Investigation of Solution Rheology in Electrospinning of Ultra High Molecular Weight Polyethylene

Nayak, Prajesh; Ghosh, Anup K.; Bhatnagar, Naresh

doi:10.1007/s12221-021-0374-6

Cited by 20 publications

(25 citation statements)

References 43 publications

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“…Gel‐spinning technology has been applied to large‐scale manufacturing of UHMWPE fibers all over the world nowadays, and it can be subdivided into wet spinning process with paraffin oil as solvent and dry spinning process with decalin as solvent 11–13 . However, it is difficult to process UHMWPE because of its high molecular weight, high entanglement density and poor melt fluidity 14 . Therefore, the soluble homogeneity of UHMWPE in the solvent has a great impact on the subsequent processing, as well as the mechanical properties of its products.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13] However, it is difficult to process UHMWPE because of its high molecular weight, high entanglement density and poor melt fluidity. 14 Therefore, the soluble homogeneity of UHMWPE in the solvent has a great impact on the subsequent processing, as well as the mechanical properties of its products. UHMWPE is a non-polar semi-crystalline polymer, 15 and its dissolving process including swelling and dissolving is governed by temperature.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced tensile properties of ultra‐high molecular weight polyethylene fibers by solubility improvement with mixed solvents

Wang

et al. 2023

J of Applied Polymer Sci

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The tensile properties of ultra‐high molecular weight polyethylene (UHMWPE) fibers obtained from mixed solvents are addressed by virtue of improved solubility. In this work, olive oil (OO) was introduced as a poor solvent for the pre‐swelling of UHMWPE in decalin, and its mass percentage was intended to be 10, 20, 30, and 40 wt% of UHMWPE. Then UHMWPE fibers with high molecular weight retention and low entanglement were prepared with paraffin oil as spinning solvent by gel‐spinning and hot‐drawing. Unlike other samples, there is a more significant molecular chain disentanglement and higher molecular weight retention for UHMWPE fibers as OO addition is 20 wt%. Surprisingly, obtained UHMWPE fibers exhibit tensile strength up to 33.85 cN/dtex and tensile modulus of 1673.27 cN/dtex, with an increase of 24.0% and 32.3%, respectively, compared with that of UHMWPE fibers without decalin/OO pre‐swelling. Furthermore, the obtained UHMWPE fibers are accompanied by a marked improvement in melting temperature, crystallization and orientation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced tensile properties of ultra‐high molecular weight polyethylene fibers by solubility improvement with mixed solvents

Wang

et al. 2023

J of Applied Polymer Sci

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“…Moreover, it is important to notice that the range of functional polymer concentration for electrospinning will be correlated with the molecular weight (M w ) of the polymer, as higher M w increases chain entanglements and viscosity. 35 Supplemental Figure S3 (Supporting Info) shows the relation between optimized DMAC/acetone electrospinning solution concentration and PVDF molecular weight found in other studies. It clearly shows that the polymer concentration which leads to bead-free mats is inversely correlated with M w .…”

Section: Smentioning

confidence: 80%

“…Molecular weight, inner diameter of tip, temperature and relative humidity and overall electrospinning chamber geometry are not always reported in electrospinning studies, although they have been found to affect the morphology of the obtained fibers. [32][33][34][35] The variability in these factors results in inconstancy of the optimum values of typical electrospinning parameters (i.e. solution concentration and solvent ratio, voltage, tip-collector distance, and flow rate).…”

Section: Introductionmentioning

confidence: 99%

Poly(vinylidene fluoride) electrospun nonwovens morphology: Prediction and optimization of the size and number of beads on fibers through response surface methodology and machine learning regressions

Trupp

Cibils²,

Goyanes

2022

Journal of Industrial Textiles

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Electrospinning is one of the leading techniques for fiber development. Still, one of the biggest challenges of the technique is to control the nanofiber morphology without many trial-and-error tests. In this study, it is demonstrated that via design of experiments (DoE), response surface methodology (RSM) and machine learning regressions (MLR) it is possible to predict the beads-on-string size, size distribution and bead density in electrospun poly(vinylidene fluoride) (PVDF) mats with a small number of tests. PVDF concentration, dimethylacetamide/acetone ratio, tip-to-collector voltage and distance were the parameters considered for the design. The results show good agreement between the experimental and modeled data. It was found that concentration and solvent ratio play the main roles in minimizing bead size and number, distance tends to reduce them, and voltage does not play a significant role. As an evaluation of the potential of the method, bead-free fibers were obtained through the predicted parameter values. Comparison of the performance of the two methods is presented for the first time in electrospinning research. Response surface methodology resulted much faster, but MLR achieved a lower error and better generalization abilities. This approach and the availability of the MLR script used in this work may help other groups implement it in their research and find information hidden in the data while improving model prediction performance.

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“…At c * (presented by eq ), the polymer chains begin to interact and overlap without entangling. Thus, c * signifies the end of the dilute regime and onset of the semidilute unentangled regime. , c * ∼ 1 false[ η false] where [η] is the intrinsic viscosity of the solution.…”

Section: Rheology In Advanced Polymer-processing Operationsmentioning

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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Investigation of Solution Rheology in Electrospinning of Ultra High Molecular Weight Polyethylene

Cited by 20 publications

References 43 publications

Enhanced tensile properties of ultra‐high molecular weight polyethylene fibers by solubility improvement with mixed solvents

Enhanced tensile properties of ultra‐high molecular weight polyethylene fibers by solubility improvement with mixed solvents

Poly(vinylidene fluoride) electrospun nonwovens morphology: Prediction and optimization of the size and number of beads on fibers through response surface methodology and machine learning regressions

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

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