Chemical Structure and Microscopic Morphology Changes of Dyed Wood Holocellulose Exposed to UV Irradiation.

Effect of UV Radiation on the Thermal Stability of Dyed Holocellulose Comparative analysis of the holocellulose, dyed holocellulose, and dyed holocellulose after 100 h of UV aging ( Figure 4 ), the endothermic peak (temperature) of the three samples presented an increasing trend, which was 122.75 °C, 124.30 °C, and 131.24 °C, respectively, but their endothermic capacity (heat flow) shows a decreasing trend.

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With the UV radiation time extension, the relative crystallinity of dyed wood and holocellulose showed a trend of increasing first and then decreasing, but the overall change was not significant.

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