عنوان مقاله :
بررسي هوازدگي در چوب راش استيله شده با استفاده از طيف سنجي و ميكروسكوپ الكتروني
عنوان به زبان ديگر :
Investigation effect of Weathering on Acetylated Beech Wood by FTIR Spectroscopy and Electron Microscopic
پديد آورندگان :
اختري، مليحه نويسنده Akhtari, M
اطلاعات موجودي :
دوفصلنامه سال 1389 شماره 32
كليدواژه :
چوب راش , استيلاسيون , ميكروسكوپ الكتروني (SEM) , هوازدگي مصنوعي , طيف سنجي FTIR , تغييرات فيزيكي و تغييرات شيميايي
چكيده لاتين :
In this study acetylated Beech wood (Fagus orientalis Lipsky) has been subjected to a variety of artificial weathering conditions in different of times (0,150&300 h), then wood surface was analyzed for chemical changes using Fourier Transform Infrared (FTIR) spectroscopy and for structural changes using Scanning Electron Microscopy (SEM) .Results showed that weathering process influence by the functional groups on the wood surface. Cycle of weathering (Light and water) caused the damage to the surface polymer structure and chemical and physical changes. The greatest changes caused by the functional groups and Aromatic structure of lignin. The SEM results showed that the surface of wood exposed to weathering undergoes distinct Physical changes. The surface degradation appears to be directly proportional to the time of exposure to the weathering conditions and acetylation of the wood to protect the surface from damages caused by the weathering effect of light and water.
عنوان نشريه :
تحقيقات علوم چوب و كاغذ ايران
عنوان نشريه :
تحقيقات علوم چوب و كاغذ ايران
اطلاعات موجودي :
دوفصلنامه با شماره پیاپی 32 سال 1389
كلمات كليدي :
#تست#آزمون###امتحان