Swelling properties of particles in amphoteric polyacrylamide dispersion
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Swelling properties of amphoteric polyacrylamide (AmPAM) dispersions were investigated by measurements of apparent viscosity and particle morphology. AmPAM dispersion was prepared by dispersion polymerization in aqueous solution of ammonium sulphate. Changes of particles during dispersion polymerisation of AmPAM were simulated and compared with anionic and cationic polyacrylamide (APAM and CPAM, respectively). Sample viscosity and particle morphology were obtained using a rotational viscometer and optical microscope. It was found that small molecules or ions enter and swell particles in the AmPAM dispersion when (NH4)2SO4 concentration decreases. Similarly, monomers, including acrylamide, acrylic acid, and methacrylatoethyl trimethyl ammonium chloride, have the same effects on the AmPAM dispersion but the effect degree is different. Swelling properties of the AmPAM dispersion were different from those of the APAM and CPAM dispersions due to their different ionic nature, type of stabiliser, media, etc. Particles in the APAM or CPAM dispersions were swelled less than those in the AmPAM dispersion.
Keywordsswelling property dispersion polymerisation amphoteric polyacrylamide ionic polyacrylamide
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- Bartoň, J., Kawamoto, S., Fujimoto, K., Kawaguchi, H., & Capek, I. (2000). Preparation of partly hydrophobized, crosslinked polyacrylamide particles by terpolymerization of acrylamide/N,N-methylenebisacrylamide/styrene in inverse microemulsion. Polymer International, 49, 358–366. DOI: 10.1002/(SICI)1097-0126(200004)49:4<358::AID-PI376>3.0.CO;2-1.CrossRefGoogle Scholar
- Ezell, R. G., Gorman, I., Lokitz, B., Treat, N., McConaughy, S. D., & McCormick, C. L. (2006). Polyampholyte terpolymers of amphoteric, amino acid-based monomers with acrylamide and (3-acrylamidopropyl)trimethyl ammonium chloride. Journal of Polymer Science Part A: Polymer Chemistry, 44, 4479–4493. DOI: 10.1002/pola.21543.CrossRefGoogle Scholar
- Hong, J., Hong, C. K., & Shim, S. E. (2007). Synthesis of polystyrene microspheres by dispersion polymerization using poly(vinyl alcohol) as a steric stabilizer in aqueous alcohol media. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 302, 225–233. DOI: 10.1016/j.colsurfa.2007.02.027.CrossRefGoogle Scholar
- Ishimatsu, R., Shigematsu, F., Hakuto, T., Nishi, N., & Kakiuchi, T. (2007). Structure of the electrical double layer on the aqueous solution side of the polarized interface between water and a room-temperature ionic liquid, tetrahexylammonium bis(trifluoromethylsulfonyl)imide. Langmuir, 23, 925–929. DOI: 10.1021/la0623073.CrossRefGoogle Scholar
- Itoh, T., Fukutani, K., Hino, M., Ihara, E., & Inoue, K. (2009). Effects of polystyrene-b-poly(aminomethyl styrene)s as stabilizers on dispersion polymerization of styrene in alcoholic media. Journal of Colloid and Interface Science, 330, 292–297. DOI: 10.1016/j.jcis.2008.10.052.CrossRefGoogle Scholar
- Kawaguchi, S., & Ito, K. (2005). Dispersion polymerization. Advances in Polymer Science, 175, 299–328. DOI: 10.1007/b100118.Google Scholar
- Musial, W., Kokol, V., Fecko, T., & Voncina, B. (2010a). Morphological patterns of poly(N-isopropylacrylamide) derivatives synthesized with EGDMA, DEGDMA, and TEGDMA crosslinkers for application as thermosensitive drug carriers. Chemical Papers, 64, 791–798. DOI: 10.2478/s11696-010-0065-z.CrossRefGoogle Scholar
- Zhang, Y., Lin, H., Li, Z., & Lv, P. (2008). Improvement of shrimp (Penaeus vannamei) allergens purification by ammonium sulfate precipitation. Food and Drug, 10, 50–52. (in Chinese)Google Scholar