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  • Title: Novel hydroxyethylcellulose-graft-poly acrylamide copolymer for separation of double-stranded DNA fragments by CE.
    Author: Yang R, Wang Y, Zhou D.
    Journal: Electrophoresis; 2007 Sep; 28(18):3223-31. PubMed ID: 17703467.
    Abstract:
    A novel separation medium, hydroxyethylcellulose-graft-polyacrylamide (HEC-g-PAM) synthesized by atom transfer radical polymerization (ATRP), used for dsDNA separation by CE is presented. The separation performance of HEC-g-PAM, which has the same graft density and different graft length, has been investigated in Tris-boric acid-EDTA (TBE) buffer solvent mixtures. The temperature-dependent rheological behavior of HEC-g-PAM was also studied by steady-shear rheometry. The results showed that dsDNA fragments between 72 and 1353 bp was achieved with a 30 cm effective capillary length at 150 V/cm using this type of graft copolymer as a separation medium in bare fused-silica capillaries, and separation improvement is obtained in HEC-g-PAM compared with HEC and poly(dimethylacrylamide (PDMA).
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