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Synthesis and Characterization of Polysiloxane Grafted Polyamide‐Amine Surfactants
Author(s) -
Wang Xuechuan,
Sun Siwei,
Wang Haijun,
Guo Xiaoxiao
Publication year - 2017
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-016-1922-8
Subject(s) - chemistry , polyamide , polydimethylsiloxane , polymer chemistry , prepolymer , grafting , solvent , fourier transform infrared spectroscopy , amine gas treating , polyurethane , nuclear chemistry , chemical engineering , organic chemistry , polymer , engineering
Dendritic‐linear surfactants 1G PAMAM–Si and 2G PAMAM–Si were prepared by grafting the single epoxy terminated polydimethylsiloxane (SEPDMS) onto the 1G and 2G dendritic polyamide‐amine (PAMAM), respectively. SEPDMS was synthesized by hydrogen‐terminated polydimethylsiloxane and allyl glycidyl ether in chloroplatinic acid. The optimum grafting conditions were obtained by single‐factor experiments when the mole ratio of SEPDMS and PAMAM was 0.95:1, the reaction temperature was 60 °C, the reaction time was 5 h and the solvent percentage was 60%. The molecular structure of PAMAM–Si was characterized by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, gel permeation chromatograph and potentiometric acid‐base titration. Furthermore, the stability, surface activity and emulsifying ability of the prepared surfactants were studied. The results showed that PAMAM–Si has high stability against dilution, acids, alkalies and salts. PAMAM–Si surfactants can significantly reduce the surface tension of water. And 2G PAMAM–Si is superior to 1G PAMAM–Si at the ability of emulsifying oil.