本文選題：聚偏氟乙烯 + 靜電紡絲　； 參考：《水處理技術(shù)》2016年04期

【摘要】：為考察聚合物含量對聚偏氟乙烯(PVDF)靜電紡絲納米纖維膜的結(jié)構(gòu)和性能的影響,在二甲基甲酰胺與丙酮質(zhì)量比為9:1的條件下,制備了無紡布支撐的PVDF靜電紡絲納米纖維膜,進行了聚合物PVDF含量對紡絲液基本性質(zhì)與膜的形貌結(jié)構(gòu)及分離性能的影響分析。結(jié)果表明,提高紡絲液中PVDF含量,紡絲液的表面張力與電導(dǎo)率降低,納米纖維間珠粒數(shù)量減少,纖維直徑增大。直接接觸式膜蒸餾脫鹽應(yīng)用實驗表明,PVDF的質(zhì)量分數(shù)為12%條件下制備的疏水膜,在鹽溶液與冷側(cè)循環(huán)水溫度分別為80℃與20℃時,其通量可達62.38 kg/(m~2·h),產(chǎn)水電導(dǎo)率為8μS/cm,鹽截留率達到99.99%以上。
[Abstract]:In order to investigate the effect of polymer content on the structure and properties of polyvinylidene fluoride vinylidene fluoride (PVDF) electrospun nanofiber membrane, PVDF nanofiber membrane supported by non-woven fabric was prepared at 9:1 mass ratio of dimethylformamide to acetone. The effects of polymer PVDF content on the basic properties of spinning solution, morphology, structure and separation properties of the film were analyzed. The results showed that with the increase of PVDF content in spinning solution, the surface tension and electrical conductivity of spinning solution decreased, the number of beads between nanofibers decreased, and the diameter of fibers increased. The application experiment of direct contact membrane distillation desalination shows that the hydrophobic membrane prepared under the condition of 12% mass fraction of PVDF is at 80 鈩，

本文編號：2024985