绵杆纤维的改性(Ⅱ)──氮杂冠醚化纤维素的制备及其对金属离子的吸附性能  

COTTON STALK CELLULOSE MODIFICATION(Ⅱ) ──SYNTHESIS AND ADSORPTION PROPERTIES FOR METALLIC ION OF AZACROWN ETHER CELLULOSE DERIVATIVES

作　　者：何永炳[1] 孟令芝[1] 陈富偈[1] 吴成泰[1] 唐玉蓉[2] 

机构地区：[1]武汉大学化学系,430072 [2]武汉大学分析测试中心,430072

出　　处：《离子交换与吸附》1998年第3期261-265,共5页Ion Exchange and Adsorption

基　　金：湖北省自然科学基金

摘　　要：经环氧活化的棉杆纤维素醚分别与3-羟基-1，5-二氯杂环庚烷和3-羟基-1，5-二氮杂环辛烷反应，制备了二种氮杂冠醚化棉杆纤维衍生物，测定了它们对金属离子的吸附性能及溶液pH值的影响。结果表明二者对Hg2+，Cd2+有较好的吸附性能，对Cu2+的吸附-解吸-再吸附实验表明，二种氮杂冠醚化棉杆纤维衍生物具有重复使用的性能。The azacrown ether cotton stalk cellulose derivatives (Cell-A, Cell-B) were synthesized by reaction of 3-hydroxyl-1, 5 -diaza-cycloheptane or 3- hydroxyl -1, 5-diaza-cyclooctane with epoxy-activated cotton stalk cellulose powder(40 -60 ). The nitrogen amount of Cell-A and Cell-B is 0. 556mmol/g and 0. 561mmol/g respectively. The adsorption properties of the azacrown ether cellulose derivatives were determined for Mg2+ , Cr3+, Fe3+ , Co2+, Cu2+, Cd2+, Hg2+ and Pb2+. The results of static adsorption experiment showed that they have good adsorption capacity for Cu2+, Cd2+ and Hg2+. The adsorption amount of Cell-B is higher than Cell-A for Cd2+ and Hg2+. When the PH value of solution was increased, the adsorption capacity of ligands increased for mettalic ions.The results of the kinetic adsorption test for Cu2 + indicated that Cell-A and Cell-B have reusing character and can be reused as an anion exchanger.

关 键 词：棉杆纤维 氮杂冠醚化 纤维素 吸附性能 吸附剂 

分 类 号：O647.33[理学—物理化学]