Ntsiab cai ntawm polymeric membrane rau kev sib cais
Zaj duab xis ua los ntawm cov ntawv polymer lossis cov polymer sib xyaw nrog kev ua haujlwm ntawm kev sib cais cov kua dej sib xyaw. Tus txheej txheem sib cais membrane yog siv cov txheej txheem sib cais raws li txheej txheem sib nqus. Raws li lub zog tsav ntawm lub zog sib txawv, qhov sib txawv ntawm qhov sib txawv, lossis lub peev xwm sib txawv, cov khoom sib xyaw cov kua dej tau dhau los ntawm daim nyias nyias ntawm cov nqi sib txawv, yog li ntawd lawv tau tsom rau ntawm ob sab ntawm daim nyias nyias. Txhawm rau kom ua tiav lub hom phiaj ntawm kev sib cais, ua kom huv, siab thiab rov qab siv dua. Tus nqi ntawm cov kua dej mus dhau ntawm daim nyias nyias ib ntu sijhawm (permeation tus nqi), qhov sib piv ntawm permeability coefficient ntawm cov tshuaj sib txawv (sib cais coefficient), lossis qhov tsis lees txais ntawm qee yam khoom yog qhov ntsuas tseem ceeb rau kev ntsuas kev ua haujlwm ntawm daim nyias nyias. Tsuas yog thaum txoj kev sib cais membrane sib sau rau hauv daim nyias nyias membrane, lub membrane kev sib cais tshuab tuaj yeem ua cov txheej txheem sib cais tshuaj sib txawv. Feem ntau muaj txheej membrane, raj membrane, yob membrane thiab hollow fiber membrane sib cais khoom siv. Cov txheej txheem sib cais membrane yog ua tiav los ntawm kev siv lub siab sib txawv, lub siab sib txawv, lossis lub peev xwm sib txawv ua lub zog tsav.