Search results for "environmental weathering"

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Effect of environmental conditions on the durability of polycarbonate for the protection of cultural heritage sites.

2019

Polycarbonate is a good material for covering and protecting cultural heritage sites because of its durability, mechanical properties, and transparency. However, polycarbonate degrades under environmental weathering with a significant decrease of physical and mechanical properties and loss of transparency. In this work, the contemporary presence of ultraviolet irradiation and different temperature and moisture conditions have been taken into account to study the environmental degradation of this polymer with regard to its mechanical and optical properties. The photo-oxidation reactions cause a decrease in the molecular weight and the formation of many oxygenated species. The hydrolytic sci…

Time FactorsUltraviolet Rayslcsh:BiotechnologyCultural heritage durability environmental weathering polycarbonate Humidity Oxidation-Reduction Polycarboxylate Cement Time Factors Ultraviolet RaysBiomedical EngineeringBiophysicsBioengineering02 engineering and technology010402 general chemistry01 natural sciencesBiomaterialsEnvironmental protectionlcsh:TP248.13-248.65environmental weatheringPolycarbonatePolycarboxylate CementHumidityGeneral Medicine021001 nanoscience & nanotechnologyDurabilityTransparency (behavior)0104 chemical sciencesCultural heritageSettore ING-IND/22 - Scienza E Tecnologia Dei Materialipolycarbonatevisual_artvisual_art.visual_art_mediumCultural heritage; durability; environmental weathering; polycarbonateCultural heritagedurabilityBusiness0210 nano-technologyOxidation-ReductionJournal of applied biomaterialsfunctional materials
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