Electrospun Poly(ϵ-caprolactone)/Polyhedral Oligomeric Silsesquioxane-Based Copolymer Blends: Evolution of Fiber Internal Structures

Adam J.P. Bauer, Yitian Wu, Bingbing Li

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

This study reports the structural transition of electrospun poly(ϵ-caprolactone) (PCL)/poly[(propylmethacryl-heptaisobutyl-polyhedral oligomeric silsesquioxane)-co-(methyl methacrylate)] (POSS-MMA) blends, from PCL-rich fibers, to bicontinuous PCL core/POSS-MMA shell fibers, to POSS-MMA-rich fibers with a discontinuous PCL inner phase. A ternary phase diagram depicting the electrospinnability of PCL/POSS-MMA solutions is constructed by evaluating the morphological features of fibers electrospun from solutions with various concentrations and PCL/POSS-MMA blend ratios. X-ray diffraction, Raman spectroscopy, and differential scanning calorimetry are further used to characterize the electrospun PCL/POSS-MMA hybrid fibers. These physicochemical characterization results are thoroughly discussed to understand the internal structures of the hybrid fibers, which are directly correlated to the phase separation behavior of the electrospun solutions. The current study provides further insight into the complex phase behavior of POSS-copolymer-based systems, which hold great potential for a broad spectrum of biomedical applications.

Original languageEnglish
Pages (from-to)705-716
Number of pages12
JournalMacromolecular Bioscience
Volume16
Issue number5
DOIs
StatePublished - May 2016

Keywords

  • POSS-MMA copolymer
  • electrospun fibers
  • poly(ϵ-caprolactone)

Fingerprint

Dive into the research topics of 'Electrospun Poly(ϵ-caprolactone)/Polyhedral Oligomeric Silsesquioxane-Based Copolymer Blends: Evolution of Fiber Internal Structures'. Together they form a unique fingerprint.

Cite this