Abstract
Three new mixed-type surfmers were synthesized using poly(propylene oxide)/poly(ethylene oxide)/poly(propylene oxide) (PPO-PEO-PPO) having terminal tertiary amine group as the basic material: (1) PPO-PEO-PPO with a carboxyl group on one end (MTA); (2) PPO-PEO-PPO with a quaternary ammonium group on one end (JTA); (3) PPO-PEO-PPO with a quaternary ammonium group on one end and a carboxyl group on the other end (MJTA). These products were confirmed by 1H-NMR and FT-IR. Similar to PPO-PEO-PPO, the three surfmers have a cloud point (Tcp). Both MJTA and MTA have lower Tcp than JTA. However, the cloud points of both MJTA-Na+ and MTA-Na+ are much higher than JTA. Their different Tcp may be caused by their strength of dissociation in water. In addition, at a high temperature (T>Tcp of MJTA), MJTA-Na+ can be considered a pH-sensitive surfactant. At neutral and alkaline conditions, it can be used as an emulsifier. However, at acidic conditions, it loses its emulsification property. MTA-Na+ has the same property.
Acknowledgments
This work was financially supported by the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20135121120007) and National Science Fund for Distinguished Young Scholars of China (No. 51125019).
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©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial improvements at the Journal of Polymer Engineering
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Articles in the same Issue
- Frontmatter
- Editorial
- Editorial improvements at the Journal of Polymer Engineering
- Original articles
- Cationic copolymerization of 1,3-pentadiene with α-pinene
- In vitro degradation of polyglycolic acid synthesized by a one-step reaction
- Synthesis of a novel class of mixed-type surfmers and their properties in water
- Unique viscosity mutation of multi-generation hyperbranched waterborne polyurethane
- Preparation and characterization of oxidized starch-graft-poly(styrene-butyl acrylate) latex via emulsion polymerization
- Peroxide vulcanization of natural rubber. Part I: effect of temperature and peroxide concentration
- The stimuli-response characters of hydrogels prepared using ultrasound
- A new conductometric biosensor based on horseradish peroxidase immobilized on chitosan and chitosan/gold nanoparticle films
- A new approach for the development of textile waste cotton reinforced composites (T-FRP): laminated hybridization vs. coupling agents
- Effects of the surface treatment of wollastonite on the tensile and flow properties for reinforced polypropylene composites
- Effect of the quenching temperature on the mechanical and thermophysical properties of polycarbonate pigmented with titanium dioxide
- Processing and characterization of poly(lactic acid) blended with polycarbonate and chain extender
- Characteristics analysis and mold design for ultrasonic-assisted injection molding