Continuous atom transfer radical polymerization

POLY 102

Tetsuya Noda, noda_te@mrc.co.jp, Corporate Research Laboratories, Mitsubishi Rayon Co., LTD, 20-1 Miyuki-cho, Otake, 739-0693, Japan, Anthony J. Grice, Department of Chemistry, Univeristy of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom, and David M. Haddleton, d.m.haddleton@warwick.ac.uk, Department of Chemistry, University of Warwick, Coventry, CV4 7AL, United Kingdom.
Continuous ATRP of MMA was carried out in a flow tubular reactor with varying flow rate, temperature, and [monomer]/[initiator] ratios. Changing the flow rate directly relates to the reaction time. This process produces polymer continuously with the conversion increasing with decreasing flow rate. The molecular weight (relating to the flow rate) increases linearly with conversion which is also observed when the [monomer]/[initiator] ratio was changed. The effect of altering the reaction temperature was studied and the apparent activation energy of the propagation reaction of MMA in this system was calculated to be ~ 56.9 kJ mol-1, close to the values reported previously. Preparation of diblock copolymers is also reported with varying comonomers and the conversion, and SEC results suggested that this continuous system is an excellent and facile way to have a continuous ATRP process.
 

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