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A series of bi‐component nonylphenol alkyl sulphonate surfactants with different alkyl chains (C12/n‐NPAS, n = 8, 10, 14, 16) were synthesized through sulphonation‐alkylation‐neutralization, using a mixture of linear alpha olefins as raw materials. The chemical structures were characterized by FTIR and ESI‐MS. The purity values measured by the two‐phase titration method were all higher than 0.96...
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