# PREPARING AND STRUCTURE OF A POROUS NANO-HA/CS/PVA COMPOSITE BY FREEZE-DRYING

> 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 Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc Volume: 20 Issue...

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Published: 2012-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**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
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc20-1-2&JournalID=101530&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 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.

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