PVC共混膜制备及其在造纸黑液处理中的应用(英文)  

Preparation of Hybrid PVC/PAN Membrane and Application in Treatment of Papermaking Black Liquor

作　　者：赵梓年[1] 张楠[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《中山大学学报（自然科学版）》2007年第B06期123-124,共2页Acta Scientiarum Naturalium Universitatis Sunyatseni

摘　　要：以聚氯乙烯(PVC)为膜材料,二甲基乙酰胺(DMAc)为溶剂,聚丙烯腈(PAN)为高分子添加物,研制出PVC/PAN共混膜,讨论了PVC、PAN的共混比例对共混膜性能的影响。同时,考察了PVC/PAN共混膜在处理造纸废水中的应用。实验结果表明:PVC/PAN共混膜的水通量和截留率可达到537.6(L/m2.h)和85.4%,并随PAN共混比例的增加,膜的水通量增加,截留率减小。通过电镜观察,共混膜具有不对称结构。当PAN含量为4%时,共混膜处理造纸黑液的效率较高,出水稳定,黑液的COD、色度去除率分别可达83.2%和90.8%,黑液的浊度和SS等指标也大幅降低。The hybrid of Poly vinyl chloride/polyacrylonitrile （PVC/PAN） membranes were prepared by wet phase-inversion technique, where PVC was used as a membrane material and dimethyl acetamide （DMAc） as solvents and pAN as additives, as well as its application in papermaking black liquor treatme.lt was studied. The results showed that PVC/PAN membranes with an asymmetric microporous structure, which was observed by scanning electron microscope （SEM）. Water flux of PVC/PAN blending membranes could be up to 537.6L/m^2 · h, meanwhile, the retention of egg albumin up to 85.4% at the content of PAN around 4wt%. In addition, the hybrid PVC/PAN membranes also had high removal rate of chromaticity （90. 8 % ） and COD （ 83. 2% ） in the treatment of papermaking black liquor.

关 键 词：PVC PAN 膜 造纸 黑液 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]