Premium
Salinity tolerance, adsorption, and emulsification properties of nonylphenol alkyl sulphonates derived from bi‐component linear alpha olefin
Author(s) -
Niu Ruixia,
Wang Daqiang,
Long Biao,
Song Hua,
Wang Chao,
Wang Jingling,
He Junyao
Publication year - 2017
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22836
Subject(s) - alkyl , adsorption , chemistry , salinity , nonylphenol , titration , alkylation , olefin fiber , nuclear chemistry , inorganic chemistry , organic chemistry , environmental chemistry , catalysis , ecology , biology
A series of bi‐component nonylphenol alkyl sulphonate surfactants with different alkyl chains (C 12/ 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 g/g (96 wt%). The effects of the raw materials composition on salinity tolerance, adsorption, and emulsification properties were also investigated. There is marked adsorption amount variation for bi‐component surfactants with a strong difference of carbon number of alkyl groups. The salinity tolerance of C 12/n ‐NPAS is about 40 g · L −1 of NaCl, and 0.65 g · L −1 of CaCl 2 . Compared with petroleum sulphonates (14 g · L −1 of NaCl, 0.08 g · L −1 of CaCl 2 ) and LAS (22 g · L −1 of NaCl, 0.37 g · L −1 of CaCl 2 ), NPAS surfactants show a low adsorption, excellent salinity tolerance, and emulsion stability.