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Effect of nitrogen oxides on aging processes of cellulosic materials. Study of nitrogen oxide atmosphere on aging processes of porous materials on celulose and lignocellulose base
В наличии
Местонахождение: Алматы | Состояние экземпляра: новый |
Бумажная
версия
версия
Автор: Michaela Filipi,Miloslav Milichovsk? and Ond?ej Mikala
ISBN: 9783330326934
Год издания: 2017
Формат книги: 60×90/16 (145×215 мм)
Количество страниц: 80
Издательство: LAP LAMBERT Academic Publishing
Цена: 21983 тг
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Аннотация: Exhibits deposited in museums or depositories, are exposed to surrounding environment, effecting material lifetime. Many factors are concerned, effecting the material degradation. Among the factors which cannot be influenced, there is material composition. Due to continuously rising of nitrogen oxide content in atmosphere, it is inevitable to deal with questions, what are the impacts of this atmosphere on the cellulose materials, new and historical, deposited in archives and book depositories. Mechanism of depolymerization during nitroxide-mediated oxidation of native cellulose is presented that has been studied under various conditions. Lignocellulosic materials containing poly-anhydroglucuronic acid is of very versatile lifetime. During storage of those materials, decaying of PAGA takes place, which is manifested by colour change and by loss of tensile properties.
Ключевые слова: aging, nitrogen oxides, lignocellulose materials