Please use this identifier to cite or link to this item:
https://doi.org/10.1021/la010364k
Title: | Synthesis of polymerizable anionic surfactants and their emulsion copolymerization with styrene | Authors: | Xu, X.J. Goh, H.L. Siow, K.S. Gan, L.M. |
Issue Date: | 2-Oct-2001 | Citation: | Xu, X.J., Goh, H.L., Siow, K.S., Gan, L.M. (2001-10-02). Synthesis of polymerizable anionic surfactants and their emulsion copolymerization with styrene. Langmuir 17 (20) : 6077-6085. ScholarBank@NUS Repository. https://doi.org/10.1021/la010364k | Abstract: | Two polymerizable ionic surfactants sodium 4-(ω-acryloyloxyalkyl)oxy benzene sulfonate (SABS-n, n = 8 or 10) have been synthesized and polymerized. Their critical micelle concentrations (CMC) were determined to be 9.40 × 10-3 M and 2.02 × 10-3 M at 25 °C for SABS-8 and SABS-10, respectively. The rate of micellar polymerization of SABS-8 or SABS-10 was found to be proportional to half an order of the concentration of ammonium persulfate (APS) and first order of the surfactant concentration. Their activation energies of micellar polymerization were relatively low, that is, 58.2 kJ mol-1 for SABS-8 and 45.4 kJ mol-1 for SABS-10. The monomer reactivity ratios for emulsion copolymerization of SABS-8 (M1) and styrene (M2) were determined to be r1 = 0.47 and r2 = 3.91. These emulsion copolymerizations produced small latex particles ranging from 16 to 30 nm in diameter. XPS analysis shows that SABS-8 was significantly enriched on the surface of latex particles, for example, 63.4% surface coverage on latex particles by 16 wt % SABS-8 in the feed composition. The surface coverage of about 20% polymerized surfactant on the surface of latex particles was found to be sufficient to stabilize latexes under heating at 70 °C for at least one month. | Source Title: | Langmuir | URI: | http://scholarbank.nus.edu.sg/handle/10635/95128 | ISSN: | 07437463 | DOI: | 10.1021/la010364k |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
SCOPUSTM
Citations
36
checked on Feb 3, 2023
WEB OF SCIENCETM
Citations
34
checked on Feb 3, 2023
Page view(s)
130
checked on Feb 2, 2023
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.