Besides optimum rheological properties and adhesion, adhesives must meet other conditions: not toxic, flammable and does not pollute the environment. Classical adhesives based on volatile organic compounds; do not fully meet these requirements, for which aqueous dispersion adhesives environment have become increasingly used, tending to replace almost completely organic solvent-based adhesives. Through grafting operation of elastomeric chains with methyl methacrylate, of dispersion of their solution in the aqueous environment and the use in the composition of the sodium montmorillonite, was obtained adhesive "water-based" with the characteristics of high initial and final adhesion, comparable with the organic solvents, and low toxicity or even absent. Particle size provides important information on the optical properties, stability, and viscosity of the system. At the same time, can elucidate the kinetic aspects of both during the emulsion the synthesis when obtain composite materials. Particle size distribution of adhesives solutions was determined with equipment Mastersizer 2000 (Malvern Instruments, UK) laser light, the range from 0.02 to 2000 mm, with precision of ± 1%. By measuring the particle size and phase distribution on micron-scale or nanometer, it has been shown that the smaller the particles the better penetrate porous media substrates, and on the other hand, the dispersions can have a high dry matter content, which may lead to an optimum combination of rough media. This class represents the most innovative volatile organic replacement based adhesives products.

Author Name: Laurentia Alexandrescu, Maria Sonmez, Mihai Georgescu, Mihaela Nituica, Dana Gurau, Zenovia Moldovan

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Keywords: adhesive dispersions, particle size, phase distribution

ISSN: 2068-0783

EISSN: 2068-0783

EOI/DOI:

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