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Stability of Grafted Polymer Nanoscale Films Toward Gamma Irradiation

Stability of Grafted Polymer Nanoscale Films Toward Gamma Irradiation

Nikolay Borodinov, James Giammarco, Neil Patel, Anuradha Agarwal, Katie R O'Donnell, Courtney J Kucera, Luiz G Jacobsohn, Igor Luzinov

ACS Appl Mater Interfaces. 2015 Sep 2;7(34):19455-65.

PMID: 26259102

Abstract:

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, BaF2, and gold nanoparticles were incorporated into the films and were found to mitigate different aspects of the radiation damage.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP5272184	Dimethylphenylsilanol		5272-18-4	Price

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