Study on Synthesis and Application of Seeds in Molecularly Imprinting Polymeric Microspheres
WANG Li-ming LI Xiao-yan WU Zhi-ming (Department of Engineering,Beijing Electronic Science and Technology Vocational College,Beijing 100029,China)
Molecularly imprinting polymer microspheres for 4-aminopyridine were prepared by means of an emulsifier-free seed emulsion polymerization from ethyl acrylate and styrene using octanol and a very small amount of OS as the dispersive reagent. When the octanol and OS were employed at certain ratios, a small size and uniform distribution of the microspheres were observed. The optimal condition was found, i.e. , the dosage of octanol was 3.0 wt %, weight ratio of ethyl acrylate/styrene was 1 : 0. 229, pH was 8.0, and the polymerization temperature was 85℃.
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