PREPARATION AND RELEASE PROPERTIES OF A pH-TUNABLE CARBOXYMETHYL CELLULOSE HYDROGEL/METHYLENE BLUE HOST/GUEST MODEL
PH-sensitive carboxymethyl cellulose (CMC) hydrogel beads were successfully prepared in spherical form by a suspension-cross-linking technique by using epichlorohydrin (ECH) as the crosslinking agent and fluid wax as the suspending solvent. The hydrogel beads are nearly perfect spherical shape with diameter about 4 mm, which exhibits reversible Ph-sensitive behavior. The hydrogel beads have good characteristics of adsorption and release. Their ability to uptaking and releasing cationic guest molecules, such as methylene blue, could be tuned by controlling the degree of carboxylate ionization via Ph. At 25 , ℃ the maximum loading amount for Methylene Blue (MB) exceeded 1350.6 g/g with 56.27％ adsorption ratio.
carboxymethyl cellulose hydrogel pHTunable adsorption release
Yang Shaoping Fu Shiyu Zhou Yiming Xie Chuanlong Li Xueyun
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology, Guangzhou,510640, China
国际会议
广州
英文
173-176
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）