Synthesis of cross-linked polymer microspheres in supercritical carbon dioxide
نویسندگان
چکیده
Herein we report the synthesis of highly cross-linked polymers based on divinylbenzene by heterogeneous polymerization in supercritical CO2 (scCO2). The polymers were isolated in the form of discrete microspheres (diameter = 1.5–5 lm) in good yields (F90%), in the absence of any stabilizers. In the presence of a CO2-soluble polymeric stabilizer, much smaller particles (diameter a0.5 lm) were formed in high yields (F95%) by emulsion polymerization in scCO2.
منابع مشابه
Synthesis of Highly Cross-Linked Polymers in Supercritical Carbon Dioxide by Heterogeneous Polymerization
This paper reports the synthesis of highly cross-linked polymers in supercritical CO2 (scCO2), both with and without the addition of a CO2-soluble diblock copolymer stabilizer. It was demonstrated that, under certain specific conditions, relatively uniform, nonporous poly(divinylbenzene) (PDVB) microspheres (1-5 μm diameter) can be generated in the absence of added stabilizers. The effects of c...
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