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


Vol. 23,  No. 1, pp. 48-57, Jan.  2022
10.1007/s12221-021-0374-6


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  Abstract

Nano-micron size fiber formation of UHMWPE (ultra-high molecular weight polyethylene) can be carried out by a high temperature (130 oC) electrospinning method. In this work, the effect of solution parameters on fiber formation by the electrospinning method is discussed. Two different grades of UHMWPE having a molecular weight (Mw) of 2.21 million g/ mole (UM2.21) and 4.43 million g/mole (UM4.43) were chosen for the analysis. The solution properties of UHMWPE were investigated via rheology, which allowed the identification of the entanglement concentration before conducting the electrospinning process. The entanglement concentration (ce) for UM2.21 was 1.5 wt.%, while that for UM4.43 was 0.8 wt.%, respectively. The concentration exponent in semi dilute unentangled, and semi dilute entangled regimes was 1.23 and 2.59 for UM2.21 and 0.45 and 2.57 for UM4.43, respectively, in-line with de-Gennes셲 scaling theory. SEM of the electrospun product revealed that defect-free smooth fiber morphology could only be obtained when the concentration of the solution is around 1.5-2.5 times the entanglement concentration.

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  Cite this article

[IEEE Style]

P. Nayak, A. K. Ghosh, N. Bhatnagar, "Investigation of Solution Rheology in Electrospinning of Ultra High Molecular Weight Polyethylene," Fibers and Polymers, vol. 23, no. 1, pp. 48-57, 2022. DOI: 10.1007/s12221-021-0374-6.

[ACM Style]

Prajesh Nayak, Anup K. Ghosh, and Naresh Bhatnagar. 2022. Investigation of Solution Rheology in Electrospinning of Ultra High Molecular Weight Polyethylene. Fibers and Polymers, 23, 1, (2022), 48-57. DOI: 10.1007/s12221-021-0374-6.

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