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	Preparative SEC column packed with microporous particles prepared from cellulose
	Xiong, X. P. ; Zhang, L. ; Xiong XP(熊晓鹏)
	2005
关键词	SIZE-EXCLUSION CHROMATOGRAPHY STATIONARY PHASES ENANTIOMERIC SEPARATION GELS POLYSACCHARIDES DERIVATIVES
英文摘要	New microporous particles with large pore size (mean pore diameter of 820 nm) are successfully prepared from a mixture of cellulose and konjac glucomannan (RC–KGM3) in 1.5M NaOH–0.65M thiourea aqueous solution by coagulating with 5 weight percentage (wt%) CaCl 2 , and then 2 wt% HCl aqueous solution. A preparative size-exclusion chromatographic (SEC) column packed with the gel particles is used for the fractionation of a dextran in water. The exclusion limit and fractionation range of the stationary phase are molecular masses of 125 ×104g/mol and 5.6 × 104to 125×104g/mol, respectively. The dextran [dextran 50,weight-average molecular mass (Mw) = 40.1×104g/mol,polydispersity index (d) = 3.5] is ractionated by the preparative SEC column to obtain six fractions, and four of them are refractionated twice by the same preparative SEC column. The refractionated samples F-3-3 and F-4-3 are characterized by analytical SECcombined with laser light scattering and light scattering to obtain Mwof 91.8 and 61.9×104g/mol, as well as dof 1.3 and 1.4,respectively. The results indicate that the fractions having narrowmolecular mass distribution are atisfactorily prepared with the SEC column. The described SEC column can be successfully used to fractionate polymers in aqueous solution。
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/59672]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Xiong, X. P.,Zhang, L.,Xiong XP. Preparative SEC column packed with microporous particles prepared from cellulose[J],2005.
APA	Xiong, X. P.,Zhang, L.,&熊晓鹏.(2005).Preparative SEC column packed with microporous particles prepared from cellulose..
MLA	Xiong, X. P.,et al."Preparative SEC column packed with microporous particles prepared from cellulose".(2005).

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