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Citation: ZHU Zai-Sheng, LÜ Guang-Yong. Emulsion Copolymerization of MMA/BA in the Presence of Polyurethane Reactive Emulsifier[J]. Chinese Journal of Applied Chemistry, ;2004, 21(11): 1202-1204. shu

Emulsion Copolymerization of MMA/BA in the Presence of Polyurethane Reactive Emulsifier

ZHU Zai-Sheng ^a,, ,
LÜ Guang-Yong ^b

1.
a Department of Pharmacy, Guangdong College of Pharmacy, Guangzhou 510240;
2.
b Department of Chemistry, South China Normal University, Guangzhou

Corresponding author: ZHU Zai-Sheng,
Received Date: 31 December 2003
Available Online: 25 April 2004

A self-made polyurethane reactive emulsifier(abbreviated to PURE) was applied in the emulsion copolymerization of methyl methacrylate(MMA) and butyl acrylate(BA). The morphology of the latex particles, water resistance, adhesion capacity, tensile shear strength and thermal stability of the copolymers were investigated. The copolymer latexes obtained in the presence of PURE are consisted of monodispersed latex particles with a diameter of ca. 0.2 μm. Experimental results show that the latex films obtained possess adhesion capacity in grade 1 and tensile shear strength of τ=3.43 MPa, better than that of the common latex film. Their water-absorption rate and water-dissolving rate are only 46.4%and 19.6%, respectively, of those of the common latex films. But the thermal stability of the emulsifier-free latex films is lower than that of the common copolymer film.
- reactive emulsifier,
- polyurethane,
- emulsifier-free emulsion
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