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http://dx.doi.org/10.7473/EC.2017.52.3.211

A Study of Characteristics Variation of Thermally Expandable Microspheres in Post-polymerization Treatment by Various Initiators  

You, Hae Na (Kum Yang Co., Ltd.)
Kim, Ji Hoo (Kum Yang Co., Ltd.)
Kim, Myeong Woo (Kum Yang Co., Ltd.)
Kim, Keon Il (Kum Yang Co., Ltd.)
Park, Hyun Duk (Kum Yang Co., Ltd.)
Publication Information
Elastomers and Composites / v.52, no.3, 2017 , pp. 211-215 More about this Journal
Abstract
Thermally expandable microspheres were used as post-treatment initiators of potassium persulfate, sodium bisulfite, and sodium sulfide in order to improve the foaming ability and whiteness when foaming a mixture of thermally expandable microsphers and poly(vinyl chloride). Potassium persulfate showed no significant influence on the foaming behavior, foam expansion, whiteness, and yellowing, whereas in the case of using sodium bisulfite. In particular, sodium bisulfite demonstrated the best efficiency with 2 wt% treatment. The thermally expandable microspheres prepared herein can provide excellent foamability and whiteness, and are expected to be applicable in various fields such as general coating and wallpaper.
Keywords
potassium persulfate; sodium bisulfite; thermally expandable microsphere; post-treatment;
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1 M. Jonsson, O. Nordi, A. L. Kron, and E. Malmstrom, "Thermally expandable microspheres with excellent expansion characteristics at high temperature", J. Appl. Polym. Sci., 117, 384 (2010).
2 Y. Kawaguchi and T. Oishi, "Synthesis and properties of thermoplastic expandable microspheres: The relation between crosslinking density and expandable property", Journal of Applied Polymer Science, 93, 505 (2004).   DOI
3 M. Jonsson, D. Nystrom, O. Nordin, and E. Malmstrom, "Surface modification of thermally expandable microspheres by grafting poly (glycidyl methacrylate) using ARGET ATRP", European Polymer Journal, 45, 2374 (2009).   DOI
4 J. H. Bu, Y. S. Kim, J. U. Ha, and S. E. Shim, "Suspension Polymerization of Thermally Expandable Microcapsules with Core-Shell Structure Using the SPG Emulsification Technique: Influence of Crosslinking Agents and Stabilizers", Polymer(Korea), 39, 78 (2015).
5 Y. Kawaguchi, Y. Itamura, K. Onimura, and T. Oishi, "Effects of the chemical structure on the heat resistance of thermoplastic expandable microspheres", Journal of Applied Polymer Science, 96, 1306 (2005).   DOI
6 P. Ilundain, D. Alvarez, L. Da Cunha, L. R. Salazar, M. J. Barandiaran, and J. M. Asua, "Knowledge-based choice of the initiator type for monomer removal by postpolymerization", Journal of Polymer Science Part A: Polymer Chemistry, 40, 4245 (2002).   DOI
7 P. H. H. Araújo, C. Sayer, R. Giudici, and J. G. Poco, "Techniques for reducing residual monomer content in polymers: a review", Polymer Engineering & Science, 42, 1442 (2002).   DOI
8 R. Khesareh, N. T. McManus, and A. Penlidis, "High temperature bulk copolymerization of methyl methacrylate and acrylonitrile: II. Full conversion range experiments", Journal of Macromolecular Science, 43, 23 (2006).   DOI
9 A. Kumar, B. Prasad, and I. M. Mishra, "Optimization of process parameters for acrylonitrile removal by a low-cost adsorbent using Box-Behnken design", Journal of Hazardous Materials, 150, 174 (2008).   DOI
10 R. Salazar, P. Ilundain, D. Alvarez, L. Da Cunha, M. J. Barandiaran, and J. M. Asua, "Reduction of the residual monomer and volatile organic compounds by devolatilization", Industrial & Engineering Chemistry Research, 44, 4042 (2005).   DOI