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Citation: JIANG Cui-Yu, YU Wei-Zhao, ZHANG Chun-Xiao. Preparation of Cationic Starch with a High Degree of Substitution and Its Performance as Filtrate Reducer for Drilling Fluid[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 424-428. shu

Preparation of Cationic Starch with a High Degree of Substitution and Its Performance as Filtrate Reducer for Drilling Fluid

1.
a College of Chemistry & Chemical Engineering, China Petroleum University, Dongying 257061;
2.
b Shengli Shiyou Guan Li Ju Ke ji chu, Dongying

Corresponding author: JIANG Cui-Yu,
Received Date: 10 June 2005
Available Online: 6 August 2005

A high substitution cationic starch was prepared by a damp-dry process from starch and 2,3-epoxypropyl-trimethylammonium chloride(EPTMAC).The effects of the amounts of water and alkaline catalyst as well as reaction temperature,reaction time on the substitution and reaction efficiency were studied.When the amount of starch and that of EPTMAC were 25 g and 13.1 g,respectively,the optimum reaction conditions were that ω(NaOH) was 1.2%,reaction temperature 80℃,reaction time 5 h and the amount of water 25.0%.The performance of the cationic starch as a filtrate reducer was evaluated in the laboratory.The experimental results show that the cationic starch has very good capacities of depressing the filter loss,salt-resistance and anti-caving.
- epoxypropyl-trimethylammonium chloride,
- cationic starch,
- damp-dry process,
- drilling fluid,
- filtrate reducer
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