[PDF] acid treatment cellulose

Sulfuric acid of 72% concentration is commonly used for cellulose treatment since it can readily dissolve cellulose at room temperature [18, 19]. It can be used to produce non-crystalline cellulose [20], nanocrystalline particles (NCP) [21], and also to measure cellulose content in lignocellulosic biomass [22].
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  • Can acid break down cellulose?

    The principle of concentrated acid hydrolysis is that crystalline cellulose can be completely dissolved in 72% sulfuric acid or 42% hydrochloric acid or 77–83% phosphoric acid at a lower temperature, resulting in the homogeneous hydrolysis of cellulose.

  • What does acid hydrolysis do to cellulose?

    When cellulose is hydrolyzed in an acidic medium to glucose, the P-l,4-glucosidic bonds of a cellulose chain molecule are split by the addition of water molecules; this addition yields fragments of shorter chain lengths while preserving the basic structure.

  • What chemicals break down cellulose?

    As a result of the interactions between cellulose and sulfuric acid, the intra and intermolecular hydrogen bonds between hydroxyl groups in cellulose are broken down, leading to the separation of the molecular chains of cellulose (perceived as swelling) and ultimately cellulose dissolution (Figure 4). Figure 4.
  • The results showed that the hydrolysis process of cellulose with nitric acid was more effective than sulfuric acid and hydrochloric acid. Standard cellulose FTIR spectra showed that delignification process was success and cellulose obtained from sugarcane bagasse.
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