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Fig. 2 | Heritage Science

Fig. 2

From: Assessing rheometry for measuring the viscosity-average degree of polymerisation of cellulose in paper degradation studies

Fig. 2

Comparison of DPv of hygrothermally aged Whatman No. 1 paper, obtained from rotational rheometry experiments (solid blue line) and glass capillary viscometry experiments (dashed orange line). a Viscosity-average degree of polymerisation DPv and b number of chain scissions \(S = \left( {1}/ \hbox {DP}_{\textrm{v}} - {1}/ {\hbox {DP}_{\textrm{v0}}} \right)\) as a function of ageing time. The circles represent the average measurement values and the error bars represent the maximum and minimum measurement values of each of the 5 age categories, which are based on respectively 30 and 3 measurements for the rheometry and glass capillary viscometry experiments

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