Functional and Thermal Analysis of Suberin Isolated from Birch Bark

Sudakova, Irina G.; Kuznetsov, Boris N.; Garyntseva, Natalia V.; Pavlenko, Nina I.; Ivanchenko, Natalia M.

Functional and Thermal Analysis of Suberin Isolated from Birch Bark

Sudakova, Irina G., Kuznetsov, Boris N., Garyntseva, Natalia V., Pavlenko, Nina I., Ivanchenko, Natalia M.

Дата публикации: 2008-12

Дата публикации в реестре: 2020-03-03T17:13:57Z

Аннотация:

The functional composition and the process of thermal degradation of suberin samples obtained by water-alkaline and alcohol-alkaline hydrolysis of outer birch-bark were studied by IR-spectroscopy, TGA and DTA methods. It was shown that the partial hydrolysis of birch bark occurs in water-alkaline solution, while alcohol-alkaline hydrolysis of bark yields the mixture of suberinic acids. The alcoholalkaline suberin destruction occurs at higher temperatures than that of water-alkaline suberin. The basic weight loss is observed at 340-400 °С and 410-440 °С. At these temperatures the loss of weight is 64 % and 91 % for samples of suberin, obtained by water-alkaline and alcohol-alkaline hydrolysis of outer birch-bark accordingly. It was shown that method of suberin isolation from birch-bark defines the composition, properties and areas of the use of suberinic products.

Ключевые слова:
suberin, birch-bark outerlayer, water-alkaline and alcohol-alkaline hydrolysis, filmforming materials, binding agent

Тип: Journal Article