CAJ | 학술논문

将丙烯酸(AA)-丙烯酰胺(AM)共聚物与聚乙烯醇(PVA)共混制得优先透水的渗透汽化膜用于分离40%～95%的乙醇水溶液,研究了膜的热处理温度、分离温度、共聚单体摩尔比、制膜液pH值等因素对膜分离性能的影响。当用AA∶AM=1∶1(mol)的共聚物与PVA等质量共混,制膜液pH=7,制得的膜经160 ℃热处理后用于分离95%的乙醇水溶液,其分离系数和透过速率分别为PVA膜的1.3倍和8倍。
장병희산(AA)-병희선알(AM)공취물여취을희순(PVA)공혼제득우선투수적삼투기화막용우분리40%～95%적을순수용액,연구료막적열처리온도、분리온도、공취단체마이비、제막액pH치등인소대막분리성능적영향。당용AA∶AM=1∶1(mol)적공취물여PVA등질량공혼,제막액pH=7,제득적막경160 ℃열처리후용우분리95%적을순수용액,기분리계수화투과속솔분별위PVA막적1.3배화8배。
Pervaporation hydrophilic membranes were prepared by blending acrylic acid-acrylamide copolymer with PVA and used to separate 40%～95%(mass%) ethanol water solution. The effect of the membrane heated temperature, separation temperature, mol ratio of AA and AM as well as pH value of the membrane-made solution on the property of membrane were studied. On condition that AA∶AM=1∶1(mol), copolymer∶PVA=1∶1(mass), pH value of the membrane-made solution was 7, the membrane-heated temperature was 160 ℃ and 95% ethanol water solution was separated at 50 ℃, separation factor and total flux of the membrane respectively reached 1.3 and 8 times of that of PVA membrane.