کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203944 | 1381944 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A study of early colour change due to simulated accelerated sunlight exposure in Scots pine (Pinus sylvestris)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A detailed study of early colour change in Scots pine (Pinus sylvestris) due to accelerated simulated sunlight exposure was undertaken focusing on the first 24Â h of change. Colour changes were monitored with a Datacolor check spectrophotometer and compared with a set of controls. Measurements on both samples and controls were performed hourly for the first 24Â h and there after daily until 168Â h' exposure with extra measurements at 200, 350 and 500Â h. A subset of samples was extracted prior to exposure to check the effects of any colour change due to the presence of extractives. Data was analysed using the reflectance spectra (400-700Â nm) as well as the CIE-Lâaâbâ system and ÎE. The majority of colour changes were found to occur within the first 24Â h. This was unaffected by the removal of extractives from the wood and was independent of temperature. Mechanical properties and weight changes were also monitored to allow a comparison of sensitivity between the differing methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 94, Issue 9, September 2009, Pages 1589-1594
Journal: Polymer Degradation and Stability - Volume 94, Issue 9, September 2009, Pages 1589-1594
نویسندگان
Victoria Sharratt, Callum A.S. Hill, Darwin P.R. Kint,