Study on the Rheological Behavior of Neat PLA Chips and PLA Composites for Meltblowing Nonwovens

Abstract:

The PLA/tourmaline composites were prepared by co-extrusion of PLA chips and tourmaline fillers. Rheological behavior of PLA chips and PLA/tourmaline composites were analyzed using a capillary rheometer. Experimental results showed that the rheological curves complex viscosity of the PLA chips exhibited a non-Newtonian flow behaviour. Complex viscosity of the PLA chips decreased with the temperature increasing. A non-Newtonian flow behaviour was observed in all the PLA/tourmaline composites samples at lower shear rate. The complex viscosity of PLA blends increased with the input of tourmaline. The viscous flow activation energy of PLA/tourmaline blend melts decreased compared with that of neat PLA chips. Keyword: Rheological behavior; poly(lactic acid); tourmaline; meltblowing

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 123-126
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.123
• Online since: December 2012
• Authors: Bin Yu, Hui Sun, Jian Han, Peng Cheng Yu, Guo Ping Xu
• Keywords: Meltblowing, Poly(lactic acid) (PLA), Rheological Behavior, Tourmaline

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