Electrospinning of Octenylsuccinylated Starch-Pullulan Nanofibers from Aqueous Dispersions

We aimed to develop a greener process for dry-electrospinning food-grade modified starch through the elimination of organic solvents. The rheological properties and electrospinnability of aqueous dispersions of commercial octenylsuccinylated (OS) starches with various molecular weight (Mw) were investigated, yet only nanofibers with beads or defects could be obtained from OS starch with the highest Mw, i.e., Purity Gum@ Ultra (PGU). Further improvement in the fiber morphology was achieved by adding pullulan (PUL) as a minor component in the spinning dope. Smooth, continuous, and bead-free nanofibers (147-250 nm) were obtained from the PGU-PUL dispersions. Shown on an electrospinnability map, the successful electrospinning of 12%, 15%, and 20% (w/v) aqueous PGU dispersions required a minimum addition of 6%, 5%, and 3% (w/v) of PUL, respectively. The addition of PUL contributed to establishing sufficient molecular entanglement for electrospinning. This study provides a promising green process to produce starch-based nanofibers for use in various applications, e.g., drug delivery, wound dressing, and tissue engineering.

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Work Title Electrospinning of Octenylsuccinylated Starch-Pullulan Nanofibers from Aqueous Dispersions
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Open Access
Creators
  1. Songnan Li
  2. Lingyan Kong
  3. Gregory R. Ziegler
Keyword
  1. Modified starch
  2. Octenylsuccinylated starch
  3. Pullulan
  4. Rheology
  5. Electrospinning
  6. Nanofiber
License CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives)
Work Type Article
Publisher
  1. Carbohydrate Polymers
Publication Date April 15, 2021
Publisher Identifier (DOI)
  1. https://doi.org/10.1016/j.carbpol.2020.116933
Deposited February 17, 2023

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  • Created
  • Added 1-s2.0-S0144861720311061-am.pdf
  • Added Creator Songnan Li
  • Added Creator Lingyan Kong
  • Added Creator Gregory R. Ziegler
  • Published
  • Updated Keyword Show Changes
    Keyword
    • Modified starch, Octenylsuccinylated starch, Pullulan, Rheology, Electrospinning, Nanofiber