Flexibility Modification of Konjac Glucomannan Film by Deacetylation
Konjac glucomannan (KGM) were modified by deacetylation with sodium hydroxide, calcium hydroxide, sodium carbonate, sodium phosphate, respectively and mechanical properties of modified KGM films were investigated. The modification mechanism was explored by FTIR. Results show that deacetylation of KGM play an important role on the flexibility of the modified membranes, and the flexibilities vary with different modifiers. The flexibility of the films modified by sodium hydroxide is significantly higher than that of the others. The modified films with good flexibility were prepared by simple steps as follows: NaOH modifiers and KGM (1％) were added to water, stirred until the pH arrived at 9. And then the KGM swelled at the temperature of 50℃ for 2 hours, the modified KGM sol was cast onto glass plates, the modified membranes were formed after dried at 50℃.
Konjac Glucomannan Deacetylation Membrane
Chen YAN Xiaoyan LIN Xuegang LUO Yingting KANG
School of Materials Science and Engineering, Southwest University of Science and Technology,Sichuan, 621010, China
国际会议
重庆
英文
1248-1251
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）