Ultra‐long‐chain amidobetaine surfactants have become one of the hot topics recently, but the influence of the hydrophilicheadgroup on the aggregation behaviors and the correlation between surfaceactivities and thickening ability have been less documented. In this work, comparative studies on the effect of the hydrophilicgroup on Kraffttemperature (TK), surfaceactivities and rheologicalbehaviors of erucyl
Synthesis of gemini ammonium sulfobetaine and its proppant suspension and gel-breaking mechanisms
作者:Tao Wang、Jianhong Xiao、Lushan Wang、Aiqing Ma、Mimi Tian、Chen Wang
DOI:10.1039/d0ra00211a
日期:——
the rate of decline is more than 50% after 200 min. Some of the worm-like micelles adsorbed on the proppant surface participate in the formation of the three-dimensional network, appropriately supporting the proppant-carrying performance. When potassiumpermanganate is used as the gel breaker, the characterization of the GAS gel-breaking liquid indicates that the double bond is disintegrrated by the
A Facile Route towards the Preparation of Ultra-Long-Chain Amidosulfobetaine Surfactants
作者:Yujun Feng、Zonglin Chu
DOI:10.1055/s-0029-1217973
日期:2009.10
A series of novel, ultra-long-chain amidosulfobetaine surfactants were prepared by amidation of ultra-long-chain fatty acids directly with N,N-dimethyl-1,3-propanediamine in the absence of solvents, followed by quaternization of the intermediates with 1,3-propanesultone in ethyl acetate.
A category of gemini surfactants with novel structures were designed and synthesized as thickening agents of clean fracturing fluids with good temperature stability in this research.