Premium
Synthesis and characterization of copolymer grafted magnetic nanoparticles via surface‐initiated nitroxide‐mediated radical polymerization
Author(s) -
Chen Fang,
Cai Zhengwang,
Huang Yong,
Luo Wenqian,
Chen Jiucun
Publication year - 2013
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.23343
Subject(s) - materials science , copolymer , nitroxide mediated radical polymerization , polymer , polymer chemistry , radical polymerization , maleic anhydride , styrene , polymerization , grafting , chemical engineering , nanoparticle , composite material , nanotechnology , engineering
Abstract “Grafting from” surface‐initiated nitroxide‐mediated radical polymerization (SI‐NMRP) techniques were used to synthesize poly[styrene‐ co ‐(maleic anhydride)] copolymer brushes from the Fe 3 O 4 surfaces. Well‐defined polymer chains were grown from the Fe 3 O 4 surfaces to yield particles with a Fe 3 O 4 core and a polymer outer layer. The observed narrow molecular weight distributions ( M w / M n ), linear kinetic plots and linear plots of molecular weight ( M n ) versus conversion for the free polymer indicated that the chain growth from the Fe 3 O 4 surface was a controlled process by adding an excess of 2,2,6,6‐tetramethylpiperidinyloxy (TEMPO). The modified nanoparticles were subjected to detailed characterization using XRD, TEM, FT‐IR, and TGA. The analyses of vibration sample magnetometer (VSM) verified that the nanoparticles owned good magnetic property. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers