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Citation: FAN Zhong-Lei, LI Dian-Qing, Edward Rosenberg. Synthesis and Adsorption Property of Poly(allylamine)-Silica Composite[J]. Chinese Journal of Applied Chemistry, ;2003, 20(9): 867-870. shu

Synthesis and Adsorption Property of Poly(allylamine)-Silica Composite

1.
a Chemical College, Zhengzhou University, Zhengzhou 450002;
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b Department of Chemistry, University of Montana, MT 59812

Corresponding author: FAN Zhong-Lei,
Received Date: 26 December 2002
Available Online: 7 April 2003

Poly(allylamine)-silica composite(PAA-silica composite) was synthesized by grafting chloropropyltrichloro-silane(CPTCS-silica) gel onto PAA polymer in the solution. The PAA-silica composite with amino group content of 1.75 mmol/g was obtained by reacting 75 g CPTCS-silica with 185 g PAA-15 in 100 mL methanol. The result shows that PAA-silica composite could be used as an adsorbent for metal ions, which has an adsorption capacity of 0.85 mmol/g for Cu(Ⅱ) at pH=3.5 and of 0.53 mmol/g for Pb(Ⅱ) at pH=4.0 at 25℃, respectively. The structures and properties of silica gel, CPTCS-silica and PAA-silica composites were characterized by the FTIR spectra and angles of contact.
- silica gel,
- CPTCS-silica,
- poly(allylamine)-silica composite,
- adsorption
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