Abstract
A poly(vinyl alcohol) (PVA) label containing 2,4-hexadiyn-1,6-bis(n-butyl urethane) (HDDBU) monomer was prepared for potential use in radiation process control to detect and measure radiation exposure. HDDBU, radiation-sensitive monomer, was synthesized, dispersed into PVA solution, and coated on self-adhesive paper using an automatic film applicator system. The physicochemical characteristics of the label were investigated using a portable reflectance colorimeter, at 560 and 610nm in the dose range of 10–4000Gy. The monomer polymerizes with gamma radiation producing blue–violet coloration in PVA film and this color increases proportionally with increasing absorbed dose. The overall uncertainty of dose measurement is below 6.5% at 2σ.
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