2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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Clean Technology 2008

Comparative thermodynamic study of functionalized homogeneous and multilayer latex particles

M. Corea, J.M. del Río
Instituo Politécnico Nacional, MX

Keywords:
functionzalized particles, carboylic groups, swelling

Abstract:
In this work, two series of polymeric particles of poly(butyl acrylate-co-methyl methacrylate), P(BuA-MMA) functionalized with acrylic acid (AA) were synthesized by means of emulsion polymerization techniques. In both cases, the total carboxylic concentration was varied inside the particle between 0, 5, 10, 15 and 20 wt %. and number of particles was maintained constant in two systems. In the fist series, homogeneous latex particles were synthesized, whereas in second series, the latex particles were synthesized in three layers, where a gradient of carboxylic groups was generated inside the particle. The behaviour of polar and non-polar groups was determined by means of specific partial volume and compressibility at infinite dilution, which were calculated from density and sound speed measurements at 30, 50 and 70 ºC.


Nanotech 2008 Conference Program Abstract