通过喷涂-高温塑化的方法,在400目不锈钢网上复合PPS(聚苯硫醚)-PTFE(聚四氟乙烯)涂层,构造微米级细长纤维结构,制成一种新型聚四氟乙烯微孔油水分离膜。该油水分离膜具有良好的疏水性和亲油性,并且能够承受较高的压力而不发生透水。经...通过喷涂-高温塑化的方法,在400目不锈钢网上复合PPS(聚苯硫醚)-PTFE(聚四氟乙烯)涂层,构造微米级细长纤维结构,制成一种新型聚四氟乙烯微孔油水分离膜。该油水分离膜具有良好的疏水性和亲油性,并且能够承受较高的压力而不发生透水。经接触角测量仪测定,水滴在网膜上的接触角可达131.6°,柴油滴一接触网膜就铺展开来,接触角接近0°,具有良好的疏水亲油性。随着膜的厚度增加,膜与水的接触角略有降低。新型油水分离膜可以应用到浮油及分散油的分离中,正交试验表明水的流量对分离膜的分离效果影响最大,油流量影响次之,分离压力影响最小。在水流量10 L h-1、油流量1.02 L h-1、分离器进出口压力差10 kPa条件下,油水混合物经六级分离,含油量可降低到8.75 mg L-1,达到国家污水综合排放标准中的二级标准(10 mg L-1)。展开更多
Hybrids consisting of a microporous film and polymeric microspheres were fabricated via a simple method without a special apparatus. Highly ordered microporous polymer films with honeycomb structure were fabricated by...Hybrids consisting of a microporous film and polymeric microspheres were fabricated via a simple method without a special apparatus. Highly ordered microporous polymer films with honeycomb structure were fabricated by a dissipative process utilizing amphiphilic poly(acrylic acid)- block-polystyrene, which was synthesized by atom transfer radical polymerization followed by an acid-catalyzed ester cleavage reaction. In order to embed the microsphere efficiently, the dried microporous films should be soaked in methanol to alter the surface functionality and to improve the wettability of the film surface. The introduction of amino functionality to polystyrene microspheres by seeded polymerization of N,N-dimethylaminoethyl methacrylate drastically improved the embedding efficiency. The effect of open pore size was also investigated.展开更多
Regular array microporous films from poly （ L-lactic-co-glycolic acid ） （ PLGA ） were prepared on stainless steel substrates utilizing the condensation of water droplets on polymer solutions. The size of the pores...Regular array microporous films from poly （ L-lactic-co-glycolic acid ） （ PLGA ） were prepared on stainless steel substrates utilizing the condensation of water droplets on polymer solutions. The size of the pores and regularity can be controlled by atmospheric humidity and concentration of polymer solution. The microporous films have strong hydrophabicity and good haemocompatibility.展开更多
文摘通过喷涂-高温塑化的方法,在400目不锈钢网上复合PPS(聚苯硫醚)-PTFE(聚四氟乙烯)涂层,构造微米级细长纤维结构,制成一种新型聚四氟乙烯微孔油水分离膜。该油水分离膜具有良好的疏水性和亲油性,并且能够承受较高的压力而不发生透水。经接触角测量仪测定,水滴在网膜上的接触角可达131.6°,柴油滴一接触网膜就铺展开来,接触角接近0°,具有良好的疏水亲油性。随着膜的厚度增加,膜与水的接触角略有降低。新型油水分离膜可以应用到浮油及分散油的分离中,正交试验表明水的流量对分离膜的分离效果影响最大,油流量影响次之,分离压力影响最小。在水流量10 L h-1、油流量1.02 L h-1、分离器进出口压力差10 kPa条件下,油水混合物经六级分离,含油量可降低到8.75 mg L-1,达到国家污水综合排放标准中的二级标准(10 mg L-1)。
文摘Hybrids consisting of a microporous film and polymeric microspheres were fabricated via a simple method without a special apparatus. Highly ordered microporous polymer films with honeycomb structure were fabricated by a dissipative process utilizing amphiphilic poly(acrylic acid)- block-polystyrene, which was synthesized by atom transfer radical polymerization followed by an acid-catalyzed ester cleavage reaction. In order to embed the microsphere efficiently, the dried microporous films should be soaked in methanol to alter the surface functionality and to improve the wettability of the film surface. The introduction of amino functionality to polystyrene microspheres by seeded polymerization of N,N-dimethylaminoethyl methacrylate drastically improved the embedding efficiency. The effect of open pore size was also investigated.
文摘Regular array microporous films from poly （ L-lactic-co-glycolic acid ） （ PLGA ） were prepared on stainless steel substrates utilizing the condensation of water droplets on polymer solutions. The size of the pores and regularity can be controlled by atmospheric humidity and concentration of polymer solution. The microporous films have strong hydrophabicity and good haemocompatibility.
