摘要
应用中国原子能科学研究院HI-13串列加速器产生的重离子32S和79Br轰击聚对苯二甲酸乙二醇酯(PET)薄膜,再对薄膜进行化学蚀刻处理使由重离子辐照损伤产生的潜径迹形成微孔,制备出孔径为100～900nm的重离子微孔膜。为增加径迹蚀刻速率与体蚀刻速率之比,化学蚀刻前采用紫外光辐照薄膜。蚀刻过程中采用电导蚀刻法监测膜孔径生长过程。对32 S和79 Br辐照制备的重离子微孔膜进行了比较,79Br离子辐照制备的微孔膜与32S离子辐照制备的微孔膜相比,孔型圆整,锥角更小;在制备纳米微孔膜方面79Br离子优于32S离子。
Polyethylene terephthalate membranes were irradiated by 3zS and 79Br ions produced by HI-13 tandem accelerator in CIAE. The polymer chains were damaged by the irradiation, and latent tracks were created along the track of the ions. Nanoporous membranes with diameters between 100 and 900 nm were obtained by chemical etching the membranes. To increase the ratio of the velocities of the track etching to the body etching, the membranes were illuminated by ultraviolet light before chemical etching. The conductance measurement was applied to monitor the growing of the pores. The cone angle of pores in membranes irradiated by 79Br is smaller than that by 32S. The pores in the membrane irradiated by 79Br are also more round and uniform in size than that by 32 S. 79 Br ions are better than 32S ions in making nanoporous membranes.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第3期341-345,共5页
Atomic Energy Science and Technology
