Papers by Author: Chang Chun Ge

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Authors: Qiao Feng, Ling Zhi Du, Qing Zhi Yan, Chang Chun Ge
Abstract: The synthesis of thermo-responsive hydrogels poly(N-isopropylacrylamide )(PNIPAm) by frontal polymerization (FP) was carried out in four mixed solvents, i.e. dimethylsulfoxide (DMSO) mixing with water, ethanol, tetrahydrofuran (THF) and acetone, respectively. The influences of mixed solvent on frontal parameters, pore morphologies, swelling behavior of PNIPAm hydrogels were investigated. The pore of PNIPAm hydrogel synthesized in THF/DMSO was observed a big honeycomb cells, others were channel-like cells. Furthermore, the sample obtained in THF/DMSO had higher swelling ratio as compared to others, and the one synthesized in Water/DMSO showed the lowest. Above results indicated that fine-tuned poly(N-isopropylacrylamide) hydrogels can be prepared in short time and with easy protocol by adjusting mixed solvents in frontal polymerization process.
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Authors: Chang Chun Ge
Abstract: Now, over 90% of energy is produced by fossil fuel including coal, oil and natural gas, etc. With the time go on and the same consumption rate of energy, the energy status of world will be more serious. So human being should be finding other cleanness energy in order to meet their need. The solar energy is a promising energy which can be realized in the future most experts believe. Firstly, the concept of SSPS is brought forward in this paper. Additionally, the status of energy consumption and the studying trend of space solar power system (SSPS) are described which comprise the key technologies of SSPS in need. Then the key materials of development of SSPS and some suggestions are presented.
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