1. Statistical analysis of AGET ATRP of MMA in two-step emulsion system Presenter: Kishor N. Up. Regmi Supervisors: Dr. Ramdhane Dhib and Dr. M. Mehrvar Department of Chemical Engineering Ryerson University 38 th IPR Symposium May 4, 2016 1

2. Introduction Single-step emulsion Two-step emulsion Synthetic procedure Fig 1: Reactor set up 2 AGET ATRP:Successful in emulsion high chain end functionality pure block and graft copolymers.

3. 3 Preliminary investigations Reaction mechanism Slow, complex physicochemical system Coagulation issues Two-step emulsion is better than single-step emulsion in terms of livingness (narrow PDI and targeted Mn) Braunecker, Wade A., and Krzysztof Matyjaszewski. "Controlled/living radical polymerization: features, developments, and perspectives." Progress in Polymer Science 32.1 (2007): 93-146. Figure 2: MMA conversion versus time in single-step emulsion polymerizations. Figure 3: MMA conversion versus time in two-step emulsion polymerizations.

4. Fig 6: Dependence of experimental number-average molar mass (M n, g mol -1 ) and polydispersity index (PDI) on MMA conversions in two-step emulsion polymerization (T4) 4

5. Design specification : Five factor two-level fractional factorial experimental design with resolution 5 (2 v 5-1 ) having 5 center points -Screening design. -Investigates main effects and interaction effects. -Detects quadratic effect but not estimates them effectively. -Can be augmented to CCD. Independent variable Level and range of independent variable Actual Variable Coded variable01 Temp ( o C)X1505560 Brij 98 (g)X215.000016.500018.0000 Ascorbic Acid (g)X30.06000.06600.0720 EBiB (g)X40.39870.44860.4984 CuBr 2 /dNBpy (g/g)X5 0.0838/ 0.3065 0.0922/ 0.3372 0.1006/ 0.3678 5 Statistical analysis on two-step emulsion AGET ATRP of MMA Analysis of Variance

6. Acknowledgements Dr. R. Dhib and Dr. M. Mehrvar NSERC Department of Chemical Engineering, Ryerson University 6