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Citation
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HERO ID
1964334
Reference Type
Journal Article
Title
Seeded Emulsion Polymerization of Butyl Acrylate Using a Redox Initiator System: Kinetics and Mechanism
Author(s)
Liu, Z; Han, Ye; Zhou, C; Zhang, M; Li, W; Zhang, H; Liu, Fqi; Liu, W
Year
2010
Is Peer Reviewed?
Yes
Journal
Industrial and Engineering Chemistry Research
ISSN:
0888-5885
EISSN:
1520-5045
Volume
49
Issue
16
Page Numbers
7152-7158
DOI
10.1021/ie901359z
Web of Science Id
WOS:000280711600006
URL
http://dx.doi.org/10.1021/ie901359z
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Abstract
Seeded emulsion polymerization of n-butyl acrylate (n-BA) was initiated by a redox initiator system: cumene hydroperoxide/ferrous sulfate hexahydrate/ethylene-diaminetetraacetic acid monosodium salt/sodium formaldehyde sulfoxylate (CHP-Fe(2+)-EDTA-SFS). Final poly(n-butylacrylate) (PBA) particles with narrow size distribution were obtained. The kinetics and mechanism of seeded emulsion polymerization initiated by the redox initiator system were investigated. Special care was focused on effects of component concentration of the redox initiator system on the seeded emulsion polymerization kinetics. Particle growth and pH variation during the polymerization were also studied. It was found that the polymerization rate and the overall conversion increased with increasing CHP and SFS concentration. Interestingly, the optimal molar ratio of CHP/SFS was 1.10/3.81 rather than being equimolar in our work. In addition, an optimal molar ratio of EDTA to ferrous ions (2.19 x 10(-5) mol/7.12 x 10(-6) mol) was found. The polymerization rate increased first and then decreased with increases in ferrous ion concentration. The pH value in the system decreased as the polymerization proceeded. A limiting conversion phenomenon of conversion not being able to exceed 20% was found, and an explanation to the limiting conversion was proposed on the basis of the views of the practical cumulative formation constant log K(MY) and reaction rate comparison. When another activator solution (EDTA/FES/SFS (mol) 2.19 x 10(-5)/7.12 x 10(-6)/1.91 x 10(-3)) was added, the limiting conversion was removed and the final conversion reached 97%.
Tags
•
Formaldehyde [archived]
Inflammation/Reactive Oxygen Species
WOS
Screened by Title/Abstract
Related to Methodology or Process
Retroactive RIS import
2014
HERO_Formaldehyde_InflammationReactiveOxygenSpecies_pid_31_uid_5713Sorting091214
HERO_Formaldehyde_InflammationReactiveOxygenSpecies_pid_31_uid_5713
Screened (Title/Abstract)
Related to Methodology or Process
•
IRIS Formaldehyde (Inhalation) [Final 2024]
Literature Indexing
WoS
Literature Identification
Inflammation and Immune-Related Mechanistic Studies
Excluded
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