Fabrication of polyacrylate core–shell nanoparticles via spray drying method
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Fine polyacrylate particles are thought to be environmental plastisols for car industry. However, these particles are mainly dried through demulsification of the latexes, which is not reproducible and hard to be scaled up. In this work, a spray drying method had been applied to the plastisols-used acrylate latex. By adjusting the core/shell ratio, spray drying process of the latex was fully studied. Scanning electronic microscopy observation of the nanoparticles before and after spray drying indicated that the core–shell structures could be well preserved and particles were well separated by spray drying if the shell was thick enough. Otherwise, the particles fused into each other and core–shell structures were destroyed. Polyacrylate plastisols were developed using diisononylphthalate as a plasticizer, and plastigels were obtained after heat treatment of the sols. Results showed that the shell thickness also had a great influence on the storage stability of the plastisols and mechanical properties of the plastigels.
KeywordsNanoparticles Acrylate Core–shell Spray drying Plastisol
The authors gratefully acknowledge financial support from National Natural Science Foundation of China (Grant No. 51403003), Anhui Provincial Natural Science Foundation of Anhui Province (1508085QE105).
- Arai Y, Saeki S, Mae S (2007) Acrylic-type polymer fine particles used for acrylic-type plastisol composition for motor vehicle component, synthetic leather and wallpaper, contain t-butyl methacrylate group, (meth)acrylate group of alcohol, and monomer group. JP2008231377-A, JP2008231377-A 02 Oct 2008 C08F-220/00 200876, p 12Google Scholar
- Fox TG (1956) Influence of diluent and of copolymer composition on the glass temperature of a polymer system. Bull Am Phys Soc 1:123Google Scholar
- Kasai T, Tsuchihashi T (2011) Fine polymer particles for plastisol, process for producing the same, and halogen-free plastisol composition and article made with the same, European Patent, EP1217037Google Scholar
- Kroushl P (2007) Resin selection for PVC applications. In: Grossman RF (ed) Handbook of vinyl formulating. Wiley, Hoboken, NJ, pp 13–56Google Scholar
- Masters K (1979) Spray drying handbook. Wiley, New YorkGoogle Scholar
- Overend AS, Padget JC (1994) Plastisol compositions. US Patent 5,324,762Google Scholar
- Song XL, Cheng ZH, Chen Y, Xu YZ, Wang CP (2013) Preparation and property studies of core–shell structure polyacrylate microspheres for plastisol. Adv Mater Res 750–752:4Google Scholar