CMC/阳离子β-环糊精自组装材料的制备研究

Preparation of CMC/Cationic β-CD Self-assembled Materials

该文研究了羧甲基纤维素(CMC)与阳离子β-环糊精(β-CD)的组装规律。结果表明:阳离子β-CD的固载量随其用量的增加而增加,随着pH、电解质(NaCl)浓度、阳离子β-CD取代度(DS)的增加,先增后降,且分别在pH≈7、c(NaCl)=1 mmol/L和DS≈0.46时固载量达到最大;温度、浆浓和洗涤次数对固载量的影响并不明显,组装时间为10 min时固载反应基本完成。将改性纤维(CMC/阳离子β-CD组装体)抄成的纸应用于苯酚废水的过滤,结果表明,对苯酚分子的去除率最高达83.445%。

The self-assembly of cationic β-cyclodextrin on carboxymethyl-cellulose（CMC） fibers was investigated in this paper. The results show that the fixed amount of cationic β-CD is increased with its dosage while is increased first and then decreased with the increase of pH value, concerntration of electrolyte （NaCI） and the degree of substitution （DS） of the carboxymethyl-cellulose fibers. The fixed amount of cationicβ-CD reaches its maximum under the conditions of pH 7,1 mmol/L electrolyte（NaCl）contration, and a cationic β-CD with a DS of 0.46. The fiber concentration, temperature and washing so rapid that it is finished in 10 minutes. times have insignificant effect on the fixed amount. The assembly is The self-assembled materials was used to make functional paper and remove phenolphthalein in water. The removal rate of phenolphthalein is up to 83.445%.