Synthesis and CO2 sorption in poly(1-trimethylsilyl-1-propyne) and polyvinyltrimethylsilane containing ethylene oxide groups and N-butylimidazol-based "ionic liquids" groups
Résumé
There have been developed methods of chemical modification of high permeable glassy polisilicon hydrocarbons poly(1-trimethylsilyl-1-propyne) [PTMSP] and polyvinyltrimethylsilane [PVTMS] for introducing into polymer structure of ethylene oxide groups and "ionic liquid-like" groups which are known as a group possessing strong CO2 affinity. In addition low molecular compounds having structures close to chemically modified polymers have been synthesized in order to create mechanical blends with polymers. Sorption properties of modified polymers and mechanical blends were studied in order to establish influence of nature and quantity of introduced functional groups and also method of introducing of functional groups in PTMSP and PVTMS (chemical modification or preparation of mechanical blends) on ability of reversible interaction with CO2. It was established that it is possible to surpass level of CO2 sorption that is typical for initial PTMSP and PVTMS by introducing groups specific to CO2, and, moreover, the level of sorption in such materials essentially depends on method of introducing of functional moieties.