摘要
通过共混法制备磺化聚醚醚酮-聚乙烯醇(SPEEK-PVA)高分子复合物,它在紫外光照射下可产生活性自由基降解甲基橙模拟污染物。探讨了溶液中SPEEK-PVA复合物光引发降解甲基橙染料的性能及机理,研究了SPEEK的磺化度、PVA与SPEEK的质量比、交联剂、pH以及O2等因素对染料降解效果的影响。制备SPEEK-PVA高分子复合物的较佳工艺为SPEEK磺化度73.3%,交联剂质量分数6%,pH=2.3,SPEEK与PVA的质量比1/3;在该工艺条件下,10mg/L甲基橙染料1h的降解率达到87.8%;该体系在光照条件下产生的高分子自由基可激发O2形成活性氧自由基,对污染物的降解有明显的促进作用。
Sulfonated poly（ether ether ketone）-poly （vinyl alcohol）（SPEEK-PVA） macromolecular compound system was prepared by blending method. It can produce macromolecular active radicals under UV irradiation which were used for degrading of simulated pollutant methyl orange. The properties and photodegrading mechanism of SPEEK-PVA compound for methyl orange in the solution was discussed. The influence of sulfonated degree of SPEEK, SPEEK-PVA quality ratio, crosslinking agent, pH and O2 on dye degradation effects were investigated. The optimal processes of the SPEEK-PVA compound were as follows, sulfonated degree of SPEEK was 73.3%, crosslinking agent mass fraction was 6%, pH was 2.3, mass ratio of SPEEK to PVA was 1/3. Under this condition, the degradation rate of 10 mg/L methyl orange dye reached 87.8% after 1 h. The macromolecular radicals generated from the system under the condition of light can stimulate the O2 to form active oxygen free radicals, which could greatly increase the degradation rate.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2013年第4期376-380,393,共6页
Journal of Functional Polymers
基金
国家自然科学基金(51203140)
