Swelling characterization of poly (vinyl alcohol) hydrogel for prosthetic intervertebral disc nucleus.
- Author:
Yong LI
1
;
Jin GAO
;
Guoquan LIU
;
Zhengqiu GU
;
Yuanzheng MA
;
Haibin XUE
Author Information
1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- Publication Type:Journal Article
- MeSH:
Biocompatible Materials;
chemistry;
Hydrogels;
Hydrogen-Ion Concentration;
Implants, Experimental;
Intervertebral Disc;
Polyvinyl Alcohol;
chemistry;
Prostheses and Implants;
standards
- From:
Journal of Biomedical Engineering
2005;22(5):995-998
- CountryChina
- Language:Chinese
-
Abstract:
In this study the poly(vinyl alcohol)(PVA) hydrogel elastomer was prepared by freezing-thawing method. The influences of percentage of poly (vinyl alcohol) in hydrogel, pH of solution and swelling temperature upon the swelling characteristic of PVA-hydrogel prosthetic nucleus material were studied. Its micropores were observed using SEM, and the swelling dynamics was further discussed. The experimental results showed that the poly (vinyl alcohol) hydrogel was a kind of network with a lot of micropores, the pore size was related with the PVA content. The maximum swelling ratio decreases when the percentage of PVA in hydrogel, the pH of solution and the swelling temperature were enhanced. The swelling process was described by the equation of swelling dynamics equation. The swelling rate was greatly influenced by the PVA content, the pH of solution and the dimension of hydrogel sample.
