Historically, most of society’s writings and visual images have been recorded on paper.
The strength of paper results from a combination of factors. The most important is the condition of cellulose, in particular chain length. Cellulose is made up of repeating units of glucose monomers and the number of glucose units present provides a measure of degree of polymerization (DP). In native cellulose from wood DP is about 10,000. Depending on the nature of the pulping and bleaching, the DP of processed cellulose falls to a range of 600 – 1100.