PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF

Lian-ying Liu; Zhi-xing Zhang; Wan-tai Yang

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PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF

Papers | Updated：2021-06-21

- PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF
- Vol. 23, Issue 2, Pages: 219-225(2005)
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- Published：20 March 2005
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Lian-ying Liu, Zhi-xing Zhang, Wan-tai Yang. PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF[J]. 2005, 23(2): 219-225.
DOI：

Lian-ying Liu, Zhi-xing Zhang, Wan-tai Yang. PHOTOINITIATED INVERSE EMULSION POLYMERIZATION OF[J]. 2005, 23(2): 219-225. DOI：

摘要

Photoinitiated inverse emulsion polymerization of sodium acrylate (AANa) in kerosene was carried out at room or lower temperature

using 2

2-dimethoxy-2-phenylacetophenone (DMPA) as the initiator. Kinetic investigations indicated that the polymerization could be completed in about 30 min and produce polymer with high molecular weight (106~107). It was found that monomer droplets are the main sites for the polymerization (nucleation). With the increase of DMPA concentration

polymerization rate (Rp) reaches a maximum value while molecular weight of the produced polymer has an adverse result

but the dependence of Rp on incident light intensity is similar. Influences of other parameters such as monomer concentration

emulsifier content and reaction temperature

etc. were also studied. At lower pH values of water phase

Rp depends strongly on the pH due to the electrostatic interaction between the ionized radicals and the monomers. At higher pH

Rp shows a slight dependence on pH.

Abstract

Photoinitiated inverse emulsion polymerization of sodium acrylate (AANa) in kerosene was carried out at room or lower temperature

using 2

polymerization rate (Rp) reaches a maximum value while molecular weight of the produced polymer has an adverse result

but the dependence of Rp on incident light intensity is similar. Influences of other parameters such as monomer concentration

emulsifier content and reaction temperature

etc. were also studied. At lower pH values of water phase

Rp depends strongly on the pH due to the electrostatic interaction between the ionized radicals and the monomers. At higher pH

Rp shows a slight dependence on pH.

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