Title: PREPARING AND STRUCTURE OF A POROUS NANO-HA/CS/PVA COMPOSITE BY FREEZE-DRYING
Page Range: p.1-4
Author(s): Feng Wang; Enyan Guo
File size: 308K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 20
Issue No: No.1-2
Abstract
Novel tissue engineering scaffold material porous hydroxyapatite, with interconnected pores, allows tissue fluid circulation and provides nutrient for new bone. In the work, Nano-HA /CS/PVA composites were prepared through a co-precipitation method with (NH4)2HPO4, Ca(NO3)2.4H2O, chitosan(CS) and polyvinyl alcohol (PVA) as raw materials. Frozen with liquid nitrogen, and then the porous scaffolds were fabricated by freeze-drying. Fourier transform infrared spectroscopy (FT-IR) confirmed the presence of chemical bonds among HA, CS and PVA and were discussed. Scanning electron microscopy (SEM) analysis revealed that the composites have interconnected porous structures. 14 Refs.