常見例句Variations in chemical structure were found to lead to significant changes in permeability and permselectivity of polyetherimide membranes. 結(jié)果表明,這類聚醚酰亞胺的分子結(jié)構(gòu),特別是取代基的位置對透氣性和透氣選擇性有很大的影響。The fixed carrier membranes for CO2 separation are very attractive due to itshigh permselectivity as well as good stability. 分離CO2的固定載體膜同時具備良好的穩(wěn)定性和滲透選擇性能,是一類很有發(fā)展前景的新型分離膜。The pyrolysis membranes from silicon resin would be applied to membrane reactors, owing to its higher resistance to temperature and better permselectivity. 硅樹脂裂解膜由于它能耐較高溫度,具有較好的選擇透過性,因而它在膜反應(yīng)器方面具有廣闊的應(yīng)用前景。Partreplacement of HQDEA with rigid dianhydrides(PMDA and BPDA)or semirigid dianhydride(BTDA)generally increase H_2 permeability and permselectivity for gas pairs H_2/N_2 andO_2/N_2. 結(jié)果表明,在HQDEA-MDA分子中引入剛性或半剛性的第二種二酐單體后,在透H_2系數(shù)有所提高的情況下,聚醚酰亞胺的H_2/N_2選擇性明顯改善,其中BPDA改性的聚醚酰亞胺HQDEA/BPDA-MDA的透氣選擇性最好。Modification and permselectivity of polyamide composite membrane 聚酰胺復(fù)合膜的改性及其選擇滲透性Keywords LB multilayers films;gas permeation;permselectivity; LB累積層膜;氣體滲透;透過選擇性; 返回 permselectivity