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Citation: LIU Hong-Yu, LIU Cui-Yun, LV Ben-Lian, LUO Jie, SONG Wen-Sheng, ZHANG Yu-Qing. Preparation and Properties of Na-Montmorillonite Cross-linked Thickeners[J]. Chinese Journal of Applied Chemistry, ;2008, 25(9): 1061-1064. shu

Preparation and Properties of Na-Montmorillonite Cross-linked Thickeners

1.
Key Laboratory of Polymer Science and Nano-technology, Henan University of Science and Technology, Luoyang 471003

Corresponding author: LIU Hong-Yu,
Received Date: 24 August 2007
Available Online: 12 January 2008
Fund Project: 河南科技大学人才科研基金(13460011) (13460011)SRTP(2007054)资助项目 (2007054)

A kind of new thickeners with enhanced resistance ability to electrolyte was prepared.Exfoliated inorganic montmorillonite was used as an effective multifunctional cross-linker.In these composites polymer chains were grafted on the clay surface at one or both ends.The rheology of these thickeners in pure water,NaCl or NaHCO₃ solution has been studied.Experimental results reveal that these composites show enhanced resistance ability to electrolyte.The viscosity of 5% bis-cross-linked thickener decreased from 118 Pa·s to 6 Pa·s in the presence of 5 mL of 2 mol/L NaCl solution.The viscosity of montmorillonite cross-linked thickener decreased from 63 Pa·s to 24 Pa·s in the presence of 5 mL of 2 mol/L NaCl solution.When the amount of NaCl solution was 8 mL,the viscosity still maintained 16.5 Pa·s.
- thickener,
- montmorillonite,
- acrylamide,
- inverse suspension polymerization
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