Читать книгу A Text-book of Paper-making - C. F. Cross - Страница 27

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—When exposed to the concentrated aqueous acid at ordinary temperatures, ligno-cellulose undergoes a profound structural modification, and is largely converted into soluble bodies. The disintegrated residue reacts with chlorine similarly to the original jute, but the quantity of cellulose isolated by subsequent treatment with alkaline solutions is only 50 per cent. of the original. Since jute cellulose, after isolation, exhibits under similar treatment a much smaller conversion into soluble products, 10 per cent. as compared with 33, we have here further evidence that the cellulose is present in the fibre in a condition chemically different from that of the isolated cellulose.