Journal
ACS MACRO LETTERS
Volume 2, Issue 1, Pages 23-26Publisher
AMER CHEMICAL SOC
DOI: 10.1021/mz300614m
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Funding
- NSF [DMR 09-69301, DMR 11-22483]
- CRP Consortium at Carnegie Mellon University
- WCU (World Class University) through Korea Science and Engineering Foundation
- Ministry of Education, Science and Technology [R33-10035-0]
- Astrid and Bruce McWilliams Fellowship
- DAAD
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We report a new strategy for the synthesis of stable and well-defined supersoft elastomers. First, four-arm star-like polymers, poly-(trimethylsilyloxyethyl acrylate), were synthesized and cross-linked to form a relatively uniform polymer gel network Second, short poly(n-butyl acrylate) side chains were grown from the initiating sites along the network backbone via atom transfer radical polymerization. These soft side chains act as low molecular weight diluent that swells the cross-linked polyHEA network, but cannot be leached from it. Using this strategy, materials with shear modulus less than 5 kPa were prepared and the effect of grafted side chain fraction on their mechanical properties was explored.
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