Characteristics of polycarbonate and polyester nuclear track membranes

Chang CAI; Qi CHEN; Jing MIAO; Yonghui CHEN; Zhibin JIANG; Dan MO; Jie LIU

doi:10.11889/j.0253-3219.2017.hjs.40.100301

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Characteristics of polycarbonate and polyester nuclear track membranes

NUCLEAR CHEMISTRY, RADIOCHEMISTRY, RADIOPHARMACEUTICALS AND NUCLEAR MEDICINE | 更新时间：2021-05-19

- Characteristics of polycarbonate and polyester nuclear track membranes
- NUCLEAR TECHNIQUES Vol. 40, Issue 10, Article number: 100301(2017)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  the Project on the Integration of Industry, Education and Research of Guangdong Province;Shenzhen Basic Research Programs;Shenzhen Basic Research Programs;the International Science & Technology Cooperation Program of Nansha Free Trade Zone
- DOI：10.11889/j.0253-3219.2017.hjs.40.100301
  CLC： TL99
- Received：31 December 2016，
  
  Revised：19 April 2017，
  
  Published：2017-10
- 稿件说明：
移动端阅览
Chang CAI, Qi CHEN, Jing MIAO, et al. Characteristics of polycarbonate and polyester nuclear track membranes[J]. Nuclear techniques, 2017, 40(10): 100301
DOI：

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.

摘要

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。

Abstract

Background

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

This paper aims to research the characteristics of polycarbonate and polyester nuclear track membranes.

Methods

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

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

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.

关键词

Keywords

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