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- W2369657699 abstract "A new method of preparing high-solid-content and low-viscosity poly(methyl methacrylate/n-butyl acrylate/acrylic acid) emulsion with relative low emulsifier concentration and simple technology was investigated.It contains two steps,i.e.(1) prepare mono-dispersed P(MMA/BA/AA) seeded emulsion with solid content at 50% and large particle size (480～500?nm) by semi-continuous seeded emulsion polymerization;(2)use the seeded emulsion as medium,sodium dodecyl sulfate as emulsifier,sodium bicarbonate as buffer and ammonia persulfate as initiator to prepare target emulsion by semi-continuous emulsion polymerization.The preparing period was about 8 h.The total mass ratio of monomers was MMA∶BA=40∶60,and the amount of AA was 3.0% of the total mass of monomers.A series of such emulsions were prepared,in which the highest solid content was 72% with a viscosity of 400 mPa·s at a shear rate of 20 s -1 and the coagulum rate was 0 ?5%,and the emulsifier concentration of which was 2.1% of the mass of monomers.The stability during polymerization,particle size,rheology properties,gloss properties etc.of the seeded emulsion and the high-solid-content emulsion were also discussed and compared with the conventional emulsion,which was prepared with almost the same recipe.The results indicated that the obtained emulsions were bimodal in particle size,the large particle diameter was 500～600?nm and that of the small one was about 80?nm,which led to its low viscosity,as well as better glossy properties of films.It is concluded that preparing high-solid-content P(MMA/BA/AA) with this method has the following merits,(1)simple technology,(2)short preparing period,(3)low emulsifier concentration,(4)low viscosity and high gloss value." @default.
- W2369657699 created "2016-06-24" @default.
- W2369657699 creator A5038198735 @default.
- W2369657699 date "2005-01-01" @default.
- W2369657699 modified "2023-09-25" @default.
- W2369657699 title "PREPARATION AND PROPERTY STUDY OF HIGH-SOLID-CONTENT AND LOW-VISCOSITY P(MMA/BA/AA) EMULSIONS" @default.
- W2369657699 hasPublicationYear "2005" @default.
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