Figure 6

SEM images of 18th-century French violin spruce pretreated with 7.5% BMP-DCA and observed at different temperature (a) 60, (b) 90 and (c) 120 °C.

SEM images of 18th-century French violin spruce pretreated with 7.5% BMP-DCA and observed at different temperature (a) 60, (b) 90 and (c) 120 °C.