Table 4.
Relative crystallinity of the three wood species after heat treatment

Condition	Royal paulownia	Suwon silver poplar	Korean red pine
Control	53.5±0.1	66.7±4.6	59.3±2.9
160°C	57.9±0.9	64.1±2.6	60.2±3.5
180°C	61.1±0.3	68.4±2.7	58.6±1.2
200°C	59.6±4.0	68.0±0.1	62.2±3.9
220°C	66.5±4.8	68.2±3.9	64.1±1.6