Journal
MACROMOLECULES
Volume 42, Issue 6, Pages 1867-1872Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma8024909
Keywords
-
Categories
Funding
- Camille and Henry Dreyfus New Faculty Award Program
- Petroleum Research Fund [48399-G7]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0847515] Funding Source: National Science Foundation
Ask authors/readers for more resources
Here we report the kinetics of the surface-initiated atom transfer radical polymerization (ATRP) of styrene from the surface of functionalized montmorillonite clay as a function of graft density. Compared with analogous ATRP reactions with free initiator, we observe a seven-fold increase in the polymerization rate at the highest graft density, similar to 1 chain/nm(2), whereas bulk kinetics are recovered as the graft density is reduced. We hypothesize that this phenomenon is a consequence of local concentration heterogeneities that shift the ATRP equilibrium in favor of the active state and present a simple phenomenological kinetic model that accounts for our data. These findings present an important consideration relevant to the design of precisely defined molecular architectures from Surfaces via surface-initiated ATRP.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available