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Model substances of cellulose

New Catalysis Systems for Hydrolysis of Model Substances of Cellulose... [Pg.168]

The earlier results from pyrolysis of cellulose, oxicellulose and xylan together with the new results from gasification of these substances and all results from experiments with organic model compounds confirm the previously suggested mechanism (ion exchange with carboxylic acid). [Pg.1243]

The sorption isotherm for many substances in polymers in the glassy state, as well as water in cellulose, can be described by two processes that are independent of one another (dual sorption model) ... [Pg.270]

The fringed micelle picture is not particularly suitable for describing synthetic polymers crystallized from solution or melt. However, the fibrils of many natural substances, such as cellulose and proteins (collagen, silk), consist of bundles of macromolecules in a parallel alignment, compatible with the fringed micelle model. For synthetic polymers, however, it is more often found that they crystallize such that the macromolecules fold with an essentially constant length, leading to a lamellar-type crystallite structure (switchboard-model. Fig. 1.11). [Pg.24]

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Cellulose substances

Celluloses model

Model Substances

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