A Green Platform for Preparation of the Well-Defined Polyacrylonitrile: ⁶⁰Co γ-ray Irradiation-Initiated RAFT Polymerization at Room Temperature.

ABSTRACT: ⁶⁰Co γ-ray irradiation-initiated reversible addition⁻fragmentation chain transfer (RAFT) polymerization at room temperature with 2-cyanoprop-2-yl 1-dithionaphthalate (CPDN) as the chain transfer agent was first applied to acrylonitrile (AN) polymerization, providing a "green" platform for preparing polyacrylonitrile (PAN)-based carbon fibers using an environment-friendly energy source. Various effects of dose rate, molar ratio of the monomer to the chain transfer agent, monomer concentration and reaction time on the AN polymerization behaviors were performed to improve the controllability of molecular the weight and molecular weight distribution of the obtained PAN. The feature of the controlled polymerization was proven by the first-order kinetics, linear increase of the molecu

SUBMITTER: Zhang S 

PROVIDER: S-EPMC6432107 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature