Journal
DYES AND PIGMENTS
Volume 100, Issue -, Pages 50-56Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2013.07.021
Keywords
Emulsion polymerization; Poly(styrene-co-acrylic acid); Colored nanosphere; Disperse dye; Dye content; Emulsifier
Funding
- National Natural Science Foundation of China [511730]
- Industrialization Projects of Major Independent Innovation Achievements of Shandong Province [2012ZHZX1A0914]
- Natural Science Foundation of Shandong Province [Y2008B62]
- Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education (Donghua University) [ECO-ZD-2011-0011]
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Colored nanospheres are widely used in paints, inks, food, electronic displays, textiles, and medicine. In the present study, we describe an emulsifier-free emulsion polymerization process for the synthesis of poly(styrene-co-acrylic acid) nanospheres, such that the influence of surfactants is eliminated. The obtained nanosphere dispersions were mixed with three commercial disperse dye solutions. After heat treatment, pure and brightly colored nanosphere powders were obtained by a simple purification procedure. Transmission electron microscopy images showed that the average particle size of the nanospheres increased by 23 nm after coloration, and differential scanning calorimetry revealed a decrease of 2.98 degrees C in the glass transition temperature. The amounts of dyes fixed within the nanospheres depended on the dye concentration of solution. The three different dyes were incorporated to varying levels, corresponding to their ability to form hydrogen bonds with the polymer nanospheres. (C) 2013 Elsevier Ltd. All rights reserved.
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