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China Surfactant Detergent & Cosmetics ›› 2025, Vol. 55 ›› Issue (6): 700-708.doi: 10.3969/j.issn.2097-2806.2025.06.003

• Basic research • Previous Articles     Next Articles

Particulated polyether: A novel defoamer for nonaqueous foams

Yujiang Wang1,Longhao Tang2,Xiaoqian Liu3,Ning Feng3,*(),Hongguang Li3,*()   

  1. 1. Sinopec Shengli Petroleum Administration, Dongying, Shandong 257000, China
    2. Sinopec Shengli Oilfield Technology Inspection Center, Dongying, Shandong 257000, China
    3. Key Laboratory of Colloid and Interface Chemistry, School of Chemistry and Chemical Engineering, Ministry of Education, Shandong University, Jinan, Shandong 250000, China
  • Received:2024-07-15 Revised:2025-05-27 Online:2025-06-22 Published:2025-07-01
  • Contact: E-mail: 202020302@mail.sdu.edu.cn (Ning Feng); hgli@sdu.edu.cn (Hongguang Li).

Abstract:

Using triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) and citric acid as raw materials, a novel polyether was synthesized through condensation-carbonization under high temperature, which had a hyperbranched structure using nanocarbon as the core, or crosslinked morphology connected by nanocarbon. The mixture of triethanolamine monooleate/p-xylene was selected as a model system to produce nonaqueous foam. It was found that the synthesized polyether had a high defoaming efficiency up to 86% within 30 min, demonstrating a defoaming rate over 2 000 times that of the defoamer-free system. Furthermore, the crude oil from Gudao oil production plant was foamed under high pressure of CO2. The polyether also showed good defoaming efficiency to this foam of crude oil. Our work might provide a new strategy to synthesize nanocarbon-hybridized polyether, which could find applications in cases where defoamers based on organosilicone could hardly be used on a large scale, e.g., the foamed oil produced by the oilfield auxiliary chemicals that are intensively used during oil exploitation.

Key words: particulate, polyether, nonaqueous, foam, defoamer

CLC Number: 

  • TQ423