Thermally Degradable Poly(<i>n</i>-butyl acrylate) Model Networks Prepared by PhotoATRP and Radical Trap-Assisted Atom Transfer Radical Coupling

oleh: Michael R. Martinez, Ziye Zhuang, Megan Treichel, Julia Cuthbert, Mingkang Sun, Joanna Pietrasik, Krzysztof Matyjaszewski

Format: Article
Diterbitkan: MDPI AG 2022-02-01

Deskripsi

Model poly(<i>n</i>-butyl acrylate) (PBA) networks were prepared by photoinduced atom transfer radical polymerization (photoATRP), followed by curing of polymer stars via atom transfer radical coupling (ATRC) with a nitrosobenzene radical trap. The resulting nitroxyl radical installed thermally labile alkoxyamine functional groups at the junctions of the network. The alkoxyamine crosslinks of the network were degraded back to star-like products upon exposure to temperatures above 135 °C. Characterization of the degraded products via gel permeation chromatography (GPC) confirmed the inversion of polymer topology after thermal treatment.