Abstract
A broad particle-szie distribution in mini-emulsion polymerization is generally attributed to the long induction period and homogeneous nucleation in the aqueous phase. In this study, the high dissociation rate of the interfacial redox initiator system cumene hydroperoxide/ferrous ion/ethylenediaminetetraacetic acid/ sodium formaldehyde sulfoxylate (CHP-Fe2+-EDTA-SFS), which could produce hydrophobic radicals and decrease homogeneous nucleation in the aqueous phase, was used to prepare the mini-emulsion polymerization. Polystyrene particles of narrow size distribution were obtained, and their molecular weights were also very narrow (polydispersity index = 1.5-2.0). The effects of the initiator concentration, the ratio of surfactant/cosurfactant (sodium lauryl sulfate/cetyl alcohol, SLS/CA), the styrene concentration and the reaction temperature in the mini-emulsion polymerization of styrene were also investigated. When higher CHP and SFS concentrations or higher reaction temperature were used in the mini-emulsion polymerization, the polymerization rate and conversion became higher. The order of SLS : CA ratios for preparing polymer particles of high stability was 1:3 > 1:10 > 1:1 > 1:6 > 1:0.
| Original language | English |
|---|---|
| Pages (from-to) | 2509-2516 |
| Number of pages | 8 |
| Journal | polymer |
| Volume | 37 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1996 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry
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Kinetic study of the mini-emulsion polymerization of styrene. / Wang, Cheng Chien; Yu, Nan San; Chen, Chuh-Yung; Kuo, Jen Feng.
In: polymer, Vol. 37, No. 12, 01.01.1996, p. 2509-2516.Research output: Contribution to journal › Article
TY - JOUR
T1 - Kinetic study of the mini-emulsion polymerization of styrene
AU - Wang, Cheng Chien
AU - Yu, Nan San
AU - Chen, Chuh-Yung
AU - Kuo, Jen Feng
PY - 1996/1/1
Y1 - 1996/1/1
N2 - A broad particle-szie distribution in mini-emulsion polymerization is generally attributed to the long induction period and homogeneous nucleation in the aqueous phase. In this study, the high dissociation rate of the interfacial redox initiator system cumene hydroperoxide/ferrous ion/ethylenediaminetetraacetic acid/ sodium formaldehyde sulfoxylate (CHP-Fe2+-EDTA-SFS), which could produce hydrophobic radicals and decrease homogeneous nucleation in the aqueous phase, was used to prepare the mini-emulsion polymerization. Polystyrene particles of narrow size distribution were obtained, and their molecular weights were also very narrow (polydispersity index = 1.5-2.0). The effects of the initiator concentration, the ratio of surfactant/cosurfactant (sodium lauryl sulfate/cetyl alcohol, SLS/CA), the styrene concentration and the reaction temperature in the mini-emulsion polymerization of styrene were also investigated. When higher CHP and SFS concentrations or higher reaction temperature were used in the mini-emulsion polymerization, the polymerization rate and conversion became higher. The order of SLS : CA ratios for preparing polymer particles of high stability was 1:3 > 1:10 > 1:1 > 1:6 > 1:0.
AB - A broad particle-szie distribution in mini-emulsion polymerization is generally attributed to the long induction period and homogeneous nucleation in the aqueous phase. In this study, the high dissociation rate of the interfacial redox initiator system cumene hydroperoxide/ferrous ion/ethylenediaminetetraacetic acid/ sodium formaldehyde sulfoxylate (CHP-Fe2+-EDTA-SFS), which could produce hydrophobic radicals and decrease homogeneous nucleation in the aqueous phase, was used to prepare the mini-emulsion polymerization. Polystyrene particles of narrow size distribution were obtained, and their molecular weights were also very narrow (polydispersity index = 1.5-2.0). The effects of the initiator concentration, the ratio of surfactant/cosurfactant (sodium lauryl sulfate/cetyl alcohol, SLS/CA), the styrene concentration and the reaction temperature in the mini-emulsion polymerization of styrene were also investigated. When higher CHP and SFS concentrations or higher reaction temperature were used in the mini-emulsion polymerization, the polymerization rate and conversion became higher. The order of SLS : CA ratios for preparing polymer particles of high stability was 1:3 > 1:10 > 1:1 > 1:6 > 1:0.
UR - http://www.scopus.com/inward/record.url?scp=0030172828&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030172828&partnerID=8YFLogxK
U2 - 10.1016/0032-3861(96)85366-3
DO - 10.1016/0032-3861(96)85366-3
M3 - Article
VL - 37
SP - 2509
EP - 2516
JO - Polymer
JF - Polymer
SN - 0032-3861
IS - 12
ER -