Cellulose is the most important structural material in nature and the mostabundant of the natural polymers. It is formed by photosynthesis in growingvegetation and has been exploited for many purposes over many thousands ofyears in the forms of wood, paper and cellulosic textiles. Nevertheless, it was notuntil the 1930s that it was proved beyond doubt to be a linear polymer ofanhydroglucose units [1]. It is remarkable that the manufacture of regeneratedcellulosic fibres and the complexities of bleaching, mercerising, dyeing andprinting of natural and regenerated cellulosic textiles were already developed andunderstood, within the limitations imposed by this uncertain knowledge ofcellulose structure.7.1.1
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