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Citation: JU Ben-Zhi, ZHANG Shu-Fen, YANG Jin-Zong. Preparation of Cross-linking Cationic Starch and Its Decolorization Performance[J]. Chinese Journal of Applied Chemistry, ;2001, 18(6): 477-480. shu

Preparation of Cross-linking Cationic Starch and Its Decolorization Performance

1.
State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012

Received Date: 7 August 2000
Available Online: 2 January 2001
Fund Project: 国家自然科学基金资助项目(29776009) (29776009)

In the presence of lithium hydroxide solution (6%), the cross-linking cationic starch bearing quaternary amino groups was prepared via reaction of starch with glycidyl trimethyl ammonium chloride (GTA) by dry process. The effects of lithium hydroxide catalyst solution (6%), reaction temperature, reaction time, amount of water on reaction efficiency were studied and discussed briefly. Under conditions: starch 5.8 g,GTA 3 g, lithium hydroxide solution (6%) 2 g, reaction time 4 h, reaction temperature 70℃ and amount of water 24.6%, the product with 0.5 degree of substitution was obtained. The reaction efficiency was 83.3%. The results showed that the cross-linking cationic starch was an excellent decolorant for reactive dyes. When the dosage was 105 mg/L,the decolorization efficency on synthetic wastewater containing reactive red X-3B、reactive blue X-BR、reactive yellow KN-6G 100 mg/L was 99.1%、88.0%、95.5% respectively.
- cross-linking cationic starch,
- preparation,
- decolorizing property
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