摘要
用间苯二胺作为水相第二单体，研究了微量间苯二胺对聚哌嗪酰胺复合纳滤膜性能的影响。间苯二胺添加质量分数为0～0．05％，研究了该变量对纳滤膜盐截留率、水通量、表面形貌、水接触角的影响。结果表明，随着微量间苯二胺添加，纳滤膜对氯化钠的截留性能明显上升（34％至90％），水通量明显下降（112L／（m^2·h）至23L／（m^2·h）），膜亲水性下降。X射线光电子能谱结果表明，微量间苯二胺的添加，使得复合层交联度上升，从而进一步引起上述膜性能变化。因此，在纳滤膜生产中，微量间苯二胺可以作为水相的第二单体调控纳滤膜的性能，同时应避免间苯二胺污染引起的膜性能波动。
The effect of microdose M-phenylendiamine on the performance of polypiperazine-amide composite nanofiltration membrane was studied. M-phenylendiamine with a mass concentration range of 0-0.05% was added in aqueous phase to adjust the salt rejection rate, water flux, surface topography, water contact angle ofnanofiltration membrane. The NaCl rejection rate ofnanofiltration membrane increases from 34% to 90% and the water flux goes down from 112 L/（m^2·h） to 23 L/（m^2·h） with the addition of M-phenylendiamine. The results of X-ray photoelectron spectroscopy show that, the addition of m-phenylendiamine increases the crosslinking degree of composite layer. Therefore, in the preparation of nanofiltration membrane, M-phenylendiamine can be used as a second monomer to regulate the performance of nanofiltration membrane. Meanwhile, it is necessary to avoid M-phenylendiamine contamination to insure the membrane performance.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第7期59-62,共4页
Technology of Water Treatment
基金
工信部新材料产业化专项项目(GX1301)
浙江省海水淡化技术研究重点实验室项目(SK12-05)
杭州市科委重大项目(HZ13-01)
关键词
纳滤膜
间苯二胺
聚哌嗪酰胺
盐截留率
nanofiltration membrane
M-phenylendiamine
polypiperazine amide
salt rejection rate
