SCHEDULED MAINTENANCE
Investigation on modified polyether as an efficient CO2 thickener†
Yongfei
Zhang, 
a
Jun
Tang
*b
a
Jun
Tang
*b
Abstract
The development of a new generation of carbon dioxide (CO2) thickeners is significant for improving carbon dioxide flooding technology. Here, co-polymers based on epoxide heptamethyltrisiloxane and glycidyl phenyl ether are prepared, and their solubility and thickening ability in CO2 are evaluated. The solubility of the modified polyethers in CO2 remarkably increases with the modification of heptamethyltrisiloxane and decreases upon introducing phenyl glycidyl ether. With incorporation of 18.4 mol% phenyl groups into the co-polymer, the co-polymer exhibits a highly increased thickening effect, while maintaining high solubility in CO2. Implications of the present study for the preparation of a highly efficient CO2 thickener are discussed.
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