Temporal Control in Mechanically Controlled Atom Transfer Radical Polymerization Using Low ppm of Cu Catalyst

Zhenhua Wang; Xiangcheng Pan; Jiajun Yan; Sajjad Dadashi-Silab; Guojun Xie; Jianan Zhang; Zhanhua Wang; Hesheng Xia; Krzysztof Matyjaszewski

doi:10.1021/acsmacrolett.7b00152

Temporal Control in Mechanically Controlled Atom Transfer Radical Polymerization Using Low ppm of Cu Catalyst

ACS Macro Lett. 2017 May 16;6(5):546-549. doi: 10.1021/acsmacrolett.7b00152. Epub 2017 Apr 28.

Authors

Zhenhua Wang^{1

2}, Xiangcheng Pan², Jiajun Yan², Sajjad Dadashi-Silab², Guojun Xie², Jianan Zhang², Zhanhua Wang¹, Hesheng Xia¹, Krzysztof Matyjaszewski²

Affiliations

¹ The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China.
² Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States.

PMID: 35610875
DOI: 10.1021/acsmacrolett.7b00152

Abstract

A mechanically controlled atom transfer radical polymerization (mechanoATRP) was successfully carried out in an ultrasound bath with low ppm of copper catalyst. The polymerization of methyl acrylate in the presence of CuBr₂/tris(2-pyridylmethyl)amine catalyst using ultrasound as an external stimulus was temporally controlled by switching on-off ultrasound agitation. The first order kinetics was observed during ultrasonication. The experimental molecular weights agreed well with the theoretical values and displayed narrow molecular weight distribution. The effects of various types of piezoelectric BaTiO₃ nanoparticles, loadings of nanoparticles, and targeted degrees of polymerization were studied.