Structure and properties of ionic PVA sponges
- VernacularTitle:离子型聚乙烯醇海绵的结构及性能
- Author:
Ruihuan SUN
;
Lijiang MAO
;
Yuanjie HU
;
Ying ZHANG
;
Qing WANG
;
Dongxu PIAO
- Publication Type:Journal Article
- Keywords:
ionic polyvinyl alcohol sponges, water-absorption, three dimentional porous network, cataract-extraction
- From:
Chinese Journal of Rehabilitation Theory and Practice
2000;6(2):56-58
- CountryChina
- Language:Chinese
-
Abstract:
A new kind of medical sponges,ionic polyvinyl alcohol sponges(i-PVA sponges)were prepared by surface-grafting of acrylic acid onto acetal-PVA sponges.i-PVA sponges obtained show excellent hydrophilicity and water-absorption.The i-PVA sponges are three dimentional porous network.Because there are great amount of carboxyl and sodium carboxylate groups on PVA molecule chains,the speed of water absorption and water-absorptivity is >2.9mm/s and >15 times respectively.That is,in the case of the cataract-extraction,the polyion-modified sponges much more advantageous than any traditional nonionic polymer sponges.
