ISSN:
1435-1536
Keywords:
Radiation-inducedpolymerization
;
ethyl propionate
;
N-methacryloxysuccinimide
;
activesuccinimide group
;
ethylene glycol dimethacrylate
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract Radiation-induced polymerization of monomers, for example N-methacryl-oxysuccinimide (MASu) and diethylene glycol dimethacrylate (2G), in ethyl propionate, was performed from +25°C to −78°C. The copoly (MASu/2G) microspheres were obtained in MASu monomer compositions of 30 wt % or below. The average particle diameter of copoly(MASu/2G, 20/80 wt %) microspheres obtained at irradiation temperatures of 25°, 0°, and −43 °C were 0.81±0.29, 0.63±0.26, and 0.90±0.43 μm, respectively. No microspheres were formed when irradiated at −78 °C. The reactivity of the succinimide groups on the surface of copoly(MASu/2G, 20/80 wt%) microspheres was checked by reacting with ethylene diamine. The maximal amount of reacting succinimide groups was 9.4±0.5 μnol/g, which corresponds to about 1 % of the total number of succinimide groups in the microsphere.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01421822
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