کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5201801 1502906 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photodegradation of celluloid used in museum artifacts
ترجمه فارسی عنوان
عکاسی از سلولوئید مورد استفاده در مصنوعات موزه
کلمات کلیدی
عکاسی اکسیداسیون، نور فرابنفش، سلولوئید، آثار موزه،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی

The consequences of the photodegradation of celluloid on the modification of the material properties have been analysed. Various techniques were used to follow the accelerated degradation provoked by exposure to light (λ > 300 nm). The objective was to relate the modification of the properties at various levels of investigation, from the molecular properties towards the degradation of the macroscopic properties. The modification of the chemical structure was followed by infrared and UV-visible spectroscopic analyses. Gloss and colour measurements were performed, as well as characterization of surface mechanical properties by microhardness and Atomic Force Microscopy (AFM). The results show that the loss of gloss and the decrease of the mechanical properties are a result of a combination of the progressive loss of plasticizer and chain-scission reactions. These developments were explained in light of the modifications of the chemical structure. Quantitative cross-correlations of the degradation chemistry with performance-critical physical properties were established.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 107, September 2014, Pages 246-254
نویسندگان
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