Oxygen permeability of surface-modified poly(dimethylsiloxane) characterized by scanning electrochemical microscopy
Oxygen permeability of surface-modified poly(dimethylsiloxane) characterized by scanning electrochemical microscopy
复制标题
DOI：
10.1246/cl.2006.234
复制
发表时间：
2006-02-05
影响因子：
1.6
通讯作者：
Yamada, H
中科院分区：
文献类型：
--
作者：
Shiku, H;Saito, T;Yamada, H
用扫描电化学显微镜(SECM)定量表征了聚二甲基硅氧烷(PDMS)及其表面修饰的聚二甲基硅氧烷(PDMS)的透氧行为。氧从PDMS衬底到针尖电极的传质过程是扩散受限的，而经过氧等离子体处理或白蛋白吸附的PDMS的透氧性受到严格的限制。我们的结果表明，氧等离子体辐照和白蛋白在PDMS表面的吸附可能影响PDMS的透氧性。
Scanning electrochemical microscopy (SECM) was employed to quantitatively characterize the oxygen permeation behaviors of poly(dimethylsiloxane) (PDMS) and surface-modified PDMS. The mass-transfer process of oxygen from the PDMS substrate to the tip electrode is diffusion limited, whereas the oxygen permeability of PDMS subjected to oxygen plasma treatment or albumin adsorption is critically restricted. Our results suggest that the oxygen permeability of PDMS is possibly affected by O-2 plasma irradiation and albumin adsorption at the PDMS surfaces.