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Chemical Hydrophilization Modification of the Surface of Pvdf Hollow Fiber Porous Membrane

机译：PVDF中空纤维多孔膜表面的化学亲水化改性

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Polyvinylidene fluoride (PVDF) hollow-fiber membrane has many interesting specific properties, for example, good heat resistance, chemical resistance weatherability and so on. Despite the excellent chemical and physical stability of PVDF, hydrophilicity of PVDF membrane is becoming more and more of interest because of their reduced adsorption tendencies. It is difficult to modify the surface of PVDF membrane due to its chemical resistance until 1983. In that year, It was reported that hydrogen floride was eliminated by aqueous sodium hydroxide solutions, which lead to the formation C=C double bonds in the PVDF chain. Hydroxylated PVDF was prepared by the reaction of dehydrofluorinated PVDF with DMnO_4. According to these references, we have prepared two kinds of sulfonated PVDF hollow fiber proous membranes. The effects of performance and hydrophilicity of the modified PVDF hollow fiber membranes were studied.
机译：聚偏二氟乙烯（PVDF）中空纤维膜具有许多有趣的特异性特性，例如，耐热性好，耐化学性耐候性等。 尽管PVDF的优异化学和物理稳定性，但PVDF膜的亲水性由于其降低的吸附倾向而变得越来越多。 由于其化学性，难以调节PVDF膜的表面，直到1983年。在那一年，据报道，通过氢氧化钠水溶液消除氟化氢，这导致PVDF链中的形成C = C双键 。 通过脱氢氟化PVDF与DMNO_4的反应制备羟基化的PVDF。 根据这些参考文献，我们制备了两种磺化PVDF中空纤维纤维膜。 研究了改性PVDF中空纤维膜的性能和亲水性的影响。

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