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Characterization of polyelectrolyte ...

Jia, Yali.

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Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips./
Author:	Jia, Yali.
Description:	73 p.
Notes:	Major Professor: Charles S. Henry.
Contained By:	Masters Abstracts International41-02.
Subject:	Chemistry, Analytical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1410605
ISBN:	0493820981

Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips.
Jia, Yali.

Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips. - 73 p.

Major Professor: Charles S. Henry.

Thesis (M.S.)--Mississippi State University, 2002.

The characterization of polyelectrolyte layers adsorbed on the surface of poly(dimethyl siloxane)/glass microchannels is presented. The effect of polyelectrolyte structure, pH, and NaCl on electroosmotic flow (EOF) and film stability was determined in an attempt to develop coatings to control EOF in microchip devices. Polymer rigidity and cross-sectional area influenced the stability of cationic coatings with poly (diallyl dimethyl ammonium chloride) being the least stable while hexadimethrine and poly (allyl amine) (PAA) were more stable. The addition of NaCl to the deposition solution improved the stability while slightly reducing the total EOF for PAA films. PAA coated microchannels showed pH dependent reversible electroosmotic flow. At acidic pH, the flow direction proceeded from cathode to anode while at basic pH the flow direction proceeded from anode to cathode. Single layer PAA films were stable for more than 6 hours. The formation of double layer systems showed consistent EOF as a function of pH from 4–10 for 6 different double layer coatings. EOF on ceramic chips was tested. Channels of the 15 μm, the 30 μm and the 60 μm exhibited stable EOF. This material has the potential for generating desirable EOF especially when high potential is applied.

ISBN: 0493820981Subjects--Topical Terms:

586156
Chemistry, Analytical.

Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips.
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005 20110511
008 110511s2002 eng d
020 $a 0493820981
035 $a (UnM)AAI1410605
035 $a AAI1410605
040 $a UnM $c UnM
100 1 $a Jia, Yali. $3 1261592
245 1 0 $a Characterization of polyelectrolyte multilayers coated on capillary electrophoresis microchips.
300 $a 73 p.
500 $a Major Professor: Charles S. Henry.
500 $a Source: Masters Abstracts International, Volume: 41-02, page: 0543.
502 $a Thesis (M.S.)--Mississippi State University, 2002.
520 $a The characterization of polyelectrolyte layers adsorbed on the surface of poly(dimethyl siloxane)/glass microchannels is presented. The effect of polyelectrolyte structure, pH, and NaCl on electroosmotic flow (EOF) and film stability was determined in an attempt to develop coatings to control EOF in microchip devices. Polymer rigidity and cross-sectional area influenced the stability of cationic coatings with poly (diallyl dimethyl ammonium chloride) being the least stable while hexadimethrine and poly (allyl amine) (PAA) were more stable. The addition of NaCl to the deposition solution improved the stability while slightly reducing the total EOF for PAA films. PAA coated microchannels showed pH dependent reversible electroosmotic flow. At acidic pH, the flow direction proceeded from cathode to anode while at basic pH the flow direction proceeded from anode to cathode. Single layer PAA films were stable for more than 6 hours. The formation of double layer systems showed consistent EOF as a function of pH from 4–10 for 6 different double layer coatings. EOF on ceramic chips was tested. Channels of the 15 μm, the 30 μm and the 60 μm exhibited stable EOF. This material has the potential for generating desirable EOF especially when high potential is applied.
590 $a School code: 0132.
650 4 $a Chemistry, Analytical. $3 586156
690 $a 0486
710 2 0 $a Mississippi State University. $3 1017550
773 0 $t Masters Abstracts International $g 41-02.
790 $a 0132
790 1 0 $a Henry, Charles S., $e advisor
791 $a M.S.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1410605