文章信息/Info

Title:

Effect of Additives on Structure and Performance of PPBES Hollow Fiber Ultrafiltration Membranes

作者:

張守海; 王雨田; 楊大令; 蹇錫高

(大連理工大學化工學院 遼寧省高性能樹脂工程技術研究中心 遼寧省高分子科學與工程重點實驗室,遼寧 大連 116024)

Author(s):

ZHANG Shouhai; WANG Yutian; YANG Daling; JIAN Xigao

 (Liaoning Key Laboratory of Polymer Science and Engineering, Liaoning High Performance Polymer ，Engineering Research Center, College of Chemical Engineering, Dalian University of Technology, Dalian 116024, China)

關鍵詞:

雜萘聯苯共聚醚砜; 中空纖維超濾膜; 添加劑; 結構; 性能

文獻標志碼:

A

摘要:

以雜萘聯苯共聚醚砜為膜材料，N，N-二甲基乙酰胺作為制膜溶劑，采用干-濕紡絲工藝制備中空纖維超濾膜，分別考察不同添加劑對膜結構和性能的影響。結果表明，以聚乙烯吡咯烷酮作為添加劑時，隨著添加劑含量的增加，膜的水通量逐漸下降，而截留率變化不大；以丁酮、丙酸以及丙醇作為添加劑時，隨著添加劑含量的增加，膜的水通量和截留率的變化趨勢不盡一致，膜的斷面結構基本上是由指狀孔結構向海綿狀孔結構轉變，但也各有差別。從添加劑和溶劑的分子與分子鏈的相互作用的行為及體系動力學和熱力學狀態的變化，對膜結構和性能的影響作了分析和解釋。

Abstract:

The hollow fiber ultrafiltration membranes were prepared successfully from copoly (phthalazinone ether sulfone) with dry�瞱et spinning process. The effects of different additives on structure and performance of UF membrane were investigated. The results showed that with the increasing of polyvinylpyrrolidone content, the flux decreased gradually and the rejection changed little. With the increasing of nonsolvent additives such as Butanone, Propionic acid and Propanol, the flux increased while the rejection decreased. It is found that the increasing of additive content could lead to the change of membrane structure from finger to sponge.