Correlation between softwood discoloration induced by accelerated lightfastness testing and by indoor exposure
Journal
Polymer Degradation and Stability
Journal Volume
72
Journal Issue
2
Pages
361-365
Date Issued
2001
Author(s)
Abstract
The correlation between accelerated lightfastness testing and indoor exposure in softwood discoloration was evaluated. The discoloration of softwood exposed to indoor environments was simulated by using an accelerated lightfastness tester equipped with UVA-351 lamps. The trends of the discoloration of three species of softwood (western hemlock, China fir, Japanese cedar) in the accelerated lightfastness testing were similar to those in the indoor exposure test. Bathochromic effects occurred in the spectral reflectance curves of wood with increase in exposure time, and consequently, its color turned yellowish-red. Using the acceleration shift factor (ASF), we could obtain a correlation between accelerated lightfastness testing and indoor exposure. Results from the ASFs of three softwoods examined indicate that discoloration in the accelerated lightfastness test is 250 times more severe than that in the indoor exposure test. © 2001 Elsevier Science Ltd.
SDGs
Type
journal article