Dispersion Polymerization of Acrylonitrile Using a Poly(ethylene glycol)-b-Polyacrylonitrile Macro-RAFT Agent

作者：Kim Jin Sook; Jeon Hyun Jeong; Lee Kyung Min; Im Jung Nam; Youk Ji Ho^*

来源：Fibers and Polymers, 2010, 11(2): 153-157.

DOI：10.1007/s12221-010-0153-7

• Dispersion polymerization
• Reversible addition fragmentation chain transfer (RAFT) polymerization
• Macromolecular RAFT agent
• Polyacrylonitrile
• Nanoparticles

Polyacrylonitrile (PAN) nanoparticles were successfully prepared by dispersion polymerization of acrylonitrile (AN) in water using ID and 20 wt% of the poly(ethylene oxide)-b-PAN macromolecular RAFT (PEO-b-PAN macro-RAFT) agent (M(n)=5,600 g/mol, PDI=1.15). The degrees of polymerization of the PEO and PAN blocks were 113 and 16, respectively. The PAN nanoparticles had a crumpled spherical appearance and their sizes ranged from 50-80 um. The degree of crystallinity of the PAN particles was 23 %. The M(n) values of the PAN nanoparticles prepared with 10 and 20 wt% of the PEO-b-PAN macro-RAFT agent were 33,900 and 25,800 g/mol, respectively. The existence of the PEO block on the surface of the PAN nanoparticles was confirmed by (1)H NMR spectroscopy and XPS.

• 出版日期2010-4