Get access

Preparation of porous electro-spun UPM fibers via photocrosslinking

Authors

  • Liu Jun,

    1. State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    Search for more papers by this author
  • Yu Zhang,

    Corresponding author
    1. State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    • State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    Search for more papers by this author
  • Yu Hao,

    1. State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    Search for more papers by this author
  • Long Cheng,

    1. State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    Search for more papers by this author
  • Zhang. J. J.

    1. State Key Laboratory for Modification of Chemical Fibers and Polymer, Materials, College of Material Science and Engineering, Donghua University, Shanghai 200051, People's Republic of China
    Search for more papers by this author

Abstract

In this study, a new method of preparing porous ultra-fine fibers via photocrosslinking was developed. Ultra-fine unsaturated polyester macromonomor (UPM)/poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (UPM/ PHBV) blend fibers were electrospun and then the UPM was photocrosslinked by UV irradiation. Different ratios between UPM, PHBV and solvent were tested and the relationship between weight percentage of solutions and diameter of fibers was discussed. Through the test of Tg and Tm we found that UPM and PHBV were immiscible and the phase separation proceeded during the electrospinning. The photocrosslinking time was controlled strictly and the best reaction time can't exceed more than 10 min. After photocrosslinking of UPM, PHBV was extracted from the blend fibers with chloroform. The morphology of the fiber was observed through SEM and fibers were not collapsed during the extracted processing. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009

Ancillary