Study of Na-Montmorillonite–Polyamide Fiber/Polypropylene Hybrid Composite Prepared by Reactive Melt Mixing

Kerakra, Samia; Bouhelal, S.; Ponçot, Marc

doi:10.1155/2017/3920524

Cited by 7 publications

(8 citation statements)

References 33 publications

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“…where

T_{m}

is the melting temperature of PP,

T_{m}^{o}

is the equilibrium melting temperature of PP,

σ_{e}

is the surface‐free energy of the polymer,

normalΔ H_{f}^{o}

is the standard enthalpy of melting, and

L_{c}

is the lamellar thickness. Literature values are as follows: of

normalΔ H_{f}^{o}

= 207.33 J/g,

σ_{e}

= (0.1 J/m 2 ), and

T_{m}^{o}

= 187.5°C is used for the calculation 45 . The influence of nanoparticles on the thickness of crystalline lamellae of PP was presented in Table 7.…”

Section: Resultsmentioning

confidence: 99%

“…T A B L E 5 Crystallinity ratio (X c %) obtained from differential scanning calorimetry and Raman spectroscopy (±1%) values are as follows: of ΔH o f = 207.33 J/g, σ e = (0.1 J/ m 2 ), and T o m = 187.5 C is used for the calculation. 45 The influence of nanoparticles on the thickness of crystalline lamellae of PP was presented in Table 7. Lamellar thickness is calculated from the onset, peak, and end temperature of the melting curve, and the results shows that the inclusion of nanofillers does not contribute to lamellar thickness.…”

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

See 1 more Smart Citation

Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

Bicy

Rouxel

Ponçot

et al. 2021

J of Applied Polymer Sci

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Microporous polypropylene (PP) nanocomposite membranes are in great demand in various fields such as energy harvesting, water purification, and other industrial applications. Thin films of PP/natural rubber (NR) blend nanocomposite have been prepared by melt mixing and the membranes are made porous by extracting the NR phase from the blend. The present study gives a better insight into the nanoparticle shape and localization‐tailored porous morphology of PP membrane. Thermodynamic prediction of nanofiller localization and its impact on morphology were studied. 2D clay platelets in PP matrix tune the morphology of the porous membrane into lamellar, whereas spherical nanofillers give elongated spherical pores. The localization of nanoparticles was observed using transmission electron microscope, which is also confirmed from theoretical prediction of localization of nanofillers with the help of interfacial energy and surface tension. Thermal studies reveal that nanofillers enhance the thermal stability of polymers. Mechanical studies reveal that nanoparticles improve the mechanical properties of the system. 2D platelet shaped‐nanofillers enhance the mechanical strength of the polymer up to 39%, which is higher than that obtained for 3D spherical nanofillers. Nanofiller shape and localization have a great influence in deciding the properties and porosity of the membrane.

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“…where

T_{m}

is the melting temperature of PP,

T_{m}^{o}

is the equilibrium melting temperature of PP,

σ_{e}

is the surface‐free energy of the polymer,

normalΔ H_{f}^{o}

is the standard enthalpy of melting, and

L_{c}

is the lamellar thickness. Literature values are as follows: of

normalΔ H_{f}^{o}

= 207.33 J/g,

σ_{e}

= (0.1 J/m 2 ), and

T_{m}^{o}

= 187.5°C is used for the calculation 45 . The influence of nanoparticles on the thickness of crystalline lamellae of PP was presented in Table 7.…”

Section: Resultsmentioning

confidence: 99%

Section: Differential Scanning Calorimetrymentioning

confidence: 99%

Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

Bicy

Rouxel

Ponçot

et al. 2021

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The following are the literary values: The values of ΔH o f = 207.33 J/g, σ e =0.1 J/m2, and T o m =187.5 C were used in the calculations. [19] Using the universal testing equipment Tinius Olsen, the effect of nanofillers on the mechanical quality of microporous PP was examined (ASTM-D-638 methodstrain from position). The dimensions of the samples were: 10 cm length, 1 cm width and ⁓35 μm thickness.…”

Section: Characterization Techniquesmentioning

confidence: 99%

“…The following are the literary values: The values of

Δ H_{f}^{o}

= 207.33 J/g,

σ_{normale}

=0.1 J/m2, and

T_{normalm}^{normalo}

=187.5°C were used in the calculations. [ 19 ]…”

Section: Characterization Techniquesmentioning

confidence: 99%

Polypropylene/silica nanocomposite membranes for lithium‐ion battery separator: Studies on interfacial tuning of pore structure, mechanical and thermal properties

Kottathodi,

Royaud,

Poncot

et al. 2023

SPE Polymers

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Energy storage and mobility industries use polypropylene (PP) nanocomposites. The energy storage applications of newly made microporous SiO2 filled, porous PP nanocomposites combining PP, natural rubber, and SiO2 nanoparticles then subsequently removing natural rubber from the nanocomposite were explored in this paper. SEM pictures showed how the pore morphology was altered by nanofillers. Mechanical tensile tests reveal that the SiO2 nanofiller enhances the mechanical properties of microporous polypropylene. XRD and DSC experiments have shown that SiO2 nanoparticles works as a nucleating agent but has no impact on the crystallinity of PP. The electrolyte absorption, porosity, ionic conductivity, wettability and charge–discharge performance were investigated for PP/SiO2 nanocomposite separator. SiO2 nanoparticles in the matrix have a significant impact on the wettability of PP membrane, since the presence of SiO2 nanoparticle reduces the contact angle from 24° to 15°. SiO2 filled PP membrane outperformed microporous PP and celgard separator in terms of electrolyte uptake (230%) and porosity (62%). In comparison to microporous PP, the PP/SiO2 membrane demonstrated a better ionic conductivity (5.9 × 10−4 S cm−1). Finally, Li/PP‐SiO2/LiFePO4 coin cells (2320 type) were fabricated and delivered a discharge capacity of 138 mAh g−1.

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“…As observed from the SEM micrograph, the fabricated composite blend shows a very rough surface that is represented by the black dotted ring of which we can predict the blending capabilities of PLA and PHA. 23,49,50 The red dotted ring in this image shows regions where intercalated MMT can blend with the polymer composite. Also, intercalated MMT particles cannot be visibly seen as particles, however, images taken in multiple regions of the composite let us visibly observe slightly darker (red dotted ring) regions that have been coated with gold to make it enhance visibility in these regions as intercalated MMT requires a higher contrast and resolution.…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Interface, thermal, and Fourier transform—infrared spectroscopy investigation on polylactic acid/polyhydroxyalkanoate composites with silane‐treated aluminum particles and intercalated montmorillonite inclusions for semiconductor devices

Shanmugasundram,

Jayamani,

Soon

2023

J of Applied Polymer Sci

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In this investigation, the dielectric properties of silane‐influenced aluminum conductive particles in polylactic acid, polyhydroxyalkanoates, and intercalated montmorillonite (MMT) composite were assessed for enhancing the dielectric constant, dielectric loss, and AC conductivities. Eight different sets of samples were fabricated with untreated and silane‐treated batches of biopolymer composites where the highest recorded dielectric constant was 3.98 at relaxation frequency of 10 kHz. One of the notable observations in the dielectric loss was with PLA/PHA/iMMT/Al (10 wt%) (silane‐treated) composites exhibited the lowest losses past relaxation frequencies. Furthermore, FT‐IR spectra were conducted on the samples to identify stretching and bonds created by silane and aluminum particles. The IR spectra confirm the formation of the SiOAl bond when treated with 3‐glycidyloxypropyl‐trimethoxysilane (GPTMS) solution and confirm the bond of AlOH hydroxyl bonds in the untreated composite samples. Other IR spectra information that was gathered would include carbonyl group stretching at 1750 cm−1 and absorption bands of hydroxy acids, between 3511 and 3640 cm−1, respectively. Scanning electron microscopy was performed on the sample to observe the formation of matrix cracks and exfoliation. A rough surface can be seen on PLA/PHA blends and the crystallization of these polymer blends regions can be vividly seen from the micrographs. Lastly, thermogravimetry analysis on the composite samples shows a predominant mass loss at 300°C before complete degradation and the notable composite with the lowest mass loss would be PLA/PHA/iMMT/Al (10 wt%) (ST) composite samples and with the inclusion of a constant 5 wt% organoclay MMT fillers imposed a high‐onset degradation temperature, which was remarkable for composites that were fabricated through standard hot‐press compression molding and cooling procedures.

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Study of Na-Montmorillonite–Polyamide Fiber/Polypropylene Hybrid Composite Prepared by Reactive Melt Mixing

Cited by 7 publications

References 33 publications

Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

Interfacial tuning and designer morphologies of microporous membranes based on polypropylene/natural rubber nanocomposites

Polypropylene/silica nanocomposite membranes for lithium‐ion battery separator: Studies on interfacial tuning of pore structure, mechanical and thermal properties

Interface, thermal, and Fourier transform—infrared spectroscopy investigation on polylactic acid/polyhydroxyalkanoate composites with silane‐treated aluminum particles and intercalated montmorillonite inclusions for semiconductor devices

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