Journal
POLYMER INTERNATIONAL
Volume 68, Issue 4, Pages 755-763Publisher
WILEY
DOI: 10.1002/pi.5763
Keywords
cardanol; surfactant; LAB; polyoxazoline; cationic polymerization
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Well-defined linear alkyl benzene surfactants (COx(n)) were successfully synthesized using cardanol as a green phenolic alternative and initiator for polyoxazoline (POx), the hydrophilic block of nonionic surfactants. Various hydrophilic lipophilic balance values were investigated by varying the POx length according to the [monomer]/[initiator] ratio. The chemical structure of the surfactants, in particular the terminal groups, was well identified by matrix assisted laser desorption ionization time of flight mass spectrometry demonstrating the good progress of the cationic ring-opening polymerization. The COx(n) surfactants spontaneously self-assembled in water at a critical aggregation concentration of 1-2 mu mol L-1 into nano-objects characterized by a hydrodynamic diameter of 11-24 nm and a number of aggregations ranging from 30 to 60 according to the worm-like micelle model. (c) 2019 Society of Chemical Industry
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