Volume 124, Issue 6 pp. 4694-4701

Preparation and characterization of polyacrylate/polymerized rosin composite emulsions by seeded semicontinuous emulsion polymerization

Pingxu Chen

Pingxu Chen

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

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Xingrong Zeng

Corresponding Author

Xingrong Zeng

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China===Search for more papers by this author
Hongqiang Li

Hongqiang Li

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

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Xiaodan Liu

Xiaodan Liu

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

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Dandan Liu

Dandan Liu

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

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Xiaolan Li

Xiaolan Li

College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China

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First published: 06 December 2011
Citations: 16

Abstract

Polyacrylate/polymerized rosin composite emulsions were prepared by seeded semicontinuous emulsion polymerization of acrylate monomers in which polymerized rosin was dissolved. The effects of polymerized rosin content on the polymerization stability, monomer conversion, polymer structure, and adhesive properties were studied. Polyacrylate/polymerized rosin composites were characterized by gel permeation chromatograph (GPC), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermogracvimetry (TG). The results showed that with an increase of polymerized rosin content from 0 to 6 wt %, gel fraction and sol molecular weight decreased obviously but monomer conversion was basically unchanged. In contrast, with a further increase of polymerized rosin content, the decreasing rates of gel fraction, and sol molecular weight were slowed down. Meanwhile, monomer conversion decreased remarkably. Moreover, interface failure changed into cohesive failure after the addition of polymerized rosin, and the peel adhesion and shear resistance of composite latex films declined with the increase of polymerized rosin content. Thermal analysis showed that polymerized rosin and polyacrylate were compatible and the composite latex films had good thermal stability. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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