Atom transfer radical polymerization of methyl methacrylate using pyridylphosphine as a ligand

POLY 180

Zhigang Xue, zgxue2001@hotmail.com1, Ji Yoon Kim, jykim@ynu.ac.kr1, Seok Kyun Noh, sknoh@ynu.ac.kr1, and Won Seok Lyoo, wslyoo@yu.ac.kr2. (1) School of Display and Chemical Engineering, Yeungnam University, 214-1 Dae-dong, Gyeongsan, Gyeongbuk, 712-749, South Korea, (2) School of Textiles, Yeungnam University, 214-1 Dae-dong, Gyeongsan, Gyeongbuk, 712-749, South Korea
A new catalytic system FeX2/pyridylphosphine (X=Cl, Br ), has been successfully used in the polymerization of methyl methacrylate (MMA). Kinetic studies have been carried out by measuring monomer conversions and polymer molecular weights against polymerization time. Most of the polymerization with the pyridylphosphine ligand were controlled with a linear increase in the number average molecular weights (Mn) vs conversion and relatively low molecular weight distribution (Mw/Mn = 1.2-1.5) throughout the reactions. The experimental weights matched the calculated values. The 2-bromopropionitrile (BPN) initiated ATRP of MMA with FeX2/ pyridylphosphine catalytic system (X = Cl, Br) was found to be controlled in p-xylene at 80°C. The order of controllability of MMA with different initiator systems is FeBr2/BPN > FeCl2/BPN > FeBr2/CPN.
 

General Papers: Functional Materials
6:00 PM-8:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Polymer Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007