Fig. 5
From: The photoregulation of a mechanochemical polymer scission

Rate of polymer chain scission upon exposure to pulsed ultrasound. a–d Cleavage rate of P1, C1, C2, and C3 before and after irradiation with UV light (313 nm, 1 h). A 2 mg mL–1 polymer solution was sonicated with pulsed ultrasound (10.6 W cm–2) under an atmosphere of argon in an ice water bath. Measurements were performed in triplicate, and the error bars represent a standard deviation