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Initiator Systems Effect on Particle Coagulation and Particle Size Distribution in One-Step Emulsion Polymerization of Styrene

School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Author to whom correspondence should be addressed.
Academic Editor: Haruma Kawaguchi
Polymers 2016, 8(2), 55;
Received: 6 December 2015 / Revised: 5 February 2016 / Accepted: 15 February 2016 / Published: 19 February 2016
(This article belongs to the Special Issue Selected Papers from ASEPFPM2015)
PDF [2857 KB, uploaded 19 February 2016]


Particle coagulation is a facile approach to produce large-scale polymer latex particles. This approach has been widely used in academic and industrial research owing to its higher polymerization rate and one-step polymerization process. Our work was motivated to control the extent (or time) of particle coagulation. Depending on reaction parameters, particle coagulation is also able to produce narrowly dispersed latex particles. In this study, a series of experiments were performed to investigate the role of the initiator system in determining particle coagulation and particle size distribution. Under the optimal initiation conditions, such as cationic initiator systems or higher reaction temperature, the time of particle coagulation would be advanced to particle nucleation period, leading to the narrowly dispersed polymer latex particles. By using a combination of the Smoluchowski equation and the electrostatic stability theory, the relationship between the particle size distribution and particle coagulation was established: the earlier the particle coagulation, the narrower the particle size distribution, while the larger the extent of particle coagulation, the larger the average particle size. Combined with the results of previous studies, a systematic method controlling the particle size distribution in the presence of particle coagulation was developed. View Full-Text
Keywords: emulsion polymerization; particle size distribution; coagulation; initiator emulsion polymerization; particle size distribution; coagulation; initiator

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Liu, B.; Wang, Y.; Zhang, M.; Zhang, H. Initiator Systems Effect on Particle Coagulation and Particle Size Distribution in One-Step Emulsion Polymerization of Styrene. Polymers 2016, 8, 55.

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