UHMWPE/organoclay nanocomposites fabricated by melt intercalation under continuous elongational flow: Dispersion, thermal behaviors and mechanical properties

Lin, Wangyang; Hou, Aolin; Feng, Yi; Yang, Zhitao; Qu, Jinping

doi:10.1002/pen.24964

Cited by 14 publications

(8 citation statements)

References 61 publications

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“…They found that the dispersion efficiency of the elongational flow field for nanoparticles was several times than that of the shear flow field at the same deformation rate. The elongational flow has a great effect on the dispersion and intercalation of MMT in polymer matrix, which has been demonstrated previously by many researchers 25–29 …”

Section: Introductionmentioning

confidence: 57%

Phase transformation and dielectric properties of polyvinylidene fluoride/organic‐montmorillonite nanocomposites fabricated under elongational flow field

Tong

Huang

et al. 2021

J of Applied Polymer Sci

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Compounding montmorillonite (MMT) with polymorphic polyvinylidene fluoride (PVDF) by melt intercalation method can induce the crystal phase transformation of PVDF, which is of great significance to obtain the electroactive PVDF. In this research, PVDF/Organic‐Montmorillonite (OMMT) nanocomposites were prepared by a novel vane mixer, which was dominated by the elongational flow field in the whole plasticizing. The dispersion of OMMT, the crystal phase transformation of PVDF, and the resulting properties of nanocomposites were experimentally studied. The results of TEM and WAXD evidenced that homogeneous dispersion and desirable intercalation structure of OMMT were formed in the PVDF matrix under the effect of the elongational flow field. WAXD, FTIR, and DSC tests demonstrated that large amounts of β‐phase of PVDF was formed due to the introduction of OMMT. The intercalation structure of OMMT and the crystal transformation of PVDF increased the dielectric constant and piezoelectric properties of nanocomposites, while the dielectric loss still maintained at a very low level. Finally, the effect of unique ''double‐layer peeling'' mechanism of OMMT on the properties of nanocomposites was discussed.

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Section: Introductionmentioning

confidence: 57%

Phase transformation and dielectric properties of polyvinylidene fluoride/organic‐montmorillonite nanocomposites fabricated under elongational flow field

Tong

Huang

et al. 2021

J of Applied Polymer Sci

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“…Therefore, the researchers have demonstrated that a polymer nanocomposite produced by melt processing under an elongational flow field exhibits superior mechanical properties because of not only superior dispersion qualities of the nanoparticles but also lower degradation of shear-sensitive polymers. Researchers have reported the superior efficacy of elongational flow field in the mixing of other nanofillers, such as nanoclay − and carbon nanotubes, , in various polymers.…”

Section: Role Of Rheology In the Development Of The Morphologies Of P...mentioning

confidence: 99%

Role of Rheology in Morphology Development and Advanced Processing of Thermoplastic Polymer Materials: A Review

Banerjee

Ray

2023

ACS Omega

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This review presents fundamental knowledge and recent advances pertaining to research on the role of rheology in polymer processing, highlights the knowledge gap between the function of rheology in various processing operations and the importance of rheology in the development, characterization, and assessment of the morphologies of polymeric materials, and offers ideas for enhancing the processabilities of polymeric materials in advanced processing operations. Rheology plays a crucial role in the morphological evolution of polymer blends and composites, influencing the type of morphology in the case of blends and the quality of dispersion in the cases of both blends and composites. The rheological characteristics of multiphase polymeric materials provide valuable information on the morphologies of these materials, thereby rendering rheology an important tool for morphological assessment. Although rheology extensively affects the processabilities of polymeric materials in all processing operations, this review focuses on the roles of rheology in film blowing, electrospinning, centrifugal jet spinning, and the three-dimensional printing of polymeric materials, which are advanced processing operations that have gained significant research interest. This review offers a comprehensive overview of the fundamentals of morphology development and the aforementioned processing techniques; moreover, it covers all vital aspects related to the tailoring of the rheological characteristics of polymeric materials for achieving superior morphologies and high processabilities of these materials in advanced processing operations. Thus, this article provides a direction for future advancements in polymer processing. Furthermore, the superiority of elongational flow over shear flow in enhancing the quality of dispersion in multiphase polymeric materials and the role of extensional rheology in the advanced processing operations of these materials, which have rarely been discussed in previous reviews, have been critically analyzed in this review. In summary, this article offers new insights into the use of rheology in material and product development during advanced polymer-processing operations.

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“…Polymer/filler composites prepared by ERE based on elongational flow have attracted the attention of many researchers. [20][21][22] It has been reported that the elongational flow has many advantages in polymer processing, including a short thermo-mechanical history, wide adaptability, and outstanding miscibility. [23][24][25][26][27] 2.3 | Sample preparation…”

Section: Experimental Devicementioning

confidence: 99%

High orientation structure in UHMWPE/BN composites continuously obtained by elongational flow field leading to superior thermal conductivity

Lin

Yin

et al. 2022

J of Applied Polymer Sci

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Ultra‐high‐molecular‐weight polyethylene/boron nitride (BN) composites have been continuously prepared successfully by eccentric rotor extruder (ERE) based on elongational flow. Optical microscopy (OM), scanning electron microscopy (SEM), x‐ray diffraction (XRD), thermal conductivity test, heat‐dissipation test, and tensile test were performed to investigate the orientation structure, thermal conductivity, mechanical properties, and insulation properties. The orientation factor and thermal conductivity of the composites prepared by ERE were 79.3 and 3.75 W·m−1·K−1, which were much higher than those of composites prepared with a torque mixer (14.7 and 2.73 W·m−1·K−1, respectively). OM and SEM showed that the BN sheets were in contact inside the composites and formed an efficient thermal conductivity network. Besides, the composites prepared by ERE had satisfactory mechanical and insulation properties (>1013 Ω·cm). This study provides experimental and theoretical guidance for industrial preparation of polymer/layered‐filler functional composites.

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UHMWPE/organoclay nanocomposites fabricated by melt intercalation under continuous elongational flow: Dispersion, thermal behaviors and mechanical properties

Cited by 14 publications

References 61 publications

Phase transformation and dielectric properties of polyvinylidene fluoride/organic‐montmorillonite nanocomposites fabricated under elongational flow field

Phase transformation and dielectric properties of polyvinylidene fluoride/organic‐montmorillonite nanocomposites fabricated under elongational flow field

Role of Rheology in Morphology Development and Advanced Processing of Thermoplastic Polymer Materials: A Review

High orientation structure in UHMWPE/BN composites continuously obtained by elongational flow field leading to superior thermal conductivity

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