| Study on regularity in emulsion copolymerization of BD-ST-2-VP latex |
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| DOI： |
| Key Words: BD-ST-2-VP latex；emulsion copolymerization；polymerization regularity |
| Author Name | Affiliation | | LU Shu-lai | Research Institute of Jilin Petrochem Company，PetroChina Co.，Ltd. | | ZHANG Su-yan | Research Institute of Jilin Petrochem Company，PetroChina Co.，Ltd. |
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| Abstract: |
| The regularity in the emulsion copolymerization of BD-ST-2-VP latex was investigated by analyzing the parameters of polymerization process，such as conversion percent η，reaction rate Rp and polymerizer pressure p，and the parameters of emulsion，such as pH value of latex，viscosity μ，surface tension σ，adsorption ratio φand particle size D vers time t.The results showed that the η-t curve was similar to classical curve of emulsion polymerization kinetics；R pincreased rapidly at first，maintained constant for a while，and then decreased gradually；pmaintained constant at first and then decreased gradually；the pH value of latex decreased slowly；μincreased rapidly to the peak，and then decreased sharply；σdecreased to the minimum at first，and then increased gradually；and φand Dincreased at first to the maximum，and then decreased gradually.
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