Get access

Preparation and characterization of polylactide nanofibers via melt extrusion of polylactide/copolyester blends

Authors

  • Peng Liu,

    1. State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, People's Republic of China
    Search for more papers by this author
  • Keying Zhu,

    1. State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, People's Republic of China
    Search for more papers by this author
  • Yang Ouyang,

    1. State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, People's Republic of China
    Search for more papers by this author
  • Ru Xiao

    Corresponding author
    • State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, People's Republic of China
    Search for more papers by this author

Correspondence to: R. Xiao (E-mail: xiaoru@dhu.edu.cn)

ABSTRACT

In this article, polymer blends of polylactide (PLA) and co-polyester (co-PET) were prepared at various weight ratios of PLA/co-PET, such as 10/90, 20/80, 30/70, and 40/60, through a twin-screw extruder. The PLA nanofibers were fabricated by removal of the co-PET matrix in water at 80°C. The morphology development of PLA dispersed phase obtained from the three different sample connections and the die of the twin-screw extruder were investigated by Scanning Electron Microscopy (SEM). It was found that the uniformed PLA nanofibers with averaged diameters less than 500 nm were fabricated by the suitable processing parameters. The processing immiscibility and rheological behavior of PLA/co-PET blends were also studied by means of Differential Scanning Calorimeter (DSC) and Capillary Rheometer. The test of Fourier Transform Infrared spectroscopy (FTIR) demonstrated that the co-PET was removed clearly in water at 80°C. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2832–2838, 2013

Get access to the full text of this article

Ancillary