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Citation: ZHAO Xiao-Lei, ZHANG Yue-Jun, ZHU Ling-Ling. Bactericidal Performance of PDM with Series Intrinsic Viscosity[J]. Chinese Journal of Applied Chemistry, ;2009, 26(1): 27-31. shu

Bactericidal Performance of PDM with Series Intrinsic Viscosity

1.
School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094

Corresponding author: ZHANG Yue-Jun,
Received Date: 17 December 2007
Available Online: 2 April 2008
Fund Project: “十五”国家科技攻关项目(2003BA327C) (2003BA327C)南京市科技计划项目(04d251016) (04d251016)

Six water samples contaminated by bacteria were prepared.The bactericidal capabilities of polydimethyldiallylammonium chloride(PDM) with series intrinsic viscosity were studied under the effect of kind,content of substrate and bacterial content.The results showed that the bactericidal rates of PDM against the 4 samples of slightly polluted water(bacteria content 1×10⁴～1×10⁵ cells/mL) containing 0.1% or 10% organic,inorganic substrates and the 2 samples of heavily polluted water(bacteria content 1×10⁶～1×10⁷ cells/mL) containing 10% organic,inorganic substrates increased firstly with the increase of dosage.The bactericidal rates approached to or exceeded 99% when dosage reached 4,0.03,11,0.10,14,2.8 mg/L respectively.Thus,the content of organic substrates influenced the bactericidal performance of PDM obviously.A low content of inorganic substrates influenced the bactericidal rates of PDM least.It could be estimated that the actual dosages of PDM(η:0.48,1.53,2.52,3.99 dL/g) were 0.029,0.028,0.027,0.026 mg/L and 2.73,2.35,2.33,2.31 mg/L respectively against slightly and heavily polluted water samples without substrates when the bactericidal rates reached 99%.The higher the intrinsic viscosity of PDM,the better the bactericidal performance.
- polydimethyldiallylammonium chloride,
- intrinsic viscosity,
- bactericidal performance,
- bactericidal rate,
- organic substrate,
- inorganic substrate
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