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- Title
Synthesis and Characterization of Polysiloxane Grafted Polyamide-Amine Surfactants.
- Authors
Wang, Xuechuan; Sun, Siwei; Wang, Haijun; Guo, Xiaoxiao
- Abstract
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.
- Subjects
SILOXANES; POLYAMIDES; SURFACE active agent analysis; DENDRITIC crystals; EXCIPIENTS
- Publication
Journal of Surfactants & Detergents, 2017, Vol 20, Issue 2, p521
- ISSN
1097-3958
- Publication type
Article
- DOI
10.1007/s11743-016-1922-8