Stability of Grafted Polymer Nanoscale Films toward Gamma Irradiation

作者：Borodinov Niko Lay; Giarnmarco James; Patel Neil; Agarwal Anuradha; O'Donnell Katie R; Kucera Courtney J; Jacobsohn Luiz G; Luzinov Igor^*

来源：ACS Applied Materials & Interfaces, 2015, 7(34): 19455-19465.

DOI：10.1021/acsami.5b05863

• grafted polymer films
• gamma irradiation
• radiation stability
• enrichment polymer layers
• nanoscale polymer films

The present article focuses on the influence of gamma irradiation on nanoscale polymer grafted films and explores avenues for improvements in their stability toward the ionizing radiation. In terms of applications, we concentrate on enrichment polymer layers (EPLs), which are polymer thin films employed in sensor devices for the detection of chemical and biological substances. Specifically, we have studied the influence of gamma irradiation on nanoscale poly(glycidyl methacrylate) (PGMA) grafted EPL films. First, it was determined that a significant level of cross-linking was caused by irradiation in pure PGMA films. The cross-linking is accompanied by the formation of conjugated ester, carbon double bonds, hydroxyl groups, ketone carbonyls, and the elimination of epoxy groups as determined by FTIR. Polystyrene, 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl, dimethylphenylsilanol, nanoparticles were incorporated into the films and were found to mitigate different aspects of the radiation BaF2, and gold damage.

• 出版日期2015-9-2