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Polymers 2017, 9(6), 186; doi:10.3390/polym9060186

Combining ATRP and FRP Gels: Soft Gluing of Polymeric Materials for the Fabrication of Stackable Gels

1
Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA
2
Chemical Engineering Department, University of Pittsburgh, Pittsburgh, PA 15261, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Chih-Feng Huang
Received: 7 May 2017 / Revised: 20 May 2017 / Accepted: 20 May 2017 / Published: 24 May 2017
(This article belongs to the Special Issue Functionally Responsive Polymeric Materials)
View Full-Text   |   Download PDF [1690 KB, uploaded 24 May 2017]   |  

Abstract

Stackable gels comprised of layers of dissimilar polymers were synthesized by combining conventional free radical polymerization (FRP) and atom transfer radical polymerization (ATRP) using two approaches: (i) polymerization of a pre-gel solution containing a monomer and cross-linker introduced on top of a previously prepared gel, and (ii) simultaneous polymerization of two immiscible pre-gel solutions remaining in contact. All permutations of FRP and ATRP yielded single-piece, connected, amphiphilic gels regardless of the order of polymerization. Furthermore, multi-layer ATRP gels combining different polymers were synthesized with the FRP layer as a gluing agent. A 10-layer amphiphilic stackable gel combining n-butyl methacrylate (BMA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA), and a 10-layer stackable gel combining BMA, DMAEMA and di(ethylene glycol) methyl ether methacrylate (PEO2MA) were synthesized. This patching method, combining conventional FRP gels with ATRP ones, offers an efficient path to the formation of complex stackable gel architectures. View Full-Text
Keywords: stacked gel; multi-layer gels; ATRP gel; FRP gel stacked gel; multi-layer gels; ATRP gel; FRP gel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Beziau, A.; de Menezes, R.N.L.; Biswas, S.; Singh, A.; Cuthbert, J.; Balazs, A.C.; Kowalewski, T.; Matyjaszewski, K. Combining ATRP and FRP Gels: Soft Gluing of Polymeric Materials for the Fabrication of Stackable Gels. Polymers 2017, 9, 186.

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