| 摘要 |
<p>Semipermeable membrane comprises crosslinked polymer consisting mainly of modified polyether amine obtd. by reaction of polyether having repeat unit of formula (I): (where X is Cl, Br or I; i and j are mole fraction, and i + j = 1, 0 =i =1, 0 = j =0.8, and polyamine having more than two prim. or sec. amino gps. (prim. amino is one or less). The membrane has good resistance to hydrolysis, chemicals, esp. chlorine, and mechanical property. The membrane is useful for the desalination of seawater or brine. In an example, a semipermeable membrane was obtd. by casting modified polyether amine of 4-(aminomethyl)piperidine on polysulphone membrane.</p> |
