| Organic polymer microporous materials have a wide range of applications, such as the gas storage, adsorption separation, molecular sieve, electrochemistry because of the level of open channel with molecular size, high specific surface area, large pore volume, large adsorption capacity and high gas selective adsorption performance. Organic microporous materials according to its molecular structure is different, it can be divided into the Polymers of Intrinsic Microporosity (PIMs), Hypercrosslinked microporous polymer (HCPs), Conjugated Microporous Polymers (CMPs), Covalent Organic Frameworks (COFs). And compared with other materials, Hypercrosslinked microporous polymer materials’s pore size distribution and pore size is difficult to control, microporous and lower the surface tension of the air, and it is easy to introduce special functional groups by surface modification of polymer molecules on the surface modification of modified, good expanded its scope in practical application. However, so far, in addition to the already reported to choose four phenyl methane and thiophene monomer polymer, the preparation of everybody for Hypercrosslinked microporous polymer molecules and the relationship between the structure and properties are still in study. Therefore, making the concept of microporous to expand to more common organic polymer become the primary work of microporous materials researchers at present.Based on between the performance and structure of the microporous polymer for Hypercrosslinked relations well understood, in order to further deepen understanding of microcellular Hypercrosslinkedpolymer, this paper use the benzene, biphenyl, triphenylamine,1,1,2,2-Tetraphenyl-1,2-ethanediol and other four series of monomer as the reactant to make the polymers. By changing the preparation route, molecular design and different compounds a series of new type and selection of different monomer Hypercrosslinked microporous polymer with microporous and adsorption have been prepared. They have been characterized via a variety of testing methods, and studyed how physical and chemical structure of the polymer effect on the properties of materials via the combination of computer simulation technology and the theoretical calculation. Through research we found that chooses formaldehyde dimethyl acetal (FDA) as crosslinking agent and catalyst anhydrous FeC13do alkylation reaction (Friedel-Crafts, F-C), less by-products, is ideal preparation. Preparation of HCPs along with the branched chain, at the same time due to the flexibility of the molecular chain can ceaselessly as the distortion makes the macroporous structure of molecular chain to reduce, thus microporous structure increased.Preparation of polymer as the change of its specific surface area and adsorption heat, carbon dioxide gas adsorption of small molecules will change accordingly, which is based on pure tetraphenyl ethylene and synthetic microporous polymer Network-1shows high BET specific surface area is as high as1980m2/g, and carbon dioxide absorption3.63mmol/g (1.0bar/273K). But based on pure tetraphenyl glycol synthesis of microporous polymer Network-7although the specific surface area and adsorption quantity of CO2is not high, but it shows up to119:1CO2/N2selective adsorption ratio, a series of experimental data show that HCPs molecular physics, chemical structure has vital influence to the performance.The way of preparation is ordinary, cheap materials, less by-products, HCPs prepared via different aromatic monomer has good thermal stability, big specific surface area, excellent gas selective adsorption, etc., based on these advantages the polymer in the aspect of hydrogen, carbon dioxide absorption and storage has great potential, the study has vital practical and theoretical worth on the further development and research of microporous materials. |
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