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1.中国科学院近代物理研究所 兰州 730000
2.中国科学院深圳先进技术研究院 深圳 518055
3.广州中国科学院先进技术研究所 广东膜材料和膜分离省重点实验室 广州 511458
4.青岛中科华联新材料股份有限公司 青岛 266500
[ "蔡畅, 男, 1993年出生, 2016年毕业于广州大学, 现为博士研究生, 专业为凝聚态物理", "CAI Chang, male, born in 1993, graduated from Guangzhou University in 2016, doctoral student, major in condensed matter physics" ]
苗晶, E-mail:jing.miao@giat.ac.cn MIAO Jing, E-mail:jing.miao@giat.ac.cn
收稿日期:2016-12-31,
修回日期:2017-04-19,
纸质出版日期:2017-10
移动端阅览
蔡畅, 陈琪, 苗晶, 等. 聚碳酸酯和聚酯核孔膜的性能研究[J]. 核技术, 2017,40(10):100301
Chang CAI, Qi CHEN, Jing MIAO, et al. Characteristics of polycarbonate and polyester nuclear track membranes[J]. Nuclear techniques, 2017, 40(10): 100301
蔡畅, 陈琪, 苗晶, 等. 聚碳酸酯和聚酯核孔膜的性能研究[J]. 核技术, 2017,40(10):100301 DOI: 10.11889/j.0253-3219.2017.hjs.40.100301.
Chang CAI, Qi CHEN, Jing MIAO, et al. Characteristics of polycarbonate and polyester nuclear track membranes[J]. Nuclear techniques, 2017, 40(10): 100301 DOI: 10.11889/j.0253-3219.2017.hjs.40.100301.
聚碳酸酯(Polycarbonate,PC)和聚对苯二甲酸乙二酯(Polyethylene Terephthalate,PET)薄膜因其可被碱性溶液有效刻蚀而被用于核孔膜材料。采用11.4 MeV·u
-1
的Au离子和20 MeV·u
-1
的Kr离子分别辐照PC及PET薄膜,然后经NaOH溶液蚀刻,制得膜孔径分别为20-400 nm和100-700 nm的PC和PET核孔膜。扫描电子显微镜(Scan Electron Microscope,SEM)和气-液排除法等表征和测试结果显示孔密度与辐照剂量有关;蚀刻时间越长,膜孔径越大,实验制备的核孔膜孔分布越均匀。被辐照后的PET膜亲水性比PC膜高。在0.15 MPa和室温下,水溶液中的牛血清白蛋白(Bovine Serum Albumin,BSA)可被不同孔径的PET核孔膜有效截留;膜孔径越小,截留率越高,过滤所需压力越大,膜越易被污染。
Background
2
Polycarbonate (PC) and polyethylene terephthalate (PET) films were widely used as the materials for nuclear track membranes because both of them could be etched effectively with alkaline solutions.
Purpose
2
This paper aims to research the characteristics of polycarbonate and polyester nuclear track membranes.
Methods
2
The PC and PET foils were irradiated with Au ions (11.4 MeV·u
-1
) and Kr ions (20 MeV·u
-1
) respectively. Then the irradiated foils were etched with the NaOH aqueous solution. The pore sizes of PC and PET nuclear track membranes were in the range of 20 nm to 400 nm and 100 nm to 700 nm
respectively.
Results
2
The pore sizes and their distributions of these membranes were characterized with scanning electron microscopy (SEM) and the method of gas-liquid displacement
respectively. It suggested that the irradiation fluence determined the membrane pore density; the longer the etching time
the larger the membrane pore size
and the evener the distribution of membrane pore sizes. The surfaces of the irradiated PET membranes were more hydrophilic than those of the irradiated PC membranes.
Conclusion
2
The experimental results suggest that bovine serum albumin (BSA) in aqueous solution could be rejected effectively by PET nuclear track membranes with different membrane pore sizes at 0.15 MPa and ambient temperature. The smaller the membrane pore size
the higher the rejection to BSA
and the higher the operating pressure required
resulting in more serious membrane fouling.
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