Of a cellulose molecule

Cellulose fibers are insoluble in water because the strength of hydrogen bonding of a cellulose molecule in the fiber with surface water molecules is not sufficient to overcome the intermolecular forces that hold it in the fiber. 

Upon treatment with periodate, a 200 mg sample of cellulose released 4.12 p,moles of formic acid, (a) What is the average MW of the cellulose molecules (b) What is the average chain length of a cellulose molecule ... 

The Molitorisz Hayroll winds grass or alfalfa hay into a cigar-like roll which is cut into short lengths, taking advantage of stem orientation to achieve density (l) The roll is similar to the microstructure of a cellulose molecule. But we found it impossible to make in the field with stiff brittle straw. 

The theoretical limits of wood strength are impressive. The strength of a cellulose molecule dwarfs the values associated with high strength steel (Table 10.1). Individual fibres are incredibly strong in tension, but once assembled into solid wood, much of this potential is lost because of weakness across the grain. 

If you examine the structure of a polymer, you can identify the repeating monomers that formed it. Because polymer molecules are large, they are commonly represented by showing just a piece of the chain. The piece shown must include at least one complete repeating unit. Look carefully at the structure of a segment of a cellulose molecule shown in Figure... 

Partial structure of a cellulose molecule showing the /3 linkages of each glucose unit. 

FIGURE 2.3 A segment of a cellulose molecule. These molecules are biosynthesized from glucose with the... 

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