBP. Additionally, the results showed that the critical ignition temperature is augmented from 187.1 to 199.6 °C, when DBP is doped with 3 % GINC highlighting the fact that GINC enhanced the thermal safety of DBP.

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“…52 the reaction of hydroxyl-terminated (OH) polymers, such as HTPB, hydroxyl-terminated polyester homopolymer (HTPS), hydroxyl-terminated polyether (HTPE), and so forth, with isocyanate (NCO) groups. [54][55][56][57][58] However, the isocyanate curing agent can readily interact with hydroxyl, urea, water, urea, and amino groups in the PU system. The interaction between water and isocyanate results in the production of carbamate, which rapidly decomposes into carbon dioxide and ammonia.…”

Section: Gap/ptbp Copolymer Bindermentioning

confidence: 99%

Review on energetic copolymer binders for propulsion applications: Synthesis and properties

Touidjine

Boulkadid

Akbi

et al. 2023

Journal of Polymer Science

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This article aims to outline the current progress in the field of energetic copolymer binders for composite solid propellants (CSPs). Propellants, which are a type of energetic material, are used to generate thrust in rockets and missiles, and they are generally less sensitive than explosives. The common formulations of CSPs contain several different chemical compounds that are typically bound together by a polymeric matrix to form a continuous solid. The use of inert polymers, however, does not enhance the overall specific impulse of the propellant. Energetic copolymers have emerged as a compelling category of binders for CSPs in recent years, offering potential advantages over traditional binders such as improved performance, enhanced safety, and increased manufacturing efficiency. The paper reviews the various types of energetic copolymer binders that have been developed, their potential advantages and drawbacks, and the current challenges and opportunities in the field. It suggests directions for future research and development and aims to provide a useful resource for researchers and practitioners interested in the use of energetic copolymer binders toward CSPs.

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Understanding the compatibility of Nitrocellulose with Polyester based Polyurethane binder

Cited by 20 publications

References 53 publications

Study of the preparation and properties of polyvinyl chloride/nitrocellulose polymer blends

Study of the preparation and properties of polyvinyl chloride/nitrocellulose polymer blends

Thermal Behavior and Kinetics of Double Base Propellant Catalyzed with Green Graphene Iron Oxide Nanocomposite

Review on energetic copolymer binders for propulsion applications: Synthesis and properties

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