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2222材料工程  2017, Vol. 45 Issue (7): 34-40    DOI: 10.11868/j.issn.1001-4381.2015.000939
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
交联剂对PVDF-g-PACMO共聚物膜抗污染性的影响
冯倩倩, 申向, 何洋, 赵义平, 颜范勇, 陈莉()
天津工业大学 省部共建分离膜与膜过程国家 重点实验室, 天津 300387
Effect of Cross-linking on Antifouling Properties for PVDF-g-PACMO Membranes
Qian-qian FENG, Xiang SHEN, Yang HE, Yi-ping ZHAO, Fan-yong YAN, Li CHEN()
State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China
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摘要 

为了增强聚偏氟乙烯接枝丙烯酰吗啉(PVDF-g-PACMO)共聚物膜的抗蛋白质吸附性能,在共聚物合成时加入交联剂乙二醇二甲基丙烯酸酯(EGDMA)。采用液-液相分离方法制备一系列EGDMA含量不同的共聚物膜,并研究交联剂的含量对共聚物膜抗蛋白质吸附性能的影响。FT-IR测试表明含有EGDMA的共聚物已成功合成。XPS、SEM、接触角、静态蛋白吸附以及渗透实验表明随着共聚物膜中交联剂EGDMA含量的增加,PACMO更容易向膜表面偏析,膜孔数量增多,亲水性提高,静态蛋白吸附量下降,纯水通量提高,总污染指数下降,可逆污染指数提高,不可逆污染指数下降。结果表明交联剂EGDMA可以显著增强PVDF-g-PACMO共聚物膜的抗蛋白质吸附性能。

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冯倩倩
申向
何洋
赵义平
颜范勇
陈莉
关键词 乙二醇二甲基丙烯酸酯聚偏氟乙烯丙烯酰吗啉抗蛋白质吸附    
Abstract

In order to enhance the capability of resistant to protein adsorption of the copolymer membrane of polyacryloylmorpholine-graft-acryloylmorpholine(PVDF-g-PACMO), a crosslinking agent of ethylene glycoldimethacrylate(EGDMA) was added to prepare the copolymer.The copolymers with different proportions of the crosslinking agent were cast into flat membranes via a liquid-liquid phase separation technique, and then the influence of EGDMA contained in the membranes on its capability of resistant to protein adsorption was investigated. FT-IR results indicate the PVDF-g-PACMO copolymers with EGDMA are synthesized successfully. A series of tests, including XPS, SEM, the contact angle, the static protein adsorption and permeation experiments, show that PACMO is much easier to segregate to the surface with the increase of the crosslinking agent content in the system, the number of membrane pores increases, meantime, the hydrophilicity and water flux of the copolymer membranes are improved. Moreover, the adsorption amount of protein, total pollution index and irreversible pollution index decrease, and reversible pollution index increases. All results indicate the crosslinking agent of EGDMA can enhance the capability of resistant to protein adsorption of PVDF-g-PACMO membranes.

Key wordsEGDMA    PVDF    ACMO    resistant to protein adsorption
收稿日期: 2015-07-30      出版日期: 2017-07-21
中图分类号:  TB34  
基金资助:国家自然科学基金(21374078);天津市应用基础与前沿技术研究计划(14JCZDJC38300)
通讯作者: 陈莉     E-mail: tjpuchenlis@163.com
作者简介: 陈莉(1963-), 女, 教授, 博士, 主要从事功能高分子材料等方面的研究, 联系地址:天津市西青区宾水西道延长线399号天津工业大学材料科学与工程学院(300387), E-mail:tjpuchenlis@163.com
引用本文:   
冯倩倩, 申向, 何洋, 赵义平, 颜范勇, 陈莉. 交联剂对PVDF-g-PACMO共聚物膜抗污染性的影响[J]. 材料工程, 2017, 45(7): 34-40.
Qian-qian FENG, Xiang SHEN, Yang HE, Yi-ping ZHAO, Fan-yong YAN, Li CHEN. Effect of Cross-linking on Antifouling Properties for PVDF-g-PACMO Membranes. Journal of Materials Engineering, 2017, 45(7): 34-40.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.000939      或      http://jme.biam.ac.cn/CN/Y2017/V45/I7/34
Group PVDF/g DMF/g ACMO/g AIBN/g EGDMA/PVDF
C1-1 10 120 10 0.168 0
C1-2 10 120 10 0.168 0.2
C1-3 10 120 10 0.168 0.4
C1-4 10 120 10 0.168 0.6
Table 1  聚合物反应体系中碱处理PVDF粉末和EGDMA的质量比
Fig.1  PVDF-g-PACMO共聚物的红外光谱图
Fig.2  PVDF-g-PACMO共聚物膜的XPS全谱谱图(1) 和C1s谱图(2) (a)M1-1;(b)M1-2;(c)M1-3;(d)M1-4
MembraneAtom fraction/% GD/%
C N O F
M1-1 57.33 1.69 4.84 36.14 7.43
M1-2 56.81 1.77 3.58 37.85 7.97
M1-3 57.30 1.92 3.78 37.00 8.76
M1-4 58.41 2.27 4.54 34.78 10.68
Table 2  PVDF-g-PACMO共聚物膜表面的化学组成
Fig.3  PVDF-g-PACMO共聚物膜的表面(1) 和断面形貌(2) (a)M1-1;(b)M1-2;(c)M1-3;(d)M1-4
Fig.4  PVDF-g-PACMO共聚物膜的动态接触角
Fig.5  PVDF-g-PACMO共聚物膜的静态蛋白质吸附量
Fig.6  PVDF-g-PACMO共聚物膜在蛋白质溶液循环过滤实验时的通量变化
Fig.7  循环过滤实验中PVDF-g-PACMO共聚物膜的RtRrRir和FRR
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