Article
  • Characterization and Release Behavior of Polymersomes of PEG-Poly(fumaric-sebacic acids)-PEG Triblock Copolymer in Aqueous Solution
  • Pourhosseini PS, Saboury AA, Najafi F, Divsalar A, Sarbolouki MN
  • PEG-Poly(fumaric-sebacic acids)-PEG 삼중 블록 공중합체로 수용액에서 만들어진 폴리머솜의 분석과 방출특성
  • Pourhosseini PS, Saboury AA, Najafi F, Divsalar A, Sarbolouki MN
Abstract
Polymersomes made of biodegradable triblock copolymers based on poly(fumaric acid-co-sebacoyl chloride)/PEG (PEG-co-P(FA/SC)-co-PEG) were prepared and studied in aqueous solutions. TEM confirmed the formation of vesicles in aqueous media. Aggregation behavior of the copolymers was studied by fluorescence spectroscopy of 8-anilino-1-naphthalenesulfonic acid, and the critical aggregation concentration (c.a.c.) of the copolymer was found to be ~26.2 μM indicating desirable stability of the vesicles. Dynamic light scattering revealed that the size of the vesicles was distributed within the range of 170-270 nm. Turbidity measurements confirmed the relative short-term stability of the polymersomes. Carboxyfluorescein, a hydrophilic compound, was simply encapsulated in the vesicles during polymersome preparation. The release of encapsulant from the polymersomes at 25 and 37 oC lasted about 3 weeks, and the rate of release followed a first-order kinetics. The release is speculated to be primarily carried out through diffusion. These results confirm that these polymersomes are promising as controlled-release carriers of various drugs.

Keywords: block copolymer; dispersion; particle size distribution; critical aggregation concentration.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2013; 37(3): 294-301

    Published online May 25, 2013

  • 10.7317/pk.
  • Received on Sep 20, 2012
  • Revised on Nov 30, -0001
  • Accepted on Dec 6, 2012

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