新型耐高温复合反渗透膜的制备与性能 |
作者:胡利杰1 张守海1,4 观姗姗1 蹇锡高1,2,3,4 |
单位: 1.大连理工大学化工学院;2.大连理工大学高分子材料研究所;3.辽宁省高性能树脂工程技术研究中心;4.辽宁省高分子科学与工程重点实验室 大连 116024 |
关键词: 杂萘联苯聚芳醚腈酮;界面聚合; 复合反渗透膜;热稳定性 |
DOI号: |
分类号: TQ028. 8 |
出版年,卷(期):页码: 2013,33(3):23-27 |
摘要: |
以杂萘联苯聚芳醚腈酮超滤膜为基膜,间苯二胺作为水相单体、均苯三甲酰氯作为有机相单体,通过界面聚合法制备了新型耐高温聚芳香酰胺复合反渗透膜.本文研究了单体浓度、反应时间对膜性能的影响,用扫描电子显微镜和红外光谱仪表征了界面聚合反应前后膜表面形貌和化学结构的变化,并对膜的耐高温性能进行了考察.随着操作温度从20 ℃升高到95 ℃,膜的脱盐率保持在97.9%,通量从7.4 L/m2h上升至31.4 L/m2h;膜在沸水中煮沸至3小时,其脱盐率基本不变而通量先增加后趋于稳定,表明杂萘联苯聚芳醚腈酮复合反渗透膜具有优良的耐高温性能. |
Novel thermally stable aromatic polyamide (APA) composite reverse osmosis (RO) membranes were prepared from metaphenylene diamine and trimesoyl chloride on poly (phthalazione ether nitrile ketone) (PPENK) ultrafiltration membranes by interfacial polymerization. The effects of monomers concentration and reaction time on the performance of composite membranes were studied. Furthermore, the surface morphology and chemical structure of membranes were examined by scanning electronic microscopy and fourier transform infrared spectroscopy (FT-IR), respectively. Moreover, the thermal stability of RO membranes was also discussed. When the operation temperature increased from 20 ℃ to 95 ℃, the salt rejection of membranes was kept about 97.9%, while the flux of membranes increased from 7.4 L/m2h to 31.4 L/m2h; the flux increased first then reached a plateau and the salt rejection kept constant when RO membranes in boiling water were boiled to 3 h. In a word, APA-PPENK composite RO membranes show good thermal stability. |
基金项目: |
作者简介: |
胡利杰(1985-)女,河南省新乡市人,博士生,大连理工大学化工学院,从事耐高温液体分离膜的研究,hlj19851014@yahoo.com.cn. 通讯联系人,E-mail: jian4616@dl.cn,zhangshh@dlut.edu.cn. |
参考文献: |
[1] 王晓伟,贾铭椿,杨开.反渗透膜对水中硼酸脱除性能的实验研究[J].膜科学与技术, 2011,31(6): 78-81. [2] 张守海,蹇锡高,杨大令.新型耐高温分离膜用高分子材料[J].现代化工,2002, 22 (S1):203-205. [3] 陈连周,蹇锡高,高峡,等.新型聚芳醚酮腈的合成及表征[J].河北工业大学学报,1999,28(5):22-25. [4] 蹇锡高,李琦,王明晶,等.含二氮杂萘酮联苯结构聚芳醚腈酮及其制备法[P],中国专利,03111540.3(2004). [5] 周红欣.杂萘联苯聚醚酮类树脂低成本合成及性能研究[D].大连理工大学,2011,85-89. [6] 王国庆,蹇锡高,张守海,等.低截留分子质量新型聚芳醚腈酮超滤膜的研制[J].现代化工,2003, 23(7):37-40. [7] 陈尧,陈国华,陈容,等.戊二醛- 硫酸混合交联壳聚糖/聚砜复合纳滤膜的结构与性能[J].膜科学与技术,2007,27(4):31-36. [8] 邹凯伦,王丽红,张林,等.TMC/TMPIP纳滤超薄复合膜的制备[J].化工学报,2012,63(3):948-954. [9] 邱实,吴礼光,张林,等.界面聚合工艺条件对反渗透复合膜性能的影响[J].化工学报,2008,59(8):2027-2034. [10] 高学理,王伟伟,陈晓琳,等.界面聚合法制备海藻酸钠/聚砜复合纳滤膜[J].膜 科学与技术,2011,31(4):27-30. [11] Chai G Y,Krantz W B.Formation and characterization of polyamide membranes via interfacial polymerization[J].J Membr Sci,1994,93:175-192. [12] 宋玉军,程淑英,刘福安,等.制NF-TFC膜的界面聚合反应研究[J].水处理技术,2000,26(4):203-206. [13] Wei J,Jian X,Wu C,etal. Influence of polymer structure on thermal stability of composite membranes[J]. J Membr Sci,2005,256:116-121. [14] 张守海.杂环联苯聚芳醚的化学改性及其分离膜的研制[D].大连理工大学,2002,92 |
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