Journal
POLYMER ENGINEERING AND SCIENCE
Volume 63, Issue 7, Pages 2138-2148Publisher
WILEY
DOI: 10.1002/pen.26352
Keywords
emulsion; emulsion polymerization; macroemulsion; nanoemulsion; reaction kinetics; sonication; styrene butadiene latex
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Nanoemulsion polymerization is a new process for synthesizing specialty-purpose latexes. Styrene and 1,4-butadiene polymerization were demonstrated using a nanoemulsion-based method. Conventional emulsifiers were used to prepare base emulsions with small particle sizes. The use of nanoemulsion improved the efficiency and quality of emulsion, leading to higher productivity. These latexes have high molecular weight polymers with small particle sizes, making them ideal for coating applications. A comparison was made between nanoemulsion-based polymer and conventional macroemulsion-based product.
Nanoemulsion polymerization is a novel process for the synthesis of specialty-purpose latexes. In this work, styrene and 1,4-butadiene polymerization are demonstrated through a nanoemulsion-based process. Conventional emulsifiers like rosin soap and fatty soaps are used to prepare base emulsions having 2-10 nm particle size through the sonication process. The high surface area and higher number of micelles allow superior mixing of monomers and initiators leading to more efficient and rapid reaction. Additionally, the use of nanoemulsion improves the efficiency and quality of emulsion with higher productivity. These latexes have unique high molecular weight polymers with smaller particle size which is the most desirable criterion for coating applications. Finally, nanoemulsion-based polymer is compared with conventional macroemulsion-based product.
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