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200 nm) of calcium phosphate. The crystal size is on the order of 30 nm. Micropores could be introduced in each of the fibers by controlling the polymer molecular weight and the sol volume fraction. Such structures can have many potential uses in the repair and treatment of bone defects and in drug delivery.
doi:10.1016/j.carbpol.2006.06.010 
Copyright © 2006 Elsevier Ltd All rights reserved.
Fabrication and characterization of poly (vinyl alcohol)/chitosan blend nanofibers produced by electrospinning method
Received 17 April 2006;
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Abstract
A series of poly (vinyl alcohol) (PVA)/chitosan (CS) blend nanofibrous membranes with different weight ratio of PVA to CS were fabricated by electrospinning method. The morphology, diameter, and structure of electrospun nanofibers were investigated by scanning electron microscopy (SEM), fourier transform infrared (FT-IR), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). SEM images showed that the morphology and diameter of the nanofibers were mainly affected by concentration of the blend solution, weight ratio of the blend, respectively. FT-IR, XRD, and DSC demonstrated that there were strong intermolecular hydrogen bonds between the molecules of CS and PVA. The crystalline microstructure of the electrospun fibers was not well developed.
Keywords: Poly (vinyl alcohol)/chitosan blend; Nanofiber; Electrospinning
Article Outline
- 1. Introduction
- 2. Experimental
- 2.1. Materials
- 2.2. Electrospinning procedures
- 2.3. Film preparation
- 2.4. Measurement and characterization
- 3. Results and discussion
- 3.1. Effect of blend weight ratio
- 3.2. Effect of solution concentrations
- 3.3. FT-IR spectra
- 3.4. XRD spectra
- 3.5. DSC analysis
- 4. Conclusions
- References
