The cyclohexene 1 was oxidized with polymer-supported 2.2-bipyridine cobalt(II) complex in the presence of CO2. The conversion and selectivity was sensitive to the pressure of CO2.
The heterogeneous free-radical polymerization of methyl methylacrylate (MMA) and divinylbenzene (DVB) as cross-linker within supercritical carbon dioxide-swollen silicon rubber (SR) has been studied as an approach to ...The heterogeneous free-radical polymerization of methyl methylacrylate (MMA) and divinylbenzene (DVB) as cross-linker within supercritical carbon dioxide-swollen silicon rubber (SR) has been studied as an approach to preparing semi-interpenetrating polymer network (semi-IPN) of SR and poly(methyl methylacrylate) (PMMA). The SR/PMMA semi-IPNs were characterized by scanning electron microscopy (SEM) and dynamic mechanical analyzer (DMA).展开更多
Styrene was polymerized in supercritical （sc） CO2 with benzoyl peroxide （BPO） as initiator. It was found that the polymerization was accelerated by the external magnetic field.
The solubilities of a number of solid solutes in supercritical CO2 have been correlated usingthe model proposed in previous paper. The numbers of CO2 in each CO2 -solute cluster and the localdensity of the CO2 in the...The solubilities of a number of solid solutes in supercritical CO2 have been correlated usingthe model proposed in previous paper. The numbers of CO2 in each CO2 -solute cluster and the localdensity of the CO2 in the clusters are predicted using the model. The results calculated agree fairly wellwith the experimental data.展开更多
Supercritical CO2 with ethanol as blowing agent foamed poly（methylmethacrylate） （PMMA） fiber at 308.15K and in the pressure range from 12-15MPa. The foam structure was detected using scanning electron microscope. ...Supercritical CO2 with ethanol as blowing agent foamed poly（methylmethacrylate） （PMMA） fiber at 308.15K and in the pressure range from 12-15MPa. The foam structure was detected using scanning electron microscope. It was found that the concentration of ethanol in the fluid is a major parameter to affect the foam structure.展开更多
文摘The cyclohexene 1 was oxidized with polymer-supported 2.2-bipyridine cobalt(II) complex in the presence of CO2. The conversion and selectivity was sensitive to the pressure of CO2.
基金This work was supported by the National Natural Science Foundation of China (50173030).
文摘The heterogeneous free-radical polymerization of methyl methylacrylate (MMA) and divinylbenzene (DVB) as cross-linker within supercritical carbon dioxide-swollen silicon rubber (SR) has been studied as an approach to preparing semi-interpenetrating polymer network (semi-IPN) of SR and poly(methyl methylacrylate) (PMMA). The SR/PMMA semi-IPNs were characterized by scanning electron microscopy (SEM) and dynamic mechanical analyzer (DMA).
基金This work is financially supported by National Key Basic Research Project(G2000048010)the National Natural Science Foundation of China for financial support(29725308).
文摘Styrene was polymerized in supercritical （sc） CO2 with benzoyl peroxide （BPO） as initiator. It was found that the polymerization was accelerated by the external magnetic field.
文摘The solubilities of a number of solid solutes in supercritical CO2 have been correlated usingthe model proposed in previous paper. The numbers of CO2 in each CO2 -solute cluster and the localdensity of the CO2 in the clusters are predicted using the model. The results calculated agree fairly wellwith the experimental data.
基金the National Natural Science Foundation of China for financial support (29725308, 29633020).
文摘Supercritical CO2 with ethanol as blowing agent foamed poly（methylmethacrylate） （PMMA） fiber at 308.15K and in the pressure range from 12-15MPa. The foam structure was detected using scanning electron microscope. It was found that the concentration of ethanol in the fluid is a major parameter to affect the foam structure.
