Property and AFM analysis of copolymer from konjac graft acrylic acid by irradiation

The water absorption property and construction of konjac glucomannon, copolymer and regenerated copolymer demonstrated by Atomic Force Microscopy(AFM)was studied in this paper. Result showed that the copolymer was 887.8 times distilled water and the water absorption of konjac glucomannan was only 60 times. The biggest water absorption speed of distilled water was 64.7 g.g-1. min-1.The water reserving percent was 92% at room temperature after 24 h from fully water absorbing.The largest second tap water absorption was 366 times which was higher than the first. The AFM images indicated konjac grafts acrylic acid and hydrophilic sturcture comes into being. During the course of regeneration the dimensional sturcture of the copolymer was changed to more regularly.So the water absorption of copolymer was higher than konjac and regenerater's was higher than copolymer. (authors)