Authors Tran, N. H. A. ; Brünig, H. ; Auf der Landwehr, M. ; Heinrich, G.
Title Controlling micro- and nanofibrillar morphology of polymer blends in low-speed melt spinning process: III. Fibrillation mechanism of PLA/PVA blends along the spinline
Date 15.12.2016
Number 50465
Abstract The effects of spinning conditions on the fibrillation process of poly(lactic acid) (PLA) and poly(vinyl alcohol) (PVA) polymer blends in an elongational flow within the fiber formation zone are systematically and thoroughly investigated. By considering the relationship between the changes in filament parameters with the focus on the maximum axial strain rate (ASR) and tensile stress at maximum ASR and the morphological evolution of the dispersed PLA phase along the spinline, the fibrillation process from rod-like to nanofibrillar structures of the dispersed PLA phase in a binary blend with PVA matrix is elucidated. The final morphology of the dispersed PLA phase in PLA/PVA blends is controlled by the changes in the spinning conditions. The lengths and diameters of the PLA fibrils are caused not only by the deformation of their initial sizes but also by the combination of the deformation, coalescence, and break-up process. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44259.
Publisher Journal of Applied Polymer Science
Citation Journal of Applied Polymer Science 133 (2016) Art.No. 44259

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