Composition and compatibilization induced morphology alteration in PVDF/LLDPE blends: correlation between rheology and morphology

Oskooie, A. Jameie; Aghjeh, Mir Karim Razavi; Rafeie, Omid; Tavakoli, Akram

doi:10.1007/s10965-017-1183-x

Cited by 11 publications

(8 citation statements)

References 31 publications

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“…However, high cost and low production volume of this polymer are its drawbacks. Blending of the PVDF with a suitable polymer such as PE can be an effective strategy to overcome these drawbacks . The blends of PVDF/PE and particularly their conductive nanocomposites could find interesting applications in micro‐electromechanical devices and high‐charge storage capacitors, as stated in our previous work .…”

Section: Introductionmentioning

confidence: 82%

“…A strategy of reducing the filler content in conductive PE/PVDF blends was the main objective of the present work. The PVDF combines excellent chemical and thermal resistance, high mechanical strength and dielectric permittivity and unique pyro and piezo‐electric properties . However, high cost and low production volume of this polymer are its drawbacks.…”

Section: Introductionmentioning

confidence: 99%

“…showed that the interfacial interaction between the PVDF and LDPE phases and consequently the electrical properties of their blends improved in the presence of maleic anhydride grafted low density polyethylene (LDPE‐ g ‐MA) as an interfacial agent. In our previous work the rheology and morphology of the PVDF/PE blends, with and without PE‐ g ‐MA, were studied in detail over a wide composition range and the compositions with co‐continuous morphology were determined.…”

Section: Introductionmentioning

confidence: 99%

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Conductive poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites: Relationship between rheology, morphology, and electrical conductivity

Rafeie

Aghjeh

Tavakoli

et al. 2018

J of Applied Polymer Sci

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Relationship between rheology, morphology, and electrical conductivity of the poly(vinylidene fluoride)/polyethylene/graphene nano-platelets ternary system (PVDF/PE/GnP) were investigated. All the blend nanocomposites were prepared via a two-step melt mixing method. GnP (0.75 and 1.5 wt %) was first compounded with PVDF and then the resulted premixtuers were melt mixed with PE to achieve the desired compositions. The corresponding reference nanocomposites and filler-less blends were also prepared. Effect of an interfacial agent (PEMA; maleic anhydride grafted polyethylene) was also studied in this work. The results of rheological analysis in conjunction with the Raman spectroscopy experiments revealed that GnP had higher affinity to PVDF than PE, which in turn led to creation of conductive networks of GnP (1.5 wt %) in PVDF matrix exhibiting the electrical conductivity of about 10 22 (S/cm). Double percolated micro-structure was predicted for the PE/PVDF 40/60 (wt/wt) blend containing low GnP content (0.9 wt %) and confirmed via direct electron microscopy and conductivity analysis. Using 5 wt % of the PEMA reduced the conductivity to 10 25 (S/cm) and further increase in PEMA content to 10 wt % led to non-conductive characteristics. The latter was attributed to the migration of GnP from the PVDF phase to PE/PEMA phase and hence disturbance of double percolated micro-structure. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46333.

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Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Conductive poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites: Relationship between rheology, morphology, and electrical conductivity

Rafeie

Aghjeh

Tavakoli

et al. 2018

J of Applied Polymer Sci

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“…indicates a co‐continuous morphology for PE/PVDF 40/60 neat blend. As it was presented and discussed in previous works, the real morphology of this sample is “phase within a phase with in a phase” microstructure, in which both the PVDF and PE phases are continuous and there are some dispersed spherical PE and PVDF droplets in continuous PVDF and PE phases, respectively. The SEM image of the PE/PVDF (1.5 GnP) 40/60 blend‐nanocomposite ( ) also showed a typical co‐continuous morphology similar to its filler‐less reference blend.…”

Section: Resultsmentioning

confidence: 75%

“…Blending of two or more polymers and preparing of the polymer nanocomposites are two effective and well‐known methods in modification of polymeric materials . In recent decade, special attention has been paid on polymeric blend‐nanocomposites as these systems benefit the advantages of both polymer blends and polymer nanocomposites, simultaneously .…”

Section: Introductionmentioning

confidence: 99%

Study on crystalline structure of poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites

et al. 2019

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Effect of graphene nano-platelets (GnP) on the crystalline structure of poly(vinylidene fluoride)/polyethylene (PVDF/PE) blends was studied. The PVDF/GnP were melt compounded with PE and/or PE/PE-g-MA mixture to obtain the desired compositions. Alteration in polymorphism of the PVDF component in the blends and in the presence of GnP, was evaluated employing different analyses. The flow-induced crystallization experiments were conducted under oscillating rheometry at vicinity of crystallization temperature of the PVDF. The results of XRD and FTIR analysis indicated that the charge-transfer C F bonding interaction between the PVDF chains and basal plane of GnP layers led to alteration of polymorphism of PVDF from α form to α-, γ-, and β-phase crystals. Selective localization of the GnP in PVDF component increased the C F bonding interaction and decreased the hydrogen bonding between PVDF and PE chains, respectively. In the presence of PE-g-MA, the hydrogen bonding promoted and the C F bonding interaction decreased leading to predominance of the α-form crystal formation in the PVDF phase. While the GnP acted as nucleating agent in PVDF component under quiescent conditions, it had negative effect on row nuclei under flow conditions. The structures originated from row-nuclei and GnP surfaces, led to formation of "shish-kebab" and "oriented lamella" morphologies, respectively.

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The effect of filler localization on morphology and thermal conductivity of the polyamide/cyclic olefin copolymer blends filled with boron nitride

et al. 2018

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Composition and compatibilization induced morphology alteration in PVDF/LLDPE blends: correlation between rheology and morphology

Cited by 11 publications

References 31 publications

Conductive poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites: Relationship between rheology, morphology, and electrical conductivity

Conductive poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites: Relationship between rheology, morphology, and electrical conductivity

Study on crystalline structure of poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites

The effect of filler localization on morphology and thermal conductivity of the polyamide/cyclic olefin copolymer blends filled with boron nitride

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