接枝α-环糊精纤维素纤维的制备及对氨基酸的手性分离  

Chiral Separation of Aromatic Amino Acids Using α-Cyclodextrin-Modified Cellulose Fiber

作　　者：胡智文[1] 王秉[1] 郑海玲[1] 张殿波[1] 黄小芳[1] 杨海亮[1] 陈文兴[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,浙江杭州310018

出　　处：《高分子材料科学与工程》2010年第2期156-159,共4页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(50373038);长江学者和创新团队发展计划(IRT0654);浙江省自然科学基金资助项目(M503216)

摘　　要：在碱性介质中将α-环糊精接枝到纤维素纤维上,并对该功能性纤维的结构进行了表征。用紫外-可见分光光度法研究了接枝α-环糊精的纤维素纤维对芳香族氨基酸的手性分离。结果表明,天然α-环糊精与氨基酸的包结平衡满足Benesi-Hildebrand方程,α-环糊精和L-氨基酸的亲和力大于D-氨基酸,具有分离氨基酸对映体的能力;α-环糊精接枝到纤维素纤维上后,其分子识别能力明显提高。A novel kind of cellulose fiber grafted with α-cyclodextrin （α-CD） was synthesized in an alkaline solution, and the structure was identified by Fourier transform infrared spectroscopic（FT-IR）. Then the functionnal fiber was utilized to chiral separate aromatic amino acids monitored by using spectrophotometry. The experimental results indicate that the inclusion interaction between α-CD and amino acids satisfies the Benesi-Hildebrand equation and the L-isomer has stronger affinity with α-cyclodextrin than D-isomer. The grafting of cellulose fiber with α- cyclodextrin improves its molecule sensing ability. The molecular recognition of the cellulose fiber grafted with α-CD to aromatic amino acids is the order： phenylalanine 〉 tyrosine 〉 tryptophan.

关 键 词：Α-环糊精 纤维素纤维 芳香族氨基酸 手性分离 

分 类 号：TQ316.343[化学工程—高聚物工业]