جستجوی مقالات مرتبط با کلیدواژه « حفاظت و مرمت » در نشریات گروه « کتابداری و مدیریت اطلاعات »

The application of materials with lasting and durability physical properties is one of the main criteria for preservation of paper works. In this study we examined physical/thermal function of NFC and BCN cellulose nanofibers into the polymer matrix of Klucel-G, as a modified polymeric material in terms of Glass Transition temperature (Tg), for restoration of paper documents.

Firstly, the Nano-cellulose suspensions by solution casting method with Hydro-solvents in Klucel-G matrix with %2 contents (%Wt) were prepared. Then, films were made by air drying method. Finally, the Tg temperature behavior of these solid samples was studied by Differential Scanning Calorimetry/DSC method. Findings and

Thermal behavior of nanocomposite films containing NFC+Klucel and BCN+Klucel improved compared to the pure Klucel samples (no Nano-additive) due to the increasing glass transition temperature (Tg). This was much higher with BCN than to NFC. The inhibition behavior of NFC and BCN nanofibers composites against aging resulted from the aging conditions, increased significantly compared to pure Klucel sample. On the other hand, this behavior faced with increase for BCN films compared to the NFCs. Findings also showed that NFC nanofibers tend to create significantly higher Tg inhibition during a longer aging interval.